Some standard content:
ICS75.060
Registration No. 104-7
Petroleum and Natural Gas Industry Standard of the People's Republic of China SY/T XXXX_20CX
Formulated Selective Desulfurization Solvent
Fornulal.nd sclective desulfurization solverl (draft for approval)
Published by XXXX_XX_XX
National Economic and Trade Commission
XXXX XX XX Implementation
SYITX XXX
Scope·
2Reference standards·
3Definitions and abbreviations·
4Requirements and test methods·
-X××X
5Inspection rules..
6Marking, labeling, packaging, transportation, storage·Self-test
Appendix A (Appendix to the standard) Determination of foaming tendency·Appendix B (Appendix to the standard) Desulfurization and decarbonization performance evaluation test Appendix C (Appendix to the standard) Random sampling using random number tableSYITXXX X-----X × ×X
Appendix A, Appendix B and Appendix C of this standard are the appendices of the standard. This standard is proposed by China National Petroleum Corporation and is regulated by the National Natural Gas Standardization Technical Committee. Drafting unit of this standard: Natural Gas Research Institute of Southwest Oil and Gas Field Branch of PetroChina Main drafters of this standard: Huang Daihong, Hu Tianyou, Nie Chongbin, Xiong Gang 1 Scope
Petroleum and Natural Gas Industry Standard of the People's Republic of China SY/T× ×××---×X ×
Formulated selective desuifurization solyent
Formulated selective desuifurization solyent This standard specifies the requirements, test methods, inspection rules, and marking, labeling, packaging, transportation and storage of formulated selective desulfurization solyent.
This standard applies to formulated desulfurization solvents for selective removal of H2S from natural gas and refinery gas. 2 Cited standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard was published, the versions shown were valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards.
GB/T 510-88
Determination of condensation point of petroleum products
GB/T6283-86Determination of water content of chemical products by Karl Fischer methodGB/T6324·1-86Test method for water solubility of organic chemical productsGB/T6678-86
GB/T6680-86
GB/T9729-88
General rules for sampling of chemical products
General rules for sampling of liquid chemical products
General method for determination of chloride in chemical reagents
GB/T10111-88 Method for random sampling using random numbersSY/T×XX×--××××Analysis method for gases and solutions in natural purification plants (pending approval)3 Definitions and abbreviations
This standard adopts the following definitions:
3.1 Formulated selective desulfurization solvent: refers to a desulfurization solvent compounded with MDEA as the basis and other additives. It selectively removes H2S and CO, and the removal rate is lower than that of MDEA of the same concentration. 3.2MDEA: The Chinese name is N-methyldiethanol, the molecular formula is CH,N (CHCH,OH) 2, and the relative molecular mass is 119.2.
4 Requirements and test methods
National Petroleum and Chemical Industry Bureau ×-X×-X× approved 1
XX-XX-XX implementation
SY/TX×XX--XXXX
The requirements for formula-type selective desulfurization solvents shall comply with the provisions in Table 1: Table 1 Technical requirements and test methods for formula-type selective desulfurization solvents Item
Water, w, %
C1, w, 106
Condensation point, ℃
Water solubility test
Foaming tendency
(w=40% aqueous solution, 30℃)
Foaming height, mm
Defoaming time, 5
Desulfurization performance (IS removal rate), %
Decarbonization performance, compared with the same concentration of MDEA (W=40% aqueous solution), CO: Reduction value of removal rate, %
5 Inspection rules
5.1 Inspection type
Except for the desulfurization and decarbonization performance, which is the first piece inspection, all other items are factory inspections. 5.2 Product inspection
Test method
CiB6283
GB9729
GB6324
Appendix A
Appendix B
This product is inspected by the quality inspection department of the manufacturer according to the product technical requirements and test methods. The manufacturer shall ensure that all products leaving the factory meet the requirements of this standard. Each batch of products shall be accompanied by a quality inspection form and a quality certificate. The contents of the quality certificate include the product name and code, batch number and batch size, production date, expiration date, implemented standard number, manufacturer's name and address, inspection date, and inspector code. 5.3 Batching and sampling rules
5.3.1 Batching is determined by the manufacturer and the user based on actual conditions. The number of sampling units and sample size for each batch shall be in accordance with 6.6.1 of GB6678-86. Determine.
5.3.2 Sampling shall be carried out in accordance with the provisions of CB10111-88 or by using a random number table. The random number table and its usage are shown in Appendix C.
5.3.3 Samples shall be taken in accordance with the provisions of 2.1 of GB6680-86. 5.3.4 Mix the obtained samples thoroughly, divide them into two clean and dry ground-mouth bottles, and label them. The product name and code, batch number, production date, sampling location, sampling date and sampler shall be filled in the labels. One bottle shall be handed over to the quality inspection department for inspection, and the other bottle shall be kept for three months for re-inspection. 5.4 Judgment rules
5.4.1 Products with all indicators in accordance with the requirements of this standard are qualified products. 2
SYIT XXXX--XX XX
5.4.2 In the test results, if there is only one index that does not meet the requirements of this standard, the test equipment, analytical instruments and reagents should be checked and then retested. If all the indexes are qualified in the second test, the batch of products is qualified. If one or more indexes are unqualified in the second test, the batch of products is unqualified. 6 Marking, labeling, packaging, transportation and storage 6.1 Marking, labeling
6.1.1 This product should have a product certificate when leaving the factory. The content of the certificate should include: product name, product code, label number, production date, validity period, batch number, batch size, name and address of the production unit, inspection date, inspector code, 6.1.2 The outer packaging of the product should have obvious and firm markings. The marking content includes: product name, product code, net content, date of manufacture, validity period, name and address of the production unit. 6.2 Packaging
This product is packaged in galvanized barrels.
6.3 Transportation
This product should be loaded and unloaded gently during transportation to prevent violent impact. 6.4 Storage
This product should be stored in a cool and ventilated place.
A1 Brief Principle
SYIF XXXX--XXXX
Appendix A
(Standard Appendix)
Determination of Foaming Tendency
Nitrogen passes through a fixed volume of sample under specified conditions to determine the foam height and stability of the solution. A2 Apparatus
Foaming tube: See Figure A1.
Rotameter: Full scale nitrogen flow, 300ml/minA2.2
Constant temperature water bath
G-3 glass sand
Figure A1 Foaming tube
A3 Operation steps
A3.1 Turn on the constant temperature water bath and control the water bath temperature at 30℃±1℃. A3.2 Prepare the desulfurization solvent into a 40% (w) aqueous solution. When the water bath reaches the predetermined temperature, add the sample with a height of h,=100mm into the foaming tube, and put it into the constant temperature water bath for 10min. A3.3 After nitrogen passes through the gas flow meter and then through the foaming tube, the flow rate reaches 250ml/min and starts timing after it stabilizes, e
SYITX×x×-××x
ventilate for 5min, stop ventilation, record the foam height hz (the difference between the final foam height of the liquid surface and the initial solution height) and the defoaming time (time after stopping the gas, stop when the foam just breaks and clear liquid is seen). A4 Report
Record the foam height and defoaming time of the formulated selective desulfurization solvent at W~40% and 30℃. 5
B1 Brief Principle
SYIT XXXx-XXxX
Appendix B
(Appendix of the Standard)
Evaluation of Desulfurization and Decarbonization Performance
Simulate the industrial device, prepare the desulfurization solvent into a W-40% aqueous solution, introduce a certain amount of raw gas, examine the content of H2SCO2 in the purified gas, and then compare the desulfurization and decarbonization performance of the formulated selective desulfurization solvent and MDEA under the same conditions. B2 Instruments and Equipment
B2.1 Evaluation device as shown in Figure B1.
Purified gas
Figure B1 Desulfurization and decarbonization performance evaluation device
1 Rotor flowmeter 2 Gas mixing tank 3 Raw gas sampling port 4 Absorption tower 5 Rich liquid storage tank--
SYIT X XXX--X XXX
6 Lean liquid storage tank 7 Plunger metering image, 8 Purified gas separator 9 Purified gas sampling 110 Wet flowmeter B2.1.1 Rotor flowmeter: full scale nitrogen flow, 600mL/min. B2.1.2 Wet gas flowmeter: graduation value 0.025L, indication error ±1%. B2.1.3 Glass absorption tower: 1m high, inner diameter 25mm, filled with stainless steel rolled hole high-efficiency filler, B2.1.4 Plunger metering pump: maximum flow 2L/h. B2.2 Analytical instruments and equipment
B2.2.1 Gas chromatograph and processor, 50ml syringe, conditions meet the eighth chapter of SY/T××××--×××× "Analysis of gas and solution in natural gas purification plant". B3 Operation steps
Mix the desulfurization solvent into a w-40% aqueous solution and add it to the lean liquid storage tank. Start the device, adjust the solution circulation volume to 0.335L/h, the outlet gas flow rate is 25L/h (the CO content of the raw gas is 10%: H, S content is 1%), the absorption tower is kept at a constant temperature of 40℃, and after the device is stable, analyze the H2S and CO2 content in the raw gas and purified gas every half an hour. The analysis method is analyzed and calculated according to the fourth and eighth chapters of SY×××--×××× "Analysis of gas and solution in natural gas purification". Continuous operation for 4h.
B4 Calculation and expression of results
B4.1 Calculation
Vidi's
Wherein: Es, Ec*--removal rates of H2S and O2, respectively, %(1)
DH, i:O---volume fractions of I2S and CO2 in the raw gas, respectively, %: dmzs, @cc:—.-are the integral fractions of Hzs and CO2 in the purified gas, respectively; %V, V---gas flow rates of raw gas and purified gas, respectively, L/h. Under the same conditions, the removal rates of CO by MDEA and formulated selective desulfurization solvents are compared. -E-Ec
SYII XXXX--XXXx
Where: n---Compared with the same concentration of MDEA, the reduction value of the CO2 removal rate of the formula selective desulfurization solvent, %: EIcr, Ez1----respectively the removal rate of CO2 by the formula selective desulfurization solvent and MDEA, %Result report
Take the arithmetic mean of three parallel determinations as the analysis result, and the results are expressed to one decimal place. Precision
BS.1 Repeatability
In the same laboratory, by the same operator, using the same test method and instrument, the same sample is repeated twice in succession, and the difference in the results should not be greater than 20% of the smaller measured value. Aesthetics
SYIT XXXX--XXXX
Appendix ℃
(Standard Appendix)
Random sampling using a random number table
Random sampling is the most commonly used sampling method. Its basic principle is that the probability of taking a part of the population is equal. Samples are usually drawn with the help of a random number table. The random number table is composed of two digits of 0099, usually 2 to 4 pages, 50 rows and 25 columns per page, a total of 1250 two-digit numbers. Appendix CI gives 2500 two-digit numbers. You can use this table to choose pages, rows, and columns at will. Before sampling, the unit products that constitute the population should be numbered, and then start from a row (or column) of the random number table and read the numbers in the same direction. If the expected number of units has not been drawn when the end of the row (or column) is reached, the numbers should continue to be read from the next row (or column) in the same direction until the expected number is drawn. If the number of unit products that constitute the population is greater than two digits, the number of digits required can be read from the random number table. For example, if 10 samples are drawn from a population of 500 units of product, and if the numbers are read downward starting from row 20, column 11 of Appendix C1, and repeated and meaningless numbers (i.e., numbers greater than 500) are discarded during the reading process, the following ten 1-digit random numbers are read: 201, 442, 029, 110, 348, 076, 040, 019, 421, 267. Finally, ten random samples with the required numbers are drawn from the population.1 RepeatabilitywwW.bzxz.Net
In the same laboratory, by the same operator, using the same test method and instrument, the same sample is tested twice in succession, and the difference in the results should not be greater than 20% of the smaller measured value. Aesthetics
SYIT XXXX--XXXX
Appendix ℃
(Standard Appendix)
Random sampling using a random number table
Random sampling is the most commonly used sampling method. Its basic principle is that the probability of a part of the population being taken is equal. Samples are usually drawn with the help of a random number table. The random number table is composed of two digits of 0099, usually giving 2 to 4 pages, each page with 50 rows and 25 columns, a total of 1250 two-digit numbers. Appendix CI gives 2500 two-digit numbers. Using this table, you can choose pages, rows, and columns at will. Before sampling, the units of products constituting the population should be numbered, and then the numbers should be read in the same direction starting from the first row (or column) of the random number table. If the expected number of units has not been drawn when the end of the row (or column) is reached, the numbers should be read in the same direction from the next row (or column) until the expected number is drawn. If the number of units constituting the population is greater than two digits, the number of digits required can be read from the random number table. For example, if 10 samples are drawn from a population consisting of 500 units of products, if the numbers are read in a downward direction starting from the 20th row and the 11th column of Appendix C1, and the repeated and meaningless numbers (i.e. greater than 500) are discarded during the reading process, the following ten one-digit random numbers are read: 201, 442, 029, 110, 348, 076, 040, 019, 421, 267. Finally, ten random samples with the required numbers are drawn from the population.1 Repeatability
In the same laboratory, by the same operator, using the same test method and instrument, the same sample is tested twice in succession, and the difference in the results should not be greater than 20% of the smaller measured value. Aesthetics
SYIT XXXX--XXXX
Appendix ℃
(Standard Appendix)
Random sampling using a random number table
Random sampling is the most commonly used sampling method. Its basic principle is that the probability of a part of the population being taken is equal. Samples are usually drawn with the help of a random number table. The random number table is composed of two digits of 0099, usually giving 2 to 4 pages, each page with 50 rows and 25 columns, a total of 1250 two-digit numbers. Appendix CI gives 2500 two-digit numbers. Using this table, you can choose pages, rows, and columns at will. Before sampling, the units of products constituting the population should be numbered, and then the numbers should be read in the same direction starting from the first row (or column) of the random number table. If the expected number of units has not been drawn when the end of the row (or column) is reached, the numbers should be read in the same direction from the next row (or column) until the expected number is drawn. If the number of units constituting the population is greater than two digits, the number of digits required can be read from the random number table. For example, if 10 samples are drawn from a population consisting of 500 units of products, if the numbers are read in a downward direction starting from the 20th row and the 11th column of Appendix C1, and the repeated and meaningless numbers (i.e. greater than 500) are discarded during the reading process, the following ten one-digit random numbers are read: 201, 442, 029, 110, 348, 076, 040, 019, 421, 267. Finally, ten random samples with the required numbers are drawn from the population.
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.