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Two-stage cement kiln multi-source solid waste coupled pyrolysis gasification method and its device and application

A cement kiln, two-stage technology, applied in the field of two-stage cement kiln multi-source solid waste coupling 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: 2022-07-08
SHANDONG UNIV
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  • Summary
  • 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 coupled pyrolysis gasification method and its device and application
  • Two-stage cement kiln multi-source solid waste coupled pyrolysis gasification method and its device and application

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Embodiment 1

[0069] like figure 1 As shown, a device for realizing a two-stage cement kiln multi-source solid waste coupled pyrolysis gasification method disclosed in this embodiment, an organic 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 measuring room 3, raw material mill 4, raw meal homogenizing warehouse 5, feeding measuring room 6 and preheater 7, rotary kiln 9, grate cooler 10, clinker silo 11 are connected in sequence , the organic solid waste transportation vehicle 12, the pulverizer 13, the organic solid waste pretreatment system 14, the organic solid waste storage bin 15, the raw material batching measuring room 16, the pulverizer 17, the gasifier 18, the supersonic high temperature airflow The mill 18 and the rotary kiln 9 are connected in sequence, and the gasifier 18 is a double-layer gasifier. The bottom of the gasifier 18 is provided with at least two o...

Embodiment 2

[0073] Using the device described in Example 1 to carry out a two-stage cement kiln multi-source solid waste coupled 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, the calorific value of municipal sludge is 10.42MJ / kg, and the oily sludge contains a large amount of SiO 2 , The municipal sludge is flocculated by iron salt, and has a large amount of iron elements that are beneficial to cement production. After drying and pulverization, the two are mixed and granulated in a granulator in a ratio of 71.5:28.5, and the particle size is 30mm ~ 50mm , the calorific value is above 3000kcal.

[0075] The waste incineration fly ash, aluminum ash, desulfurized gypsum and calcium carbide slag are used as inorganic solid waste. The waste incineration fly ash is pretreated and dechlorinated by water washing. Various solid waste components are shown in Tabl...

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Abstract

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 coupled pyrolysis gasification method and its device and application. In order to solve the problems of the existing cement kiln co-processing solid waste disposal 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 the waste gas and waste residue are difficult to be reasonably utilized. A multi-source solid waste coupled pyrolysis gasification method in a segmental cement kiln and its device and application, including at least two compatibility, specifically including the proportioning of organic solid waste according to calorific value and composition, and the solid composition after gasification and the preheated solid composition. Inorganic solid waste is proportioned. While increasing the scale and type of solid waste disposal, it reduces the impact of temperature fluctuations in the cement rotary kiln flue chamber caused by the difference in the composition of solid waste during the co-processing process, and stabilizes the calcination temperature of cement clinker, thereby ensuring the safety of cement clinker. Yield and quality.

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 coupled pyrolysis gasification method and its device and application. Background technique [0002] The disclosure of information in this Background section is only for enhancement of understanding of the general background of the invention and should not necessarily be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art. [0003] The development of modern engineering construction has a large demand for cement. Cement enterprises need a lot of materials in the process of cement production, among which coal is the main material. Coal is a non-renewable resource. energy crisis. Cement kiln co-processing is a new method of waste disposal in cement enterprises. The solid waste that meets the requirements of e...

Claims

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Application Information

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Patent Type & Authority Patents(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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