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A system and method for measuring the solubility of plasma cracked gas
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A technology for plasma cracking and solubility determination, applied in the field of ion cracking gas gas solubility determination system, can solve the problems of complicated operation, complicated equipment, inaccurate results, etc., and achieve the effects of accurate results, simple operation and easy realization.
Active Publication Date: 2019-08-23
SOUTHWEST RES & DESIGN INST OF CHEM IND
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[0007] The technical problem solved by the present invention is to provide a gas solubility measurement system for plasma cracking gas, which can measure the solubility of unsaturated hydrocarbons such as acetylene, ethylene, and methane generated after methane-rich gas is cracked by plasma, and solve the problem of the prior art. The problems of complex equipment, cumbersome operation and inaccurate results
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Embodiment 1
[0036] as attached Figure 1-2 As shown, this embodiment provides a gas solubility measurement system for plasma cracking gas, which is simple in structure and scientific in design, and can effectively measure the solubility of acetylene and other gases in plasma cracking gas in various solvents. It is easy to operate and easy to use in the laboratory. implemented, and the results are accurate. The measurement system of the present invention comprises a glass kettle 1, a vacuum tube 10, a vacuum pump 5, a needle 9, a high-pressure inflation tube 11, a constant temperature water bath 2 for water-bath heating of the glass kettle 1, and a gas cylinder filled with high-pressure plasma cracking gas. 6, and an electronic balance 17 for weighing the glass kettle 1; the needle 9 is connected to the gas cylinder 6 through a high-pressure inflation pipe 11, and the glass kettle 1 is placed in the constant temperature water bath 2.
[0037] The glass kettle 1 includes a glass kettle bod...
Embodiment 2
[0042] The present embodiment provides the assay method of the solubility of acetylene gas in N-formylmorpholine, adopts the system in embodiment 1 to carry out, specifically comprises the following steps:
[0043] Step 1: Use an electronic balance to weigh the vacuumed glass kettle, and record the mass as m 1 , and then add N-formylmorpholine to dissolve; the precision of the electronic balance is 0.01mg;
[0044] Step 2: Connect the glass kettle with N-formylmorpholine solvent to the vacuum pump, after the air in the glass kettle is exhausted by the vacuum pump, tighten the cock valve on the glass kettle, take off the glass kettle and place it in the electronic Weigh on a balance and record the mass in m 2 ;
[0045] Step 3: Set the mass as m 2 The glass kettle is fixed on the iron stand, and after inserting the thermometer into the blind hole of the thermometer socket, place it in a constant temperature water bath and heat it to the set temperature of 25°C, and stir it t...
Embodiment 3
[0056] This example provides a test of the solubility of acetylene gas in the solvent N-methylpyrrolidone. The experimental procedure is the same as that of Example 2. The solubility of acetylene gas in N-methylpyrrolidone was tested at temperatures of 25° C. and 50° C. and pressures of 50 kPa and 100 kPa, respectively. The results are shown in Table 2.
[0057] Table 2 Solubility test results of acetylene in N-methylpyrrolidone
[0058]
[0059] Note: Solubility unit g / 100g solvent
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Abstract
The invention discloses a plasma pyrolysis gas solubility measuring system and method, and solves the problems of the prior art that the equipment is complicated, the operation is tedious and the result is not accurate enough. The measuring system comprises a glass kettle, a vacuumizing tube, a vacuum pump, a needle, a high-pressure gas tube, a thermostatic waterbath pot, a gas cylinder and electronic scales; the needle and the gas cylinder are connected through the high-pressure gas tube; the glass kettle is arranged in the thermostatic waterbath pot; the two ends of the vacuumizing tube areconnected with the top of the neck of the glass kettle and the vacuum pump respectively; a cock valve is arranged on the neck of the glass kettle; a sealed sample inlet is formed on one side of the upper part of the glass kettle body; a thermometer is arranged on the other side of the upper part of the glass kettle body and is in sleeve joint with a blind hole channel; the gas cylinder charges a high-pressure plasma pyrolysis gas into the glass kettle body by inserting the needle into the sample inlet. The measuring method disclosed by the invention is implemented by using the measuring system. The measuring system and the measuring method disclosed by the invention have the advantages of simple structure and scientific design, and can be used for effectively measuring solubility, in various solvents, of acetylene and other gases in the plasma pyrolysis gas.
Description
technical field [0001] The invention belongs to the technical field of chemical analysis, and in particular relates to a plasma cracking gas solubility measurement system and method. Background technique [0002] Acetylene is a bulk basic chemical raw material. Mainly used in the production of polyvinyl chloride (PVC), vinyl acetate, butanediol and cutting gas. At present, the production processes of acetylene mainly include calcium carbide method, partial oxidation of natural gas and plasma cracking process of natural gas. In my country, more than 99% of acetylene is produced by calcium carbide method. Due to problems such as high energy consumption and high pollution, developed countries basically no longer produce calcium carbide. The calcium carbide method has inevitable disadvantages: long technological process and serious environmental pollution. Therefore, in the developed regions of Europe and North America, the process of producing acetylene from calcium carbide...
Claims
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Application Information
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