Some standard content:
Industry Standard of the People's Republic of China
HG/T 20566-94
Design regulations for rotary kiln1994 --- 11 -- 28
1995-03-01
Ministry of Chemical Industry of the People's Republic of China
'Implementation
Ministry of Chemical Industry Document
Chemical Construction Development (1994) No. 809
Notice on Issuing Two Chemical Industry Standards, namely "Design Regulations for Chemical Rotary Kiln"
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To all provinces, autonomous regions, municipalities directly under the Central Government, cities with independent planning status, Construction Commissions (Construction Departments), Chemical Industry Departments (Bureaus, Companies), and all relevant design units:
The two standards, namely "Design Regulations for Chemical Rotary Kiln" and "Technical Conditions for Hot Oil Furnaces", formulated by the Ministry's Industrial Furnace Design Technology Center, have been reviewed and approved as recommended chemical industry standards, with numbers HG/T20566-94 and HG/T2056794 respectively. They will be implemented from March 1, 1995. The two standards are managed by the Ministry's Industrial Furnace Design Technology Center and published by the Ministry's Engineering Construction Standards Editing Center. Ministry of Chemical Industry
November 28, 1994
1. General
2.1 Cylinder structure
2.2 Simplified calculation
Roller structure
3.2 Roller design calculation
4 Support device design calculation
4.1 Support roller arrangement and force analysis
4.2 Support roller design calculation
4.3 Gear wheel design calculation
5 Support device
7: Transmission device
7.1 Basic requirements and Power calculation
7.2 Selection and design of main components
8 Kiln head, kiln tail and sealing device
Kiln head cover
8.2 Kiln tail cover
8.3 Sealing device
9 Heat balance and thermal efficiency calculation
-9.1. Heat balance calculation
9.2 Kiln thermal efficiency calculation
(3)
Appendix A Rotary case design calculation (I) (supplement) Appendix B Rotary kiln design calculation (I supplement) Preparation instructions
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1.0.1 Subject content
１ General
This regulation covers the structure, calculation and design of chemical rotary kiln. The chemical rotary kiln in this regulation mainly includes the cylinder, kiln head, kiln tail, supporting device (including roller, support wheel and retaining wheel), transmission device and combustion device, etc. 1.0.2 Scope of application
This regulation applies to chemical rotary kilns and rotary drum equipment with a working pressure of slightly negative pressure or normal pressure.
Chemical rotary kilns and rotary drum equipment can be used in calcination, incineration, reduction, drying, cooling and other process.
1.0.3 Reference standards
In addition to complying with this regulation, the design of chemical rotary kilns shall also comply with the provisions of the relevant current national standards (latest version).
GBJ 211
GB10095
GB 5676
JB4385
GB5014
GB4323
GB 5272
.GB2496
《Industrial furnace masonry engineering construction and acceptance specifications》《Involute cylindrical gear accuracy》
《Casting carbon steel for general engineering》
《General technical conditions for free forgings on hammers》bZxz.net
《Elastic pin coupling》
《Elastic sleeve pin coupling》
《Plum blossom elastic coupling》
《High elastic rubber coupling》
HG21546.1《Types and technical conditions of rotary cylinder support wheels and retaining wheels》HG215 46.2《Supporting wheel for rotary drum》
HG21546.3《Blocking wheel for rotary drum》
HG21546.4《Type and technical conditions of sealing device for inlet and outlet box of rotary drum》iikAoNnikAca
HG21546.5《MG type and technical conditions of sealing device for inlet and outlet box of rotary drum》
HG21546.6《JC type and technical conditions of sealing device for inlet and outlet box of rotary drum》
2 Drum
The drum is the base of rotary kiln. In addition to complying with these regulations, the design of the drum shall also meet the requirements of rotary kiln design documents.
Basic parameters of cylinder
Cylinder structure
2.1.1.1 Residence time of materials in the cylinder The residence time of materials in the cylinder is related to factors such as cylinder length, inner diameter rotation speed, horizontal inclination, structure (with or without lifting plate) and natural inclination of materials, and can be calculated using formulas 2.1.1.1-1 and 2.1.1.1-2.
In the formula:
In the formula:
Material residence time without copying plate in the cylinder t
L(6+24)
324Din·sina
t----Material residence time, min;
L————Cylinder length, m,
D:—-Cylinder inner diameter, m;
9--Natural inclination angle of material, degrees;
α-Cylinder water level inclination angle, degrees;
-Speed, r/min.
Material residence time with lift plate in the cylinder
tz=m*k
D,.nsinα
t2--Material residence time,min;
Coefficient, selected from Table 2.1.1.1;
Di, n, α have the same meaning as in Formula 2.1.1.1-1. (2. 1. 1 I-1)
(2. 1.1. 1--2)
Lifting type
Fan type
Distributed
Note: p is material density, kg/m3.
2.1.1.2 Filling coefficient
Coefficient m, K
p≤1200kg/m3
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Table 2.1.1.1
p>1200kg/m2
On the internal cross section of the cylinder with vertical auxiliary line, the ratio of the area occupied by the material to the internal cross section of the cylinder is the filling coefficient. Generally, the filling coefficient is 0.1~0.2, not exceeding 0.25. If the processing capacity has been determined, the filling coefficient can also be calculated using Formula 2.1.1.2. If the calculated filling coefficient is too low or too high, the cylinder size can be appropriately adjusted and recalculated. f_2.12×10-2Xk:·G. t
·L·D
In the formula:
f—filling coefficient;
! Structural influence coefficient
(2.1.1.2)
When there are no baffle plates, copy plates and other accessories in the cylinder, take k1=1.0; when there are baffle plates and copy plates in the cylinder, take k1=1.1~1.2; when there are baffle plates and copy plates in the cylinder, and there are other accessories (such as heat exchanger devices, etc.), take k1=1.30~～1.45-processing capacity, kg/h;
p-material density, kg/m;
L-cylinder length, m
D-cylinder inner diameter, m
-material residence time, min.
2.1.1.3 Inclination angle of cylinder
The angle between the axis of the cylinder and the horizontal plane is the inclination angle. The size of the inclination angle is determined by the length of the cylinder and the residence time of the material. It is generally 1.5~~3.0°, and can also be appropriately increased. Generally, it does not exceed 6°
2.1.1.4 Speed
The speed range of the cylinder is 0.4~10r/min, and the commonly used speed is 1~3r/min. When designing the speed, the circumferential speed of the outer diameter of the cylinder should be controlled not to exceed 1m/s. 2.1.2 Determination of the number of support gears
The number of support gears can be determined according to the ratio of the inner diameter of the cylinder and the length of the cylinder to the inner diameter, see Table 2.1.2.
Number of support gears
D≤3m
13m
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