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Method for producing artificial liquefied gas by compressing methane and acetylene gas

A technology of liquefied gas and acetylene gas, which is applied in the direction of gas fuel, alkali metal sulfide/polysulfide, petroleum industry, etc. It can solve the problems of strong corrosion of equipment, improve purity and quality, simple operation, and high economic benefits Effect

Inactive Publication Date: 2012-01-11
王嘉兴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hydrogen sulfide is a gas with the smell of rotten eggs, which is a strong nerve poison. The combustion of hydrogen sulfide produces sulfur dioxide or sulfur trioxide, which is highly corrosive to equipment.

Method used

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Examples

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Effect test

Embodiment 1

[0022] A method for producing artificial liquefied gas by compressing biogas and acetylene gas, comprising the following specific steps:

[0023] Step A-1, biogas purification: prepare calcium hydroxide solution, which contains 74kg of calcium hydroxide, and put it into the reaction kettle, feed biogas into the calcium hydroxide solution from the bottom of the reaction kettle, and control the biogas flow rate at 200m 3 / h, the pressure in the reactor is controlled at 1.2MPa, wherein, the mass ratio of carbon dioxide and calcium hydroxide pure substance participating in the reaction is 1: 1.68, the reaction generates calcium carbonate and calcium sulfide, and obtains a mixed solution containing calcium carbonate and calcium sulfide and purified biogas, the purified biogas is output from the top of the reactor and input into the compression tank;

[0024] Step B, preparation of acetylene gas: place calcium carbide and water in a gas generating tank to react to generate acetylene...

Embodiment 2

[0030] A method for producing artificial liquefied gas by compressing biogas and acetylene gas, comprising the following specific steps:

[0031] Step A-1, biogas purification: Prepare calcium hydroxide solution, which contains 74kg of calcium hydroxide, and put it into the reactor, feed biogas into the calcium hydroxide solution from the bottom of the reactor, and control the biogas flow rate at 220m 3 / h, the pressure in the reactor is controlled at 1.6MPa, wherein, the mass ratio of carbon dioxide and calcium hydroxide pure substance participating in the reaction is 1: 1.88, the reaction generates calcium carbonate and calcium sulfide, and obtains a mixed solution containing calcium carbonate and calcium sulfide and purified biogas, the purified biogas is output from the top of the reactor and input into the compression tank;

[0032] Step B, preparation of acetylene gas: place calcium carbide and water in a gas generating tank to react to generate acetylene gas and calcium...

Embodiment 3

[0038] A method for producing artificial liquefied gas by compressing biogas and acetylene gas, comprising the following specific steps:

[0039] Step A-1. Purification of biogas: prepare calcium hydroxide solution, which contains 74kg of calcium hydroxide, and put it into the reaction kettle, and feed biogas into the calcium hydroxide solution from the bottom of the reaction kettle, and the biogas flow rate is controlled at 240m 3 / h, the pressure in the reactor is controlled at 1.8MPa, wherein, the mass ratio of carbon dioxide and calcium hydroxide pure substance participating in the reaction is 1: 1.48, the reaction generates calcium carbonate and calcium sulfide, and obtains a mixed solution containing calcium carbonate and calcium sulfide and purified biogas, the purified biogas is output from the top of the reactor and input into the compression tank;

[0040] Step B, preparation of acetylene gas: place calcium carbide and water in a gas generating tank to react to gener...

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PUM

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Abstract

The invention provides a method for producing artificial liquefied gas by compressing methane and acetylene gas. The method comprises the following steps of: purifying methane with calcium hydroxide or sodium hydroxide, cooling purified methane and acetylene gas to minus 82.55 DEG C in a compression tank, and compressing methane and acetylene gas into liquid under high pressure, thus liquefied gas is obtained. The method provided by the invention is simple to operate and is convenient to popularize and apply, and carbon dioxide and hydrogen sulphide impurities which are contained in methane are effectively absorbed, thus purity and quality of methane are improved; and meanwhile, waste materials are changed into things of value, a calcium carbonate product with higher economic benefit is obtained, and potential economic value of methane is effectively developed.

Description

technical field [0001] The invention relates to the technical field of biogas purification, in particular to a method for producing artificial liquefied gas by compressing biogas and acetylene gas. Background technique [0002] At present, biogas digesters have been widely used in rural areas of our country, and the use of biogas for cooking and lighting has become quite common. On the one hand, this improves the living conditions of farmers, on the other hand, it also reduces living expenses and makes comprehensive use of energy. However, since the raw biogas only contains 60-65% combustible components, the remaining components are mainly carbon dioxide, and also contain a small amount of hydrogen sulfide and water vapor. Among them, the content of carbon dioxide is about 35-40%, which reduces the combustible value or energy value of biogas. Hydrogen sulfide is a gas with the smell of rotten eggs, which is a strong nerve poison. The combustion of hydrogen sulfide produces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L3/00C10L3/10C01F11/18C01D7/07C01B17/22
Inventor 王嘉兴
Owner 王嘉兴
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