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Hydrogenation test method

A hydrogenation test, hydrogen technology, applied in the direction of chemical instruments and methods, hydrocarbons, bulk chemical production, etc., can solve the threat to the safe operation of the compressor, the cooling medium cannot use water, and the compression ratio of the compressor is large. Achieve the effects of reducing equipment and operating costs, improving operating stability, and reducing equipment manufacturing costs

Inactive Publication Date: 2014-06-11
北京昊诚油气科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The one-stage compression method can be used to mix all the materials in the gas phase, and the one-stage compression method is adopted, but the compression ratio of the compressor is too large, so that the outlet temperature of the compressor rises above 100°C, which brings a negative impact on the safe operation of the compressor. Serious threats, the cooling medium cannot use water, so that the operating cost rises sharply

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Perform primary compression on methane, increase the pressure of methane from 0.5MPa to 1.5MPa, and then mix it with carbon 2 fraction, carbon 3 fraction, and hydrogen. device.

[0043] The composition of the prepared reaction mass is:

[0044] Hydrogenation Feedstock H 2 C 2 h 2 C 2 h 4C 2 h 6 CH 4 C 3 h 6 C 3 h 8 PDMA CO C 4 +

[0045] Content (Φ%) 20 0.7 35 4.0 25 12.3 2 0.50 0.2 0.3

[0046] The loading volume of the catalyst is 300ml, and the grade of the catalyst is G-83C.

Embodiment 2

[0048] Reduce the pressure of C3 to 0.5MPa, mix it with methane, and then carry out one-stage compression, increase the pressure to 1.5MPa, and then mix it with C2 fraction and hydrogen, after mixing, two-stage compression to 4MPa, and then pass through the mass flow meter distributed to each reactor.

[0049] The composition of the prepared reaction mass is:

[0050] Hydrogenation Feedstock H 2 C 2 h 2 C 2 h 4 C 2 h 6 CH 4 C 3 h 6 C 3 h 8 PDMA CO C 4 +

[0051] Content (Φ%) 19 0.7 35 4.3 25 13 2 0.50 0.2 0.3

Embodiment 3

[0053] Compress methane in one stage until the pressure increases to 1.6MPa, reduce the pressure of C3 to 2.0MPa, then mix it with carbon distillate and hydrogen, and compress it in two stages to 4MPa after mixing, and then distribute it to each reactor through a mass flow meter .

[0054] The composition of the prepared reaction mass is:

[0055] Hydrogenation Feedstock H 2 C 2 h 2 C 2 h 4 C 2 h 6 CH 4 C 3 h 6 C 3 h 8 PDMA CO C 4 +

[0056] Content (Φ%) 22 0.7 33.3 4.0 24 13 2 0.50 0.2 0.3

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Abstract

The invention relates to a hydrogenation test method. The method comprises steps of: before distribution, decompressing a C3 fraction till gasification; carrying out on-line distribution with other gas phase materials; carrying out two stage compression to reach a reaction pressure; sending the gas into each reactor while ensuring consistent material composition at each reactor inlet and parallelism and repeatability of the experiment. The method can be applied to hydrogenation catalyst evaluation test or industrial hydrogenation technology simulation test. In the invention, a first stage compression can use a smaller compressor, and a secondary compression has a compression ratio less than 4, so as to substantially reduce cost of equipment and operation. After employment of the method of the present invention, stationarity of test operation is enhanced substantially, and material composition of each reactor is completely consistent; besides, manufacture cost of the equipment decreases by 30%, and operation cost decreases by 10%.

Description

technical field [0001] The invention relates to the field of cracking to produce olefins, in particular, the invention relates to a hydrogenation test method for alkyne removal in the ethylene production process. Background technique [0002] In the production plant of hydrocarbon steam cracking to produce olefins, the cracked gas at the outlet of the cracking furnace usually contains 0.2% to 0.7% acetylene, and if the cracking depth is high, the acetylene content can even be as high as 0.9%. Alkynes contained in ethylene and propylene products often cause problems in the production process of ethylene and propylene derivatives. They may reduce catalyst activity, increase catalyst consumption, and even affect catalyst life; may deteriorate product quality and deteriorate polymer properties; may form unsafe factors; may produce some undesirable by-products. Therefore, the production of most ethylene and propylene derivatives puts forward stricter requirements on the alkyne c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C7/167C07C7/163C07C11/04C07C11/06
CPCY02P20/52
Inventor 王春生刘伟何开安贾相飞张怡美靳国忠徐忠孝张琳
Owner 北京昊诚油气科技有限公司
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