Novel liquid discharge device of coke oven coal gas

Abstract

The invention discloses a novel liquid discharge device of coke oven coal gas. The novel liquid discharge device of coke oven coal gas comprises a conical cylinder body; the upper end of a cylindrical part of the conical cylinder body is provided with a gas discharge pipe; the upper end of the gas discharge pipe is connected with a coal gas discharge pipeline, and the lower end of the gas discharge pipe extends into the conical cylinder body; the upper end of one side of the cylindrical part of the conical cylinder body is provided with a gas inlet along the tangential direction; the gas inlet is connected with the coal gas pipeline leading to a coke oven; the inner wall of the cylindrical part of the conical cylinder body is provided with a circulation ammonia water automatic spraying device connected with an external circulation ammonia water pipeline; the bottom conical part of the conical cylinder body is provided with a sewage discharge port connected to an underground tank through a sewage discharge pipeline. The novel liquid discharge device of coke oven gas provided by the invention separates gas from a carried solid and liquid mixture, prevents corrosion of the coal gas pipeline by the deposition of the solid and liquid mixture, also keeps the temperature of a liquid discharge system by utilizing residual heat of the circulation ammonia water effectively, does not need to consume energy sources such as steam, electricity energy and the like additionally, lowers the running cost, and is beneficial to the safe and stable running of the whole system.

Description

technical field [0001] The invention relates to a liquid discharge device, in particular to a novel liquid discharge device for coke oven gas. Background technique [0002] The 650-750°C raw coal gas from the coke oven is cooled by spraying circulating ammonia water and cooled by the primary gas cooler, and the temperature drops to 21-23°C. Most of the water vapor, tar gas, naphthalene and solid particles contained in the gas are destroyed. It is condensed and separated, and at the same time dissolves part of the ammonia, hydrogen sulfide, hydrogen cyanide, etc. in the gas, and then enters the electric tar collector to further remove the tar in the gas, and then goes through desulfurization or directly into the gas blower to pressurize, and enters the sulfur Ammonium and other processes. [0003] During normal production, tar, water vapor, naphthalene, desulfurization liquid, and solid particles in the gas are likely to be caused due to the high temperature control of the p...

AI Technical Summary

Problems solved by technology

[0003] During normal production, tar, water vapor, naphthalene, desulfurization liquid, and solid particles in the gas are likely to be caused due to the high temperature control of the primary cooler, poor operation of the electric tar collector, and unreasonable control of the desulfurization liquid-gas ratio. High content, coke powder, coal powder, water vapor, desulfurization liquid, etc. are easy to mix and condense together to increase the particle diameter, especially when pressurized by a gas blower, under the action of centrifugal force, large particles are thrown to the casing and pipe wall, In addition, if the gas flow direction changes, under the action of gravity, it will deposit at the bottom of the pipeline behind the machine, block the pipeline, and increase the resistance of the gas system. The corrosive substances such as hydrogen sulfide and hydrogen cyanide contained in it will accelerate the corrosion of the gas pipeline and affect the gas Safe and Stable Operation of Purification Recovery System

[0004] At present, the coke oven gas liquid discharge device is mainly based on the gas water seal, which only discharges the liquid flowing at the bottom of the pipeline, and some large particles cannot be discharged, which still causes pipeline blockage.

Generally, after the gas pipeline is blocked, steam purging and circulating ammonia water spraying are often used to clean it, but none of them can fundamentally solve the problem of gas pipeline blockage, and waste energy, affecting the water-gas balance and heat balance in the gas.

Images