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Calcium carbide furnace tail gas comprehensive utilization system and process

A technology of calcium carbide furnace tail gas and tail gas, which is applied in the chemical industry, combined devices, climate sustainability, etc., can solve problems such as pollution and waste of energy, and achieve obvious effects of reducing device energy consumption, saving energy, and saving water

Inactive Publication Date: 2021-04-27
恒力石化(大连)炼化有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, calcium carbide furnace gas is mainly used for incineration for power generation or evacuation and combustion, which not only wastes energy, but also produces a lot of pollution

Method used

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  • Calcium carbide furnace tail gas comprehensive utilization system and process

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Embodiment 1

[0036] As shown in the figure, a comprehensive utilization system of calcium carbide furnace tail gas, including water-cooled flue, cyclone settler, tail gas heat exchanger, high-temperature filter bag dust collector, tar removal heat exchanger, scrubber and gas cabinet;

[0037] The cyclone settler adopts three-stage cyclone settler (the height of each cyclone settler is 5000mm, Ф3000mm) connected in series. After the calcium carbide furnace exhaust passes through the water-cooled flue, it passes through the cyclone settler 1, the cyclone settler 2 and the cyclone settler 3 in sequence. The gas outlet of the settler 3 is connected to the gas inlet of the tail gas heat exchanger (height 8000mm, Ф3500mm); the gas outlet of the tail gas heat exchanger is connected to the high temperature filter bag filter through the rough gas fan;

[0038] The high-temperature filter bag dust collector adopts three-stage filter bag dust collector (the height of each filter bag dust collector is ...

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Abstract

The invention relates to a comprehensive utilization system and process for tail gas of calcium carbide furnace gas. The system comprises a water cooling flue, a cyclone settler, a tail gas heat exchanger, a high-temperature filter bag dust collector, a tar removal heat exchanger, a washing tower and a gas holder. According to the invention, a dry-process and wet-process purification treatment technology is adopted, tail gas generated by a plurality of calcium carbide furnaces can be treated at the same time, and the problem that follow-up furnace gas user production is unstable due to large fluctuation of gas quantity and components of a single calcium carbide furnace in a large-scale calcium carbide factory is solved. The purified and washed calcium carbide furnace tail can be used for calcining limestone and producing methanol, meanwhile, boiler water of a power plant is utilized for heat recovery, circulating water is replaced, energy is saved, meanwhile, emission of calcium carbide furnace gas is correspondingly reduced, and the calcium carbide furnace tail gas comprehensive utilization systemis environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of calcium carbide production, in particular to a comprehensive utilization system and process for calcium carbide furnace tail gas. Background technique [0002] The use of limestone and semi-coke to produce calcium carbide belongs to the traditional industry, which causes great pollution and high energy consumption. The "Calbium Carbide Industry Access Conditions" implemented in 2014 requires that the capacity of the sealed calcium carbide furnace is not less than 40,000kVA; at the same time, the calcium carbide furnace gas must be recycled and comprehensively utilized. At present, calcium carbide furnace gas is mainly used for incineration for power generation or evacuation and combustion, which not only wastes energy, but also produces a lot of pollution. Therefore, the proposed system and process for comprehensive utilization of calcium carbide furnace tail gas has very broad application prospects. C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D50/00C01B3/12F22D1/16
CPCC01B3/12F22D1/16B01D50/10Y02P20/10
Inventor 王雷赵爽栗铭
Owner 恒力石化(大连)炼化有限公司
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