Technology for desulfurizing coal gas in coal production

Abstract

The invention discloses a process based on coal gas desulfurization in coal production. The ammonia contained in the coke oven gas itself is used as the alkali source, and the gas after the blower enters the pre-cooling tower and reversely contacts the circulating cooling water sprayed on the top of the tower for cooling. ; The circulating cooling water is pumped from the lower part of the tower to the circulating water cooler, cooled indirectly by low-temperature water and sprayed on the top of the tower. Absorb the hydrogen sulfide in the gas, contact and react with the air entering from the bottom of the regeneration tower in the regeneration tower, the sulfur foam is clarified and separated in the sulfur melting kettle, and the clear liquid discharged from the upper part of the sulfur melting kettle flows into the clear liquid tank, pumped out and cooled After that, it is sent to the solution circulation tank for recycling, and the sulfur discharged from the lower part of the sulfur melting kettle is cooled and bagged. This process can basically remove the sulfur in the gas, so that no harmful substances containing sulfur will be produced during the combustion of the gas, which ensures the safety of use, protects the environment and improves the competitiveness of enterprises.

Description

technical field [0001] The invention relates to a process, in particular to a process based on coal gas desulfurization in coal production. Background technique [0002] Coal is a solid combustible mineral that was gradually formed by ancient plants buried underground through complex biochemical and physicochemical changes. It is a kind of solid combustible organic rock, which is mainly formed by biochemical action of plant remains, and then transformed by geological action after burial, commonly known as coal. Coal is known as black gold and the food of industry. It has been one of the main energy sources used by the human world since the eighteenth century. Coal is a layer of extremely thick black humus accumulated on the ground from the branches, leaves and rhizomes of plants for millions of years. Due to the changes in the earth's crust, it is continuously buried in the ground, isolated from the air for a long time, and under high temperature and pressure. After a seri...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the low efficiency of the above-mentioned existing desulfurization process, resulting in many impurities in the gas, high cost, serious pollution, and unfavorable for the development of enterprises. This process can basically remove the sulfur in the gas, so that no harmful substances containing sulfur will be produced during the combustion of the gas, which ensures the safety of use, protects the environment, improves the competitiveness of the enterprise, and solves the low efficiency of the existing desulfurization process , resulting in a lot of impurities in the gas, which makes the cost high, the pollution is serious, and it is not conducive to the development of the enterprise.

[0005] In summary, the beneficial effects of the present invention are: the process can basically remove the sulfur in the gas, so that no sulfur-containing harmful substances will be produced during the combustion of the gas, which ensures the safety of use, protects the environment, and improves the competitiveness of enterprises. It solves the problem of low efficiency of the existing desulfurization process, resulting in many impurities in the gas, high cost, serious pollution, and unfavorable to the development of enterprises.