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Coal-water slurry gasification system and method for recovering coal-water slurry additives

A gasification system and additive technology, applied in the field of coal gasification, can solve problems such as waste and achieve the effect of saving gasification costs

Active Publication Date: 2021-06-22
ENN SCI & TECH DEV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, in the process of coal gasification, the additives and the coal water slurry are directly burned after being fed into the gasification furnace, resulting in a lot of waste

Method used

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  • Coal-water slurry gasification system and method for recovering coal-water slurry additives

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Embodiment Construction

[0027] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are some, not all, embodiments of the present invention. The specific embodiments described here are only used to explain the present invention, but not to limit the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention belong to the protection scope of the present invention.

[0028] Such as figure 1 As shown, a coal-water slurry gasification system provided by the present invention includes a pulping and conveying unit, an additive separation unit 8, a water removal unit 9, a gasification burner 10, a gasification furnace 11 and a collection tank 12. And the conveying unit includes a coal mill 3, a coa...

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Abstract

The invention relates to the technical field of coal gasification, and provides a coal water slurry gasification system and a method for recovering coal water slurry additives. Including pulping and conveying unit, additive separation unit, water removal unit, gasifier and collection tank, pulping and conveying unit includes coal mill, coal slurry tank and coal slurry feeding pump connected in sequence, coal slurry feeding The pump is connected to the additive separation unit, the additive separation unit is connected to the water removal unit, the water removal unit is provided with a water outlet and a coal outlet, the water outlet is connected to the collection tank, and the coal outlet is connected to the gasifier; The additive separation unit and the water removal unit are set up between the gasifier and the gasifier. The additive separation unit is used to destroy the adsorption connection relationship between the additive and the coal particles, so that the additive dissolves in water, and then the water with the additive dissolved in the coal is separated from the coal by the water removal unit. Separation of particles, recycling of additives, saving cost of gasification of coal water slurry.

Description

technical field [0001] The invention belongs to the technical field of coal gasification, and in particular relates to a coal water slurry gasification system and a method for recovering coal water slurry additives. Background technique [0002] At present, coal water slurry is mainly used in coal water slurry gasification technology. Coal water slurry is composed of coal powder with a certain particle size, water and additives in a certain proportion. It has good stability, fluidity and other properties, and is safe to store. , transportation and measurement are convenient, and can be transported over long distances. [0003] Since the coal-water slurry is required to have good stability and fluidity during storage and transportation, additives need to be added. However, in the process of coal gasification, the additives and the coal-water slurry are directly burned after being fed into the gasification furnace, resulting in a lot of waste. [0004] Therefore, how to recy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/48C10J3/72
CPCC10J3/48C10J3/72
Inventor 王向龙侯祥生马丽荣高明刘刚彭知顺付伟贤李克忠
Owner ENN SCI & TECH DEV
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