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High-concentration and low-concentration gas mixing system and gas mixing process control method thereof

A low-concentration gas and high-concentration technology, which is applied in the pipeline system, gas/liquid distribution and storage, mechanical equipment, etc., can solve the problems that the unit cannot operate normally, cannot automatically adjust the gas mixing volume and the range of gas concentration used by parameters, etc. To achieve the effect of guaranteeing safety and stability, improving operating efficiency and high automatic adjustment ability

Pending Publication Date: 2021-01-05
SHANXI KAIJIA COALBED METHANE POWER GENERATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing gas mixing system, when the gas supply gas concentration is greater than 30% or less than 9%, the unit cannot operate normally; and when the generator sets with different high and low concentrations are in different working conditions, automatic adjustment of the gas mixing volume and parameters cannot be realized Make the mixed gas reach the gas concentration range of the generator set. Therefore, it is necessary to provide a mixed gas distribution system to mix high-concentration gas with low-concentration gas or air, so that the gas concentration of the gas supply can be automatically adjusted to suit high and low concentration units.

Method used

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  • High-concentration and low-concentration gas mixing system and gas mixing process control method thereof
  • High-concentration and low-concentration gas mixing system and gas mixing process control method thereof
  • High-concentration and low-concentration gas mixing system and gas mixing process control method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] Embodiment 1: for high-concentration units;

[0089] Working condition 1: When the gas concentration of Yitang Coal Industry's incoming gas is 46%~70%, the incoming gas of Yitang Coal Industry is greater than the pure gas consumption (9654Nm3 / h) required by the 11 units of the whole plant, and the incoming gas of Anyi Coal Industry All the air is emptied, the gas from Yitang Coal Industry removes the gas consumption of the whole plant, and the excess part is emptied, and then enters the gas mixing device through No. The gas concentration at the outlet of the gas mixing device is 45%; when the gas concentration of Yitang incoming gas is 70%, the maximum mixing air volume is 7662Nm3 / h.

[0090] Working condition 2: When the gas concentration of incoming gas from Yitang Coal Industry is 33%~46% and the gas concentration of Anyi incoming gas is greater than 25%, the incoming gas from Yitang Coal Industry is less than the pure gas consumption required by the 11 units of the ...

Embodiment 2

[0094] Embodiment 2: For low-concentration units;

[0095] (1) In the initial stage, the Unicom valve of Line 1 and Line 2 is opened at the valve well of the vegetable field, and a small amount of high-concentration coal gas is transported to the third phase through the Anyi pumping station, and then the company's nitrogen generator is used to provide compressed air for The rubber hose leads from the outlet of the compressed air storage tank of the nitrogen generator to the nitrogen injection port of the low negative pressure outlet pipeline of the Anyi pumping station, injects compressed air from the nitrogen injection port, and then adjusts the vegetable field valve well to the No. 1 line and The opening of Unicom valve on Line 2 adjusts the gas volume of high-concentration gas from Yimei Coal to the third phase to adjust the gas concentration mixed with compressed air to about 20%, and the gas mixture pressure in the third phase is 6KPa, which satisfies the gas source of the...

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Abstract

The invention discloses a high-concentration and low-concentration gas mixing system, belongs to the technical field of high-concentration and low-concentration gas mixing systems, and aims to providean improvement of a hardware structure of the high-concentration and low-concentration gas mixing system. According to the technical scheme for solving the technical problem, the high-concentration and low-concentration gas mixing system comprises a high-concentration gas pump station, a low-concentration gas pump station, a gas mixing device and a control system, wherein the high-concentration gas pump station is connected with a high-concentration gas inlet of the gas mixing device through a gas conveying pipeline; the low-concentration gas pump station is connected with a low-concentrationgas inlet of the gas mixing device through the gas conveying pipeline; the high-concentration gas inlet is connected with a gas inlet of a mixer through a high-concentration pipeline; the low-concentration gas inlet is connected with a gas inlet of the mixer through a low-concentration pipeline; a gas outlet of the mixer is connected with a mixed gas outlet of the gas mixing device through a pipeline; and the mixed gas outlet is connected with a generator set through the gas conveying pipeline; The high-concentration and low-concentration gas mixing system is applied to high-concentration andlow-concentration gas mixing.

Description

technical field [0001] The invention discloses a high and low concentration gas mixing system and a gas mixing process control method thereof, belonging to the technical field of a high and low concentration gas mixing system and a gas mixing process control method thereof. Background technique [0002] As a fuel, gas can be used for power generation by internal combustion engines. Gas internal combustion engines are divided into high and low concentration units. The applicable concentration range of the high-concentration unit is 30%-50%, and the applicable concentration range of the low-concentration unit is 9%-30%. Only when the gas within the corresponding concentration range is rationed can the unit operate normally. [0003] In the existing gas mixing system, when the gas supply gas concentration is greater than 30% or less than 9%, the unit cannot operate normally; and when the generator sets with different high and low concentrations are in different working conditio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D1/065F17D3/01F17D3/18F17D5/00F17D5/06
CPCF17D1/065F17D3/01F17D3/18F17D5/005F17D5/06
Inventor 张志飞钮海山闫可高阳韩文民王刚梁振华
Owner SHANXI KAIJIA COALBED METHANE POWER GENERATION CO LTD
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