Two-stage cement kiln multi-source solid waste coupling pyrolysis gasification method and device and application thereof

A cement kiln, two-stage technology, applied in the field of two-stage cement kiln multi-source solid waste coupled pyrolysis gasification, can solve the problems of single type, difficulty in rational utilization, cement clinker composition and temperature fluctuation, etc., to achieve The effect of improving the quality of cement

Active Publication Date: 2022-01-07
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problems existing in the existing cement kiln co-processing solid waste technology that the types of solid waste to be disposed of are relatively single, the quality of cement clinker is easily affected by composition and temperature fluctuations, and waste gas and waste residue are difficult to use rationally. Multi-source Solid Waste Coupling Pyrolysis Gasification Method, Device and Application of Segment Cement Kiln

Method used

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  • Two-stage cement kiln multi-source solid waste coupling pyrolysis gasification method and device and application thereof
  • Two-stage cement kiln multi-source solid waste coupling pyrolysis gasification method and device and application thereof

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Embodiment 1

[0069] Such as figure 1 As shown, it is a device for realizing a two-stage cement kiln multi-source solid waste coupling pyrolysis gasification method disclosed in this embodiment, an inorganic solid waste storage bin 15 and an inorganic solid waste storage bin 2, and an inorganic solid waste transport vehicle 1 , Inorganic solid waste storage bin 2, batching metering room 3, raw material mill 4, raw meal homogenization storehouse 5, feeding metering room 6 and preheater 7, rotary kiln 9, grate cooler 10, clinker bin 11 are sequentially connected , the organic solid waste transport vehicle 12, pulverizer 13, organic solid waste pretreatment system 14, organic solid waste storage bin 15, raw material batching metering room 16, pulverizer 17, gasifier 18, supersonic high-temperature airflow The mill 18 and the rotary kiln 9 are connected sequentially. The gasifier 18 is a double-layer gasifier. The bottom of the gasifier 18 is provided with at least two outlets. The jet mill 19...

Embodiment 2

[0073] Using the device described in Example 1 to carry out a two-stage cement kiln multi-source solid waste coupling pyrolysis gasification method, including:

[0074] Taking oily sludge and municipal sludge as examples to treat organic solid waste, the calorific value of oily sludge is 17.9MJ / kg, and the calorific value of municipal sludge is 10.42MJ / kg. Oily sludge contains a large amount of SiO 2 , Municipal sludge has been flocculated with iron salts, and has a large amount of iron elements that are beneficial to cement production. After drying and crushing, the two are mixed and granulated in a granulator at a ratio of 71.5:28.5, and the particle size is 30mm to 50mm. , the calorific value is above 3000kcal.

[0075] Waste incineration fly ash, aluminum ash, desulfurized gypsum and calcium carbide slag are used as inorganic solid waste. Waste incineration fly ash is pretreated and dechlorinated by washing with water. The composition of various solid wastes is shown in T...

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Abstract

The invention relates to the field of cement production through solid waste treatment, in particular to a two-stage cement kiln multi-source solid waste coupling pyrolysis gasification method and device and application thereof, and aims to solve the problems that according to an existing cement kiln solid waste co-processing technology, the type of solid waste is single, the quality of cement clinker is prone to being affected by component and temperature fluctuation, and waste gas and waste residues are difficult to reasonably utilize. The method comprises the following steps: proportioning organic solid wastes according to heat values and components, and proportioning gasified solid components and preheated inorganic solid wastes. While the solid waste disposal scale and variety are increased, the influence of temperature fluctuation of a smoke chamber of the rotary cement kiln caused by component difference of the solid waste in the co-disposal process is reduced, the calcination temperature of the cement clinker is stabilized, and therefore the yield and quality of the cement clinker are guaranteed.

Description

technical field [0001] The invention relates to the field of solid waste treatment and production of cement, in particular to a two-stage cement kiln multi-source solid waste coupling pyrolysis gasification method and its device and application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] The development of various modern engineering constructions has a large demand for cement. Cement enterprises need a large amount of materials in the cement production process, among which coal is the main one. Coal is a non-renewable resource. With the increase of usage, there is a certain energy crisis. Cement kiln co-processing is a new method of waste disposal for cement enterpr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/64C10J3/72C04B7/147C04B7/24C04B7/26C04B7/32C04B7/42C10J3/00
CPCC10J3/64C10J3/005C10J3/72C04B7/24C04B7/42C04B7/26C04B7/147C04B7/421C04B7/428C04B7/32C10J2300/0946C10J2300/1207Y02P20/129
Inventor 毛岩鹏张嘉政王文龙宋占龙王旭江李敬伟
Owner SHANDONG UNIV
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