Comprehensive recycling method for coal slime of space furnace
A technology of coal slime and coal furnace, which is applied in the field of comprehensive recycling of aerospace furnace coal slime, can solve problems such as pollution and unstable carbon content in filter cakes, and achieve the effect of solving environmental pollution
Inactive Publication Date: 2015-04-08
安徽恒宇环保设备制造股份有限公司
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Problems solved by technology
[0003] The purpose of the present invention is to provide a method for comprehensive recovery and utilization of coal slime, to solve the comprehensive utilization of ash discharge in the coal gasification process of aerospace furnaces, to solve the pollution problem on site, and to aim at the carbon content of filter cakes discharged when aerospace furnaces burn different raw coals Unstable, comprehensive utilization of it to achieve the purpose of energy saving and emission reduction, and can bring certain economic benefits
Method used
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Experimental program
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Effect test
Embodiment Construction
[0012] A method for comprehensive recycling and utilization of coal slime from an aerospace furnace, characterized in that in the first step, the ash discharge from the coal furnace is sprayed with water, and the ash water is led into the ash water tank;
[0013] In the second step, the gray water in the gray water tank is sent to the balance centrifuge through the mud pump to reduce its water content to the range of 50-60%;
[0014] In the third step, the gray water in the second step is collected through the filtrate through the pipeline, and the filtrate is sent to the filtrate clarifier through the pump to return the filtrate to the coal slag water system for recycling, and the filter cake is sent to the intermediate storage silo through the belt conveyor;
[0015] In the fourth step, the filter cake is continuously stirred in the middle storage silo to prevent the occurrence of water and ash stratification. The filter cake enters the inlet of the filter cake conveying pump...
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The invention discloses a comprehensive recycling method for coal slime of a space furnace. The comprehensive recycling method includes spraying ash discharge of a coal furnace by water, and guiding grey water to a grey water tank; delivering the grey water into a vacuum filter by a slime pump, and lowering the water content of the grey water to 50-60%; collecting filtrate, obtained after filtering of the grey water, to a filtrate clarification tank through a pipeline, delivering back the filtrate to a coal furnace slag water system by a pump to recycle the filtrate, and conveying filter cakes to an intermediate storage bin by a belt conveyor; enabling the filter cakes to enter an inlet of a filter cake conveying pump by a feed device arranged on the lower portion of the intermediate storage bin, supplying high-pressure oil by a power pack to drive the filter cake conveying pump to reciprocate, and feeding the filter cakes subjected to pressurization to a boiler for combustion through a boiler feeder. By the comprehensive recycling method, comprehensive utilization of the ash discharge during coal gasification of the space furnace is achieved, spot pollution problems and the problem of instability in carbon content of the discharged filter cakes due to use of different feed coal by the space furnace are solved, the filter cakes are utilized comprehensively to achieve energy conservation and emission reduction, and a certain economic benefit can be achieved.
Description
technical field [0001] The invention relates to the technical field of coal slime treatment, in particular to a method for comprehensive recycling and utilization of coal slime in aerospace furnaces. Background technique [0002] Coal quality varies greatly in different parts of the country, so many domestic coal chemical companies require gasification technology to adapt to a wide range of coal types, especially the gasification technology needs to be adapted to "three high coals", but the difference in coal quality will also bring gas. The problem that the carbon content of the furnace fly ash is too high (25-40%). At present, the factory's treatment method for grey water is mainly to remove most of the water through a vacuum filter and then make a filter cake for stacking and takeaway, which causes a lot of environmental pollution and energy waste. SUMMARY OF THE INVENTION [0003] The purpose of the invention is to provide a method for comprehensive recovery and utili...
Claims
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Login to View More IPC IPC(8): B03B5/48F23C10/22
Inventor 王标卢志泊
Owner 安徽恒宇环保设备制造股份有限公司