HG/T 20642-1998 Technical regulations for design of refractory fiber linings for chemical industrial furnaces
Some standard content:
Industry Standard of the People's Republic of China
Chemical Industry Furnace Refractory Fiber
Design Technology
IG/T 20542--37
: State Administration of Medicine Shanghai Pharmaceutical Design Editing Unit:
Approving Department:
Implementation Period
Engineering Construction Standard Editing Center of the Ministry of Chemical Industry
1. Basis for Revising the Standard
This standard is based on the "Notice on Issuing the 1996 Design Basic Work Plan" issued by the Ministry of Chemical Industry, and is based on the original CD132A20-87 "Chemical Industry Furnace Refractory Fiber Insulation Technology Regulations (Trial)" (hereinafter referred to as the "original standard") issued in December 2011. In recent years, my country's third-generation Shangling production and research based on ordinary tin silicate fiber has developed rapidly, and refractory fiber has been made by Low-end products have developed into mid-to-high-end products, and many manufacturers have been built. In particular, the quality of products from various factories is not uniform. As an important criterion for design technology, the original standard needs to be supplemented and improved. Therefore, we have revised and supplemented the original standard. Main technical content of the standard
This technical regulation is a design technical regulation for refractory fiber linings of general chemical industrial furnaces with a furnace temperature not exceeding 1300°C. This technical regulation also puts forward seven corresponding technical requirements for auxiliary materials such as refractory fiber furnace structures.
Changes in the content of the revised standard
This revision mainly revised the refractory fiber lining materials, refractory fiber lining design principles and refractory fiber linings in the original standard. Some clauses have been added to the commonly used structures of furnace linings, and they have been newly arranged to make this technical regulation more universal and practical. In terms of refractory fiber furnace lining materials, the content of medium and high-end refractory fibers and their secondary products has been added. At the same time, the design technical requirements for refractory fiber furnace lining anchors have been added accordingly, and some technical requirements for refractory fiber furnace lining surface coatings have been added. In the design principles of refractory fiber furnace linings, the allowable use temperature of refractory lining materials and additives is emphasized.
In the commonly used structures of refractory fiber furnace linings, the content of foldable refractory structures, amorphous refractory fiber furnace linings and composite structure furnace linings has been added. The authorized responsible unit for the interpretation and photography of this standard is: Shanghai Pharmaceutical Design Institute, Shanghai Municipal Administration of Medical Sciences Address: No. 855, Nanjing West Road, Shanghai
Postal Code: 20004G
Main Editor and Main Editor of the Standard: Shanghai Pharmaceutical Design Institute, State Pharmaceutical Administration Main Drafters: Chen Dexiang
Wang Zuzhen
Qian Fengxue
To facilitate the design personnel in chemical industry, refractory research and development, so as to ensure the design accuracy and compliance, and to invite continuous development and improvement, this regulation is specially formulated. 1.0.2 This technical regulation is applicable to the design of refractory fiber linings for industrial furnaces with a temperature of not more than 13,300 yuan. The design of water-resistant fiber linings for chemical industrial furnaces should take into account the requirements of 1 and 0.3.
The structural design of the refractory fiber furnace village must be based on the premise of 1.0.4
heat loss and the use temperature of the cooked
surface, and at the same time take into account the convenience of construction safety.
1.0.5 In addition to complying with this technical specification, the design of the refractory fiber lining of the chemical industrial furnace shall also comply with the provisions of the relevant mandatory standards currently in force in the country. The main ones are: "Code for Construction and Acceptance of Inkstone Construction Project" (GBJ211), "Cloud Road Foundation Drum Pot Fire Fiber Model" (GB3003), Chemical Industrial Furnace Structure Design Regulations (HG20541). 1-0.6 Related standards
G 3U03
GBJ 211
GB/T 983
GB/T 5117
GE/T 16400
HGJ 41
HG20541
HG 20543
《Ordinary Lead Silicate Products》
《Industrial Furnace Masonry Engineering Construction and Acceptance Specifications》《Stainless Steel Welding Rods》
《Carbon Steel Welding Rods》
《Aluminum Silicate Wool and Its Products for Insulation》
《Materials Selection Regulations for Steel Chemical Containers》
《Design and Selection Regulations for Refractory and Insulation Materials for Chemical Industry》
《Design and Selection Regulations for Metal Materials for Chemical Industry》
《Structural Design Regulations for Chemical Industrial Furnaces》
《Technical Conditions for Construction of Chemical Industrial Furnaces》
HG20544
HG/T 20525
"Technical Signature for Installation of Chemical Industry Efficiency Structures" "Design Regulations for Heat Transfer Meter Screens of Tubular Furnaces in Chemical Industry" Refractory Fiber Lining Materials and Sheath Auxiliary Materials Warning
Acid Fire Shusi
Classification by refractory fiber type and use temperature See Table 2.1.1.2.1.1
Types of refractory fibers can be used deep!
Table 2. 1. 1
Labor capital micro health
Low humidity fiber
A1.0.38%~42%
Suitable acid scale fiber
High purity magnetic aluminum wire
High-purity fiber
Al:0,52%~553
Zr-containing aluminum silicate fiber
The classification of refractory fiber in form is shown in Table 2.1.2. 2.1.2
Shape or type
Fiber blanket
Fiber felt
Fiber paper
Fiber fly
Fiber Cloth
Shuwei hard board
Fiber castable
Fiber spray coating,
number 2, 12
and the fire-resistant fiber form is divided into English
(1) used for the molding or production of other large-scale energy products, new chaos, plain, paper, vacuum porcelain or molded, split products, etc.
2) as a ballast in different high-pressure occasions, effective solution, subject to: avoid, material protection
(1) in the high-pressure occasions between the source of flow in the pipe (2) standard for the protection of the internal fermentation fire insulation tree diagram, reading department: the school of science and technology It can be used as a backing material for various furnace linings, etc. (1) as a protective material
(2) as a backing material for composite furnace agents (3) as a filler for furnace lining gaps (1) thermal insulation and resistance materials
(2) high temperature sealing gaskets and electrical insulation
(1) as a filler in different high-mix occasions, such as; expansion joints (2) commercial tide sealing fillers
(3) high temperature bundling materials
(t) heat limiting and insulation materials
(2) high temperature flexible sealing structural materials or sealing gaskets [3) as resistance High-mixed wrapping materials can be used as furnace lining materials, made into fire hole bricks, bricks and pipe sleeves as furnace lining materials, and can be made into fire hole bricks and protective linings for pouring fire mice or two heat layers, local repair of furnace village, fire insulation materials for doors or fire doors, etc. They can be used in places with high airflow impact. At present, they are mostly used as the heat layer of furnace village. In places with small airflow impact, they are used as refractory lining materials on the fire-facing surface. The quality of fiber products with an allowable use temperature of no more than 950℃ shall comply with the provisions of "2.1.3" and "Aluminum silicate refractory fiber felt" (GB 3003) and "Lead silicate wool and its products for insulation" (GB/T16400). The high-efficiency insulation materials with an allowable use temperature of no more than 1100℃ shall meet the following requirements. From Table 2.1.4-1 and Table 2.1.4-28%. Commercial silicon refractory products
Good quality
Ale+So
Commercial pure aluminum refractory solutions
Table 2. 1. 4- 2
Bulk density (kg/n\)
The maximum content of the whole ball (>0.25mmz)
Heating shrinkage
Fiber diameter (μm)
96,128.16G
12000-243,493
2, ~-4
The measurement of high fire resistance products with humidity not exceeding 12000 should meet the following requirements, as shown in Table 2.1.5-1 and Table 2.1.3-2. Table 2.1.5-1
Material content
Al,0,+ SiO2
K,o+Nat0
Today ()
52~-55
Physical properties of high-aluminum reinforced fiber products
Table 2.1.5-2
Volume density (kg/m\)
Nozzle content (>0.25mm)
Heating line shrinkage
Fiber diameter (m)
96.128,160
14c00.24h4%
The quality of aluminum-containing refractory fiber products with an allowable use temperature not exceeding 1300℃2.1.6
shall meet the following requirements, see Table 2.1.6-1 and Table 2.1.6-2. Chemical composition of aluminum-containing refractory fiber products
Table 2.1.6-1
Chemical composition
Al0,+S102+2r0
Ha ()
15~-19
Physical properties of aluminum-containing refractory fiber products
Table 2.1. 6-2
Volume density (ing/mi)
Slag ball content (>1.25mm)
Heating line shrinkage
Fiber true diameter (um)
98,328.160
1100.24h.≤45
2.1.7 Classification of refractory fiber castings According to the specific type of commercial performance, the product volume density is 400~800kg/m, the product pressure resistance is greater than 0.5MPa, and the high temperature line shrinkage is lower than the value of the same grade of fiber. 40
The chemical composition of raw cotton for kitchen fire fiber castings shall comply with the standard provisions of GB/T16400 and the requirements of Table 2.1.4-1, Table 2.1.5~1.22.1.6-1 of this standard. Moreover, the fire resistance of the raw material used for refractory fiber injection materials shall be better than the fire resistance of the corresponding raw material used for refractory fiber injection materials, and shall not damage the performance of the fiber source.
The chemical composition of the raw material used for refractory fiber spray coatings shall be in accordance with the standard provisions of GB/T16400 and the requirements of Table 2.1.-1, 2..5~1.22.1.6-1 of this standard.
2.? The chemical composition of the raw material used for refractory fiber spray coatings shall be determined by the actual measured values of different chemical properties of various refractory fiber products.
2.2 Pins
The selection of materials for pins should be determined based on the location of the anchor and whether it is in direct contact with the flue gas. You can refer to the "Design and Use Regulations for Metal Materials of Chemical Industrial Furnaces" (HGJ41) or select according to the provisions of 2.2.1 of this standard. 2.2.2 For furnaces using sulfur-containing fuels, in order to prevent sulfuric acid corrosion after condensation of sulfuric acid, the pins (especially the roots) must be coated with a resistant test material. 2.2.3 The installation of pins must comply with the relevant requirements of the "Technical Requirements for Safety of Chemical Industrial Furnaces" (HG 20544).
The iron rust and stains on the steel surface must be removed before welding the pins to the furnace shell steel plate. When welding the pins to the furnace shell steel plate, the oxygen content must be guaranteed according to the requirements of the drawings. 2.2. 4
Seam speed, usually use "L\ type staggered back with folded edge, the welding seam length is equal to the new length, and the round pot without folded edge should be fully welded. The welding electrode should be selected according to the anchor material according to ≤sulfonated steel welding rod" (GB/T2.2. 5
5117). "Stainless steel welding rod" (GB/T983), "Steel chemical container inspection edge piece photography room" (HGJ15):
Material brand
Firmware material selection table
Root gas direct contact condition
Permitted use temperature
Q—235A(B).10,20
1Cr18Ni9
Cr25Ni12,Cr 25Ni20
Cr25Ni35
INCONEL601
Non-metal refractory materials
Sole stone, oxide saw,
Other silicon, silicon nitride bonded
Edible silicon oxide, etc.
>1150~1500
Smoke direct contact point
The surface of the fiber lining used for the direct fire surface is coated with refractory protective coating to protect the fiber material and improve the ability of the lining to resist airflow scouring. 2.3.2 The protective coating used on the surface of the refractory fiber should be able to ensure high temperature resistance, scouring resistance, corrosion resistance, and thermal shock resistance.
The selected refractory fiber surface protection coating should have good adhesion with the refractory system and the same adhesion as the refractory fiber, but it should not produce cracks and should not be corrosive to the acid refractory fiber lining.
2.3.4 For high temperature, radiation heat transfer-based heating furnaces, the fiber surface protection coating should use high-radiation coating with high blackness to enhance the heat transfer in the furnace. The radiation performance of this coating must be long-term and not easy to decay. The coating is applied by spraying or brushing, and the spraying method is preferred. 2.3.5
The brand and related properties of the refractory material shall be determined based on the experience of the production team and the coating manufacturer, and must be adapted to the furnace temperature of the refractory furnace lining material used.
The adhesive used for bonding fibers should have both the characteristics of a moderate product and a detachable fiber veneer. It can be made of adhesives prepared with phosphate, solvent, total class 2.4. 2
and glue as a blending liquid. 2.4.3 For water glass adhesives, regardless of the use temperature, they cannot be used on acidic refractory materials.
2..4 Phosphate adhesives should use aluminum phosphate as the emulsion and high dihydrogen phosphate as the emulsion.
Fiber shrinkage adhesives used at high temperatures can use the general color flag rate 42. 4.5
Refractory fiber furnace lining design principle
Refractory fiber furnace sealing shall not be directly used for high-pressure airflow shock. 3.0.1
3.0.2 For refractory fiber linings directly used on the hot surface, protective coatings can be sprayed on the surface of the fiber seams according to the working conditions.
3.0.3 In slightly oxidized industrial furnaces, the allowable use temperatures of ordinary aluminum silicate refractory fiber products, high-purity refractory fiber products, high-aluminum refractory fiber products and refractory fiber products containing aluminum should be considered. See Table 2.1.1 of this standard. The influence of the ambient atmosphere on the use temperature. In an oxidizing atmosphere, the use temperature of the refractory fiber is 10-200℃ lower than the classification temperature: in a reducing atmosphere, the use temperature of the refractory fiber is 200~250℃ lower than the classification temperature: in a vacuum atmosphere, the use temperature of the refractory fiber is 400~450℃ lower than the classification temperature. It must be noted that the use temperature of the refractory fiber is different under the same material, structure and different fuel conditions.
3.0.4 For the situation where sulfur-containing furnace gas is between the lining layer and the furnace shell, the inner surface of the furnace bright steel should be coated with corrosion-resistant coating.
For the situation where the furnace gas contains corrosiveness and the furnace gas easily penetrates the fiber layer: 3.0.5
Between the furnace layer and the furnace shell, a baffle or metal diaphragm to prevent gas leakage should be set. 3.0. 6
In order to reduce the cost of the furnace, it is advisable to reasonably and effectively use refractory fibers. Other cheap insulation materials can also be used in the low-temperature parts of the furnace. 3. 0. 7
For porous non-expansion refractory fiber linings, the stress caused by thermal expansion of the furnace should not be considered in the design of steel shrinkage. The thickness of the furnace lining must be calculated and determined according to the temperature of the hot and cold surfaces and the thermal physical properties of the furnace lining materials, and in accordance with the "Design and Selection of Refractory and Heat Insulation Materials for Chemical Industrial Furnaces (HGJ40)" and "Design and Calculation of Heat Transfer for Tubular Furnaces in Chemical Industry" (HG/T20525). The variation of the thermal conductivity of refractory fibers in various atmospheres must be considered. 3.0.9 For the structures of different fiber furnaces, there are different requirements for each household during design. The relevant design principles should comply with the provisions of Chapter 1 of this standard. 5.0.8 Commonly used refractory fiber furnace lining reduction structure Layered refractory fiber lining Layered refractory fiber lining should be designed according to the thickness of the furnace: 4.1 1 Use fiber products of different materials to reduce construction costs. 4.1.2. The layered refractory fiber furnace lining can be made of slag wool, rock sugar and aluminum silicate refractory fiber after heat treatment as the insulation layer, and refractory fiber products as the refractory surface. Each layer of products can use heat-resistant steel anchors to reduce the weight of the total layered refractory fiber lining. It is advisable to use large-sized coniferous refractory fibers or large-sized blankets as layers to reduce the number of joints. The layered refractory fiber lining should be made of heat-resistant steel anchors corresponding to the furnace temperature. The commonly used heat-resistant steel anchors shall be used in accordance with the provisions of Section 2.2 of this standard. The type of metal anchors used in the layered refractory fiber furnace is shown in Figure 4.1.54.1.5
Among them, the ceramic cup can be used for the occasions with higher furnace temperature and thicker lining layer (as shown in 1 to 3).
, the L cup should be evenly filled with refractory fiber to protect the anchor nails, and sealed with a cap; the gland nut structure should use a ceramic nut, but a gold pad can be used for lower temperature; when using a rotating card pressure blue structure, the temperature should not be too high. fe
(a) Rotating card Nanxi structure
Gate 4.1.5 1
Ceramic support: 2—backing;
Car: 4—fire blanket
Quick cover clip, 6~—free from theft.
(a) Nut (ceramic nut) circle structure "Figure 4. 1. 5 - 2
1..·Topic mother 12 quick soul refreshing son;
inter-fire fiber blanket;4-paving lamp:
48:7F 7-
commercial resources ring network company
androgen blood: 4.
5 sexual heat 8 public
(h nut porcelain explosion mother) fixed structure
pressure vibration sea state fixed
exhaustion that is 12——-fast English? !
a pair of fire fiber pile I 14—5 machine number!
can nail +6—
a pad doctor.
(Daily) Turn card quality fixed
《5) Turn card
Figure 4.1.5-3 Turn card cover fixed type
Quick clamp, 2-
Refractory fiber blanket,
·Anchor nail; 4--Pressure card width.
The spacing of anchor nails for layered refractory fiber lining should be no more than 300mmtm when used on the furnace wall; the center distance on the furnace top should be no more than 2752mm: the distance between the anchor nail and the edge of the refractory fiber product should be no more than 75mm; generally 50mm is used. For details of the arrangement of the anchor nails, see Figure 4.1.6.
250250250259
100100
30030075
300300300
(a) 53mm fiber blanket overlap
Town Trade
50 250 250250259254
Research Hall A
275 275 275 375 275
(c) 1200mm wide fiber blanket overlap furnace top anchor nail arrangement layer laying fiber blanket nail arrangement diagram
4. 1. 6
2301230133075
To avoid through seams in the furnace lining due to fiber shrinkage, the fiber products on both sides of the joint should adopt an overlap structure. The finger joint length should be 100mm. The overlap direction should be in the direction of air flow and not in the opposite direction, see Figure 4.1.7.
Layered fiber furnace lining should be laid with staggered layers, and the distance between each layer should be more than 100mm.
Fiber furnace village joint overlap structure
Figure 4.1.7
Veneer fiber furnace wall corners should be rounded, and the connection structure is shown in Figure 1
Veneer fiber furnace wall corner rounded connection structure is shown in Figure 4.1.8
4.1.9 Fireproof fiber filler and other fireproof protective seals. 2: Through seams to prevent refractory fiber products from shrinking and seam expansion, and to prevent the structure from being lost. See Figure 4.1.9-1-~4, 50
Fiber furnace is urgent!
Figure 4.1.9--
Fiber furnace wall potential angle reduction structure
Figure 4.1.9-2
A heat limiting layer: 3-heat limiting layer,Www.bzxZ.net
+--refractory fiber: 2
4.1.9-3Fiber furnace seal and brick body connection [-heat layer 2--refractory fiber line 3
Brick wall
4.1.9-4Fiber furnace lining and refractory filling material connection structure [· refractory fiber 2-
Refractory filling material:
Inlaid (folding) modular structure furnace village
Stacked (folding) modular structure furnace village should be refractory fiber blanket according to the fixed 4. 2. 1
width folded into an accordion-shaped module, and then the fiber folded block is pre-compressed to a certain extent. It must be bundled in a compressed state, and the anchors are embedded to form an assembly, and then connected and fixed with the metal anchors welded on the furnace shell steel plate in various forms, as shown in Section 4.2.1-1~3. The thickness of the folded module depends on the insulation requirements, and the provisions of Section 3.0.8 of this 3 are determined by calculation.
The center hole is installed according to Section 4.2. 1-1
Block 43---Surface fire fiber products
——Staggered lip parts,
Precision piercing structure
Figure 4. 2. 1-2
Module: 3--Fiber delivery,
1--Anchor: 2-9-3 Connection between fiber furnace seal and brick body [- heat shield layer 2- refractory fiber line 3
brick body
enclosure 4.1.9-4 Connection structure between fiber furnace lining and refractory filling material [· refractory fiber · 2-
refractory filling material:
folding type (folding type) modular structure furnace village
stacking type (folding type) modular structure furnace village should be folding the refractory fiber blanket into an accordion-shaped module according to the specified width of 4.2.1
, and then pre-compressing the fiber folded block to a certain amount. It must be bundled in a compressed state, and at the same time, the anchors are embedded to form an assembly, and then connected and fixed with the metal anchors welded on the steel plate of the furnace shell in various forms, as shown in 4.2.1-1~3. The thickness of the folding module depends on the insulation requirements, and the provisions of 3.0.8 of this 3 are determined by calculation.
Center hole installation is full of public
According to 4.2.1-1
Block 43---Surface fire fiber
——Staggered lip parts,
Precision piercing type report solution
Figure 4.2.1-2
Module: 3-—Fire fiber delivery,
1--Anchor: 2-9-3 Connection between fiber furnace seal and brick body [- heat shield layer 2- refractory fiber line 3
brick body
enclosure 4.1.9-4 Connection structure between fiber furnace lining and refractory filling material [· refractory fiber · 2-
refractory filling material:
folding type (folding type) modular structure furnace village
stacking type (folding type) modular structure furnace village should be folding the refractory fiber blanket into an accordion-shaped module according to the specified width of 4.2.1
, and then pre-compressing the fiber folded block to a certain amount. It must be bundled in a compressed state, and at the same time, the anchors are embedded to form an assembly, and then connected and fixed with the metal anchors welded on the steel plate of the furnace shell in various forms, as shown in 4.2.1-1~3. The thickness of the folding module depends on the insulation requirements, and the provisions of 3.0.8 of this 3 are determined by calculation.
Center hole installation is full of public
According to 4.2.1-1
Block 43---Surface fire fiber
——Staggered lip parts,
Precision piercing type report solution
Figure 4.2.1-2
Module: 3-—Fire fiber delivery,
1--Anchor: 2-
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