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Method for preparing high-performance solid desulfurizing agent by carbide slag slurry

A technology of calcium carbide slurry and desulfurizer, applied in the field of chemical engineering, can solve the problems of occupying large land and polluting the environment, and achieve the effect of strong desulfurization, high activity and fine particle size

Inactive Publication Date: 2008-04-30
国能英力特能源化工集团股份有限公司 +1
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Problems solved by technology

At present, calcium carbide slurry is generally treated by natural sedimentation or dehydration by pressure filtration, and then piled up and buried in a centralized manner. This treatment method has a series of social problems such as occupying a large amount of land and seriously polluting the environment, which is the fundamental factor restricting the production of acetylene by calcium carbide method. question

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  • Method for preparing high-performance solid desulfurizing agent by carbide slag slurry

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Embodiment Construction

[0011] The calcium carbide slurry discharged from the calcium carbide acetylene production line, 1. Firstly, use a cyclone separator for centrifugal separation, and then filter it with a water slurry filter, so as to separate the ferrosilicon, carbon and large particles of impurities in the calcium carbide slurry from the Slurry is separated. 2. A filter press is used to separate the solids and water in the calcium carbide slurry, and the slurry water is reused in the original production process, and the filter cake enters the next batching process. 3. Use the batching device to fully mix the high-efficiency anti-coagulation grinding aid, chemical desiccant and filter cake, and configure them evenly in proportion. 4. If necessary, use a gas-fired rotary kiln for further calcination and drying. 5. Use milling equipment and winnowing equipment for crushing and winnowing separation, and the separated coarse particles are returned to the crushing process. 6. Use a packaging mach...

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Abstract

The invention relates to a method of producing a highly-effective solid desulfurizer by carbide slag grout. The invention is characterized in that the carbide slag grout is centrifugally separated, filtered and filter-pressed, then a desiccating agent and a highly-effective anti-coalescing grinding aid are added to a gotten filter cake, and then the filter cake is ground, consequently the process is finished after being packed. The invention produces the highly-effective solid desulfurizer with high activity, high desulfurization and fine grain size by processing purifying, separation, tempering, drying, abrading, winnowing, packing and the like to calcium hydrate which is the main component of the carbide slag grout, thereby achieving the purpose of changing the waste into valuable, realizing the effect of recycling economy, simultaneously saving land resources and eliminating one serious factor of environmental pollution.

Description

technical field [0001] The invention relates to the technical field of chemical engineering, in particular to a method for preparing a high-efficiency solid desulfurizer by utilizing calcium carbide slag slurry. Background technique [0002] While using calcium carbide to produce acetylene, a large amount of industrial waste—calcium hydroxide aqueous solution slurry (commonly known as calcium hydroxide slurry) is also produced. At present, calcium carbide slurry is generally treated by natural sedimentation or dehydration by pressure filtration, and then piled up and buried in a centralized manner. This treatment method has a series of social problems such as occupying a large amount of land and seriously polluting the environment, which is the fundamental factor restricting the production of acetylene by calcium carbide method. question. Contents of the invention [0003] The purpose of the present invention is to overcome the defects of the above-mentioned prior art, an...

Claims

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Application Information

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IPC IPC(8): B01D53/50
Inventor 田继杰韵明生姜汉国刘远大杨学远郭会军
Owner 国能英力特能源化工集团股份有限公司
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