Calcium carbide furnace tail gas recycling device

Abstract

The invention belongs to the technical field of chemical environmental protection and provides a calcium carbide furnace tail gas recycling device. A tail gas outlet of a calcium carbide furnace is sequentially communicated with an induced draft fan, a silencing type environment-friendly canister, a cyclone separator, a spray washing tower, a gas compressor and a synthetic reactor; an upper partition board and a lower partition board which divide the inside cavity of the silencing type environment-friendly canister into an absorbing chamber, a noise reduction chamber and a cooling chamber are arranged in the silencing type environment-friendly canister, a plurality of first silencing holes are formed in the upper partition board and the lower partition board, an absorbing liquid is accommodated in the absorbing chamber, at least two silencing pipes communicated with the absorbing chamber and the cooling chamber are arranged in the noise reduction chamber, a heat exchange pipe is arranged in the cooling chamber, a gas inlet communicated with the absorbing chamber is formed in the bottom of the silencing type environment-friendly canister, and a gas outlet communicated with the cooling chamber is formed in the top of the silencing type environment-friendly canister; a sodium bicarbonate water solution is accommodated in the synthetic reactor. Recycling of calcium carbide furnace tail gas is realized, resource waste is avoided, pollution to the environment is avoided, and damage to body health is avoided.

Description

technical field [0001] The invention relates to the technical field of chemical engineering and environmental protection, in particular to a recovery and utilization device for calcium carbide furnace tail gas. Background technique [0002] Chemical environmental protection refers to reducing and eliminating the pollution of waste water, waste gas and waste residue (referred to as "three wastes") in chemical production to the surrounding environment and the impact on ecological balance and human health, preventing and controlling pollution, improving the environment, and turning harm into profit. [0003] Calcium carbide furnace tail gas is the tail gas produced during the production of calcium carbide, the main components are: carbon monoxide (content 75% to 90%), hydrogen (content 2% to 10%), methane (content 2% to 4%), etc. Sulfides, phosphides, carbides, calcium and magnesium oxides, coal tar and other more than a dozen components, the tail gas contains a large number of...

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Problems solved by technology

[0004] In the prior art, the calcium carbide furnace tail gas generated during the calcium carbide production process is mostly discharged directly into the atmosphere through the high chimney, which will not only cause environmental pollution, waste resources, but also seriously endanger human health. In addition, the tail gas discharge process will also produce Larger noise pollution, realizing effective treatment of calcium carbide furnace tail gas has become one of the urgent problems to be solved in chemical industry and environmental protection

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