Biomass boiler slag separating machine

A biomass boiler and slag technology, which is used in solid separation, separation of solids from solids by air flow, chemical instruments and methods, etc., can solve problems such as insufficient enrichment rate, loss of utilization value, and physical heat loss of slag.

Inactive Publication Date: 2014-11-26
SHENYANG INST OF ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unburned large pieces of biomass fuel will float on the slag pool, and when it accumulates too much, it will prevent the slag from entering the slag pool and affect normal production. Therefore, it needs to be salvaged mechanically or manually, and then put into the boiler for combustion after drying.
The water in the slag pond contains potassium elements leached from the slag, because t...

Method used

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  • Biomass boiler slag separating machine

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Embodiment

[0026] The biomass boiler slag separation device provided by the present invention is tried out on a 75t / h combined grate steam boiler, and is installed on the outlet of the slag cooler. The fuel is a mixture of rice straw, rice husk and broken plywood. Among them, the rice straw is mixed with soil, and the industrial analysis results are 14.17% of total moisture, 66.33% of volatile matter, 4.57% of fixed carbon, and 14.93% of ash content. After 1 kg of rice straw is ash, it contains 22.8 grams of K element; the industrial analysis result of rice husk is Total moisture %, volatile matter 69.3%, fixed carbon 14.9%, ash content 10.8%; plywood industrial analysis results: total moisture 8.2%, volatile matter 36.7%, fixed carbon 49.3%, ash content 5.8%. When the slag separation device is not used, the slag contains a large amount of burnt large biomass and sticky coke, which can only be landfilled as hazardous waste. 11.3Kg of bulk biomass was manually sorted out of 100Kg of slag...

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Abstract

The invention discloses a biomass boiler slag separating machine which is composed of a tilted string vibration sieve, a ratchet wheel rolling sieve, a fine slag hopper, a coke button hopper, a large biomass block hopper and a protection plate. The string vibration sieve is composed of a flow guide plate, a plurality of tension nuts, a plurality of tension bolts and a plurality of strings. The ratchet wheel rolling sieve is composed of a plurality of ratchet wheels. The fine slag hopper is arranged below the string vibration sieve. The coke button hopper is arranged below the ratchet wheel rolling sieve. The large biomass block hopper is arranged on the lower portion of an outlet of the ratchet wheel rolling sieve. The string vibration sieve is fixed to the ratchet wheel rolling sieve through the protection plate. The biomass boiler slag separating machine has the advantages that fine boiler slag rich in potassium and coke buttons in biomass boiler slag are separated from large biomass blocks and stored in the different hoppers, concentrated landfill processing is carried out on the coke buttons, the landfill cost and landfill conveying cost are saved, large biomass blocks which are insufficiently burned can be fed into a boiler to be burned again, fuel is saved, boiler efficiency is improved, and the fine boiler slag rich in potassium can be used as farmland fertilizer.

Description

technical field [0001] The invention relates to a separation machine, in particular to a separation machine for slag produced by biomass boiler combustion, and belongs to the technical field of particle separation. Background technique [0002] Fossil energy sources such as coal, oil, and natural gas provide energy and power for the development of human society, but also cause great harm to the living environment of humans, such as greenhouse effect, NOx emissions, SO2 emissions, and dust pollution. At the same time, human society is also facing the problem of fossil energy depletion. Therefore, seeking to develop new energy sources and realizing the sustainable development of society has been paid more and more attention by countries all over the world. Biomass energy, as a renewable clean energy, has a good development prospect. The National Academy of Sciences of the United States clearly stated in "Energy Transformation 1985-2010": "By 2010, the energy obtained from la...

Claims

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Application Information

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IPC IPC(8): B07B9/00
Inventor 王启民丁飞王宝石衣云龙张小辉
Owner SHENYANG INST OF ENG
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