Biological coal desulfurization device and using method thereof

Abstract

The invention discloses a biological coal desulfurization device and a using method thereof. Rhodococcus erythropolis and thiobacillus ferrooxidans are mixed in a sulfuric acid environment at the pH value of 1-2, and inorganic sulfur in coal is removed by virtue of a biological reaction method. The biological coal desulfurization device mainly comprises a bacterium compound tank, a bacterium liquid metering pump, a pH value measuring instrument, a stirrer, a bio-reactor, a material delivery machine, a water delivery pump, a grinder, a liquid level transmitter, an acid and iron fetching tank, adrying machine, a washing machine, a filter, an air blower, a slurry pump, a PLC (Programmable Logic Controller) control system, an aeration coil pipe, a temperature transmitter, a sulfuric acid metering pump, a sulfuric acid storage tank, a rhodococcus erythropolis culture tank and a thiobacillus ferrooxidans culture tank. The operating steps and using method of the device are given. The desulfurization time is greatly shortened, the desulfurization efficiency is high, the coal slurry and coal-washing wastewater can be recycled, emission of three wastes is avoided, and the biological coal desulfurization device is suitable for industrialized treatment and production.

Description

technical field [0001] The invention belongs to the technical field of desulfurization equipment, and in particular relates to a coal biological desulfurization device and a method for using the device, which uses microorganisms or enzymes contained in the device to catalyze sulfur-containing compounds to realize coal desulfurization and a method for using the device. Background technique [0002] Biological desulfurization is the use of microorganisms or the enzymes it contains to catalyze sulfur-containing compounds (FeS 2 , H 2 S, organic sulfur, etc.), release the sulfur in it to realize the method of coal desulfurization. Coal pre-combustion biological desulfurization has the characteristics of safety, environmental protection, low consumption and high efficiency, but the coal biological desulfurization method has the disadvantages of long operation period and low desulfurization efficiency, which is not conducive to large-scale industrial treatment. For example, the ...

AI Technical Summary

Problems solved by technology

Coal pre-combustion biological desulfurization has the characteristics of safety, environmental protection, low consumption and high efficiency, but the coal biological desulfurization method has disadvantages such as long operation period and low desulfurization efficiency, which is not conducive to large-scale industrial treatment

For example, the ZL2014101802599 patent discloses that the desulfurization period of the biological desulfurization method of coal is as long as dozens of days, while the desulfurization rate is only 57.8%, which is difficult to carry out large-scale industrial treatment

The traditional biological desulfurization technology is incomplete, and the sulfide contained in the desulfurization reactor is not washed, which makes it easy to cause fatal damage to the desulfurization microorganisms and reduces the desulfurization rate; the oxygen content in the desulfurization liquid cannot be controlled due to the inability to control the input amount of oxygen during desulfurization. Too high or too low, microorganisms decompose sulfur compounds to generate more acidic substances, resulting in poor living environment for microorganisms, affecting the survival of microorganisms, low desulfurization efficiency, and long desulfurization cycle

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