Some standard content:
Chemical Industry Standard of the People's Republic of China
Special Ion Exchange Resin for Three-layer Mixed Bed
1 Subject Content and Scope of Application
HG/T 2623—94
This standard specifies the technical requirements, test methods, inspection rules and requirements for marking, packaging, transportation and storage of special ion exchange resins for three-layer mixed beds.
This standard applies to the following three special resins that make up the three-layer mixed bed: D001-TR macroporous strongly acidic styrene-based cation exchange resin D201-TR macroporous strongly basic styrene-based anion exchange resin S-TR special styrene resin for the two-layer mixed bed
2 Reference standards
GB/T 1631
Classification, naming and model of ion exchange resins Sampling method of ion exchange resins
GB/T 5475
GB/T 5476
Pretreatment method of ion exchange resins
GB/T 5757
GB/T 5758
GB/T 8144
GB/T 8330
GB/I 8331
GB/T 11992
GB/T12598
Determination method of water content of ion exchange resin
Determination method of particle size distribution of ion exchange resinDetermination method of exchange capacity of cation exchange resinDetermination method of wet true density of ion exchange resinDetermination method of apparent density of ion exchange resin potDetermination method of exchange capacity of chlorine-type strong alkaline anion exchange resinDetermination method of strength of ion exchange resin grinding method3 Product models and main uses
Three-layer mixed bed special resin includes two kinds of ion exchange resins D001-TR and D201-TR. They are named according to the provisions of GB/T1631 and the characteristics of their uses. S-TR inert resin is named according to its use and characteristics, where S stands for inert and TR stands for three-layer mixed bed. This series of products is mainly used to prepare three-layer mixed bed special resin for use in pure water preparation and condensate refining. 4 Technical requirements
4.1 Appearance
T>001-TR Brown to brown opaque spherical particles. T>201-TR is milky white to light yellow opaque spherical particles. S-TR can be distinguished from other colored spherical particles of D001-TR and D201-TR. 4.2 Factory type
D001-TR sodium type.
D201 TR chlorine type.
4.3 Physical and chemical properties
Approved by the Ministry of Chemical Industry of the People's Republic of China on April 13, 1994 324
Implementation on January 1, 1995
HG/T 2623—94
The physical and chemical properties should meet the technical indicators specified in the table. Three-layer mixed bed resin physical and chemical performance indicators
Indicator name
Water content, %
Mass total exchange capacity, mmal/g
Volume total exchange capacity, mmol/ml
Gross density-g/mL
Wet true density, g/ml
Particle size, % (particle size, mm)
Ball penetration rate, no
5 Test method
5.1 Appearance
Visual inspection.
5.2 Sample pretreatment
Superior product
DOU1-TR
Qualified product
1. 20~1. 28
295(0. 71-1. 25)
1(-0. 71)
Superior product
201-TR
Qualified product
0.65~0.75
1.06~~1.09
95(0.45~~0.90)
1(. 90)
Pretreatment shall be carried out by the method specified in GB/T 5476. S-TR inert resin does not need to be treated. 5.3 Determination of water content
The film method specified in GB/T5757 is used for determination. 5.4 Determination of mass total exchange capacity and volume total exchange capacity5.4.1 Determination of mass total exchange capacity
D001-TR is determined by the method specified in GB/T8144. D201-TR is determined by the method specified in GB/T11992. 5.4.2 Calculation of volume total exchange capacity
The volume total exchange capacity is calculated according to formula (1):
Q,=Q(1-X)
Volume total exchange capacity, mmol/mL
QaMass total exchange capacity, mltol/g!www.bzxz.net
-Wet apparent density of the resin, g/mL;
XWater content, %.
5.5 Determination of wet apparent density
The determination shall be carried out according to the method specified in GB/T8331. 5.6 Determination of wet true density
The determination shall be carried out according to the method specified in GB/T8330. 5.7 Determination of particle size
5.7.1 D001-TR Determination of resin particle sizeS-TR
0.67~-0.72
1.14~~1.17
298(0.7)~0.90)
Use the method specified in GB/T5758 and sieve with 0.71mm and 1.25mm aperture to sieve the original sample. During the sieving process, backwash the sieve with water for 3 to 5 times. After sieving, calculate according to formula (2) and formula (3), 325
HC/T 2623— 94
Wherein, P-resin particle size of sample with particle size of 0.71～1.25nn, %; V.-sample volume, mI-:
Vi——wood fetal volume with particle size less than 0.71mm, mL; Vz-.resin volume with particle size greater than 1.25mm, nL; P—resin particle size less than 0.71mm, %. 5.7.2 Determination of D201-TR resin particle size
Use the method specified in GB/T5758, use sieves with apertures of 0.45mm and 0.90mm to sieve the original sample. During the sieving process, backwash the sieve with water for 3-5 times. After screening, calculate according to formula (2) and formula (3): - Resin particle size of sample with particle size of 0.45~0.90mm: %; Wherein.
V1---resin volume of sample with particle size less than 0.45mm, mL; V2---resin volume of sample with particle size greater than 0.90rtim, mL: P2-resin particle size of sample with particle size greater than 0.90mm, %; 5. 7. 3 Determination of S-TR resin particle size
Use the method specified in GB/T5758 and use sieves with apertures of 0.71mm and 0.90mm to screen the original sample. During the screening process, backwash the sieve with water for 3 to 5 times. After sieving, calculate according to formula (2): Where: P, —- resin particle size of the sample with a particle size of 0.71 to 0.90 mm, % Vi--the volume of the resin with a particle size less than 0.71 mm mLV--the volume of the resin with a particle size greater than 0.90 mm, ml. 5.8 Determination of the roundness of the infiltration and grinding
D001 TR and D201-TR resins are measured by the method specified in GB/T 12598, and the samples are original. S TR inert resins are measured by the methods specified in 6.7.2 and 7.3.8 of GB/T12598. 6 Inspection rules
6. 1 Each product is considered as one batch per kettle.
6-2 Sampling results shall be inspected by the method specified in GB/T 5175 6.3 Each batch of products shall be inspected by the quality inspection department of the manufacturer. The manufacturer shall ensure that all products meet the technical requirements specified in this standard. Each batch of products shall have a quality inspection report. 6.4 The water content, volumetric total exchange capacity, mass total exchange capacity, wet apparent density, wet true density, particle size and permeability roundness rate in 4.1 Appearance and 4.3 of this standard are all factory inspection items. 6.5 If the user unit needs to inspect the received products, it shall follow the provisions of this standard. If re-inspection is required, it shall be submitted to the manufacturer within three months after receiving the product.
6.6 If a technical requirement of the inspection result does not meet the requirements of this standard, samples shall be taken from twice the number of packages in the batch of products for re-inspection, and the grade shall be determined based on the re-inspection results.
6.7 When the supply and demand parties have objections to the product quality, the two parties shall negotiate to resolve the issue or the statutory quality inspection department shall conduct arbitration. 7 Marking, packaging, transportation and storage
7.1 Marking
Each package should have a clear and firm mark indicating the product name, model, net weight, manufacturer name and this label number. 7.2 Packaging
HG/T2623
The product should be packed in a container or woven bag lined with a transparent plastic bag, and a certificate of conformity should be attached to each package. The certificate of conformity should indicate the grade, batch number and production date.
7.3 Transportation
This series of products contain a certain amount of water. In order not to affect the quality of the product, it should be kept in a temperature environment of 5-40°C during transportation, and care should be taken not to dehydrate the resin.
This product is non-dangerous goods.
7.4 Storage
D001-TR and D201-TR in this series of products can be stored for two years in a well-ventilated room under the conditions specified in Article 7.3, and S-TR resin can be stored for four years. If the storage period exceeds the storage period, it can be re-tested according to the provisions of this standard. If the re-test results still meet the requirements of this standard, it can still be used.
Additional Notes:
This standard was proposed by the Technical Supervision Department of the Ministry of Chemical Industry of the People's Republic of China and is managed by the Plastic Resin Products Branch of the National Plastic Standardization Technical Committee (TC15/SC4). This standard was drafted by Zhengguang Chemical Factory, Yuhang County, Zhejiang Province. The main drafters of this standard are Wu Chongzhi, Lu Liying, Wang Ying, Shao Guoming, and Lao Fayong. 327
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