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Ash scavenger for domestic waste incinerator

A technology for municipal solid waste and incinerators, which is applied in the direction of inorganic non-surface-active cleaning compositions, etc., can solve the problems of inapplicability of waste incinerators, etc., and achieve the effects of prolonging the safe operation period, reducing the intensity of ash accumulation and improving the operation efficiency.

Inactive Publication Date: 2009-07-08
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] After patent retrieval, the published patents "90105541.7", "200410026749.X", and "200510041561.7" related to boiler dust removal agents are all aimed at conventional coal-fired boilers, and are not suitable for waste incinerators, and cannot solve the problem of domestic waste incineration. Serious problem of ash in the heating area of ​​the furnace

Method used

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  • Ash scavenger for domestic waste incinerator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] First, take 55Kg of sodium chloride, 20Kg of sodium nitrate, 10Kg of borax, 5Kg of zinc oxide, and 10Kg of vermiculite, mix them and crush them until the particles with a fineness of less than 40 mesh account for more than 80%, add them to the mixer and stir evenly; dry the stirred mixture , the drying temperature is 100°C-150°C, and the drying time is 10-20 minutes; finally, the dried mixture is granulated to make granules with a particle diameter of 1mm-2mm.

Embodiment 2

[0044] First take 58Kg of sodium chloride, 18Kg of sodium nitrate, 13Kg of borax, 4Kg of zinc oxide, and 7Kg of vermiculite, mix them and crush them until the particles with a fineness of less than 40 mesh account for more than 80%, add them to the mixer and stir evenly; dry the stirred mixture , the drying temperature is 100°C-150°C, and the drying time is 10-20 minutes; finally, the dried mixture is granulated to make granules with a particle diameter of 1mm-2mm.

Embodiment 3

[0046] First take 50Kg of sodium chloride, 21Kg of sodium nitrate, 12Kg of borax, 7Kg of zinc oxide, and 10Kg of vermiculite, mix them and crush them until the particles with a fineness of less than 40 mesh account for more than 80%, add them to the mixer and stir evenly; dry the stirred mixture , the drying temperature is 100°C-150°C, and the drying time is 10-20 minutes; finally, the dried mixture is granulated to make granules with a particle diameter of 1mm-2mm.

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Abstract

The invention discloses a deliming agent for a domestic garbage incinerator. The deliming agent comprises the following compositions in percentage by mass: 40 to 60 percent of sodium chloride, 15 to 25 percent of sodium nitrate, 5 to 15 percent of borax, 5 to 10 percent of zinc oxide and 5 to 10 percent of vermiculite, wherein the total content is 100 percent. The deliming agent can obviously reduce the dust intensity of a convection heating surface of the garbage incinerator, and make dust easily blown off so as to reduce the smoke evacuation temperature of the incinerator, improve the operating efficiency of the incinerator, and prolong the safe operation cycle of the incinerator.

Description

technical field [0001] The invention is applied to the field of municipal solid waste incineration, and in particular relates to a soot cleaning agent for domestic solid waste incinerators. Background technique [0002] During the operation of the waste incinerator, serious ash accumulation often occurs on the convective heating surface, which leads to problems such as deterioration of heat transfer, increase of exhaust gas temperature and reduction of incinerator efficiency, which affects the safety and economy of unit operation. In the worst case, the waste incinerator needs to be shut down once for about one month of operation to clean the ash. [0003] Dust accumulation: also known as sticky dirt, refers to the deposition of ash particles whose temperature is lower than the melting point of ash on the heating surface. It can be divided into high-temperature ash deposition and low-temperature ash deposition. The formation temperature of the former is within a certain ran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D7/14
Inventor 王树众张云月佟振霞郭继涛王海涛罗智宇刘晓峰
Owner XI AN JIAOTONG UNIV