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Treating technology of slack coal

A technology for processing process and crude gas, applied in the field of coal chemical industry, can solve the problems of complex process, relatively large investment, low energy efficiency, etc.

Active Publication Date: 2015-09-30
宋军 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] It can be seen that due to the complex process of coal chemical industry, long process, relatively large investment, energy efficiency is lower than that of oil and natural gas, and large-scale coal chemical production can easily cause pollution and ecological problems in local production areas.

Method used

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  • Treating technology of slack coal
  • Treating technology of slack coal
  • Treating technology of slack coal

Examples

Experimental program
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Effect test

Embodiment 1

[0064] The data in this embodiment is the optimal condition in this implementation, and does not limit the scope of application of the present invention. The data in this embodiment are all provided on the basis of 1 ton of raw material.

[0065] In this example, a certain long-flame coal is used as the raw material for the clean and efficient production method of all resources in the fluidized carbonization-gasification coupling process. In this example, the fine coal raw material with a particle size of 0-3 mm is preferred (other particle size ranges are not limited). The particle size range is the optimal range of the coal’s overall cost. The high-temperature solid heat carrier of about 950°C from the heat carrier settler passes through the downcomer, and the hydrogen-rich transport gas (coal gas produced by gasification, dry distillation gas, or other The extracted hydrogen-rich gas) is sent to the coal char mixing pipe, and mixed with the raw raw coal from the raw material...

Embodiment 2

[0074] The process of this embodiment is basically the same as that of Embodiment 1, the main difference is that dry distillation and gasification are operated at high pressure, and the pressure is increased to 2MPa; the delivery gas is pure hydrogen; the gas fuel of the direct combustion medium generator is changed to gasified crude gas (contains less methane).

[0075] Adopt the raw material identical with embodiment 1, compared with embodiment 1 effect is as follows:

[0076] 1 ton of coal produces 166.99kg of tar, and the yield of Gejin oil increases from 87% to 113.6%;

[0077] 1 ton of coal produces crude gas 1120m 3 , retort gas 97m 3 , methane in the total gas product increases by 45m 3 , suitable for the production of coal-based natural gas; embodiment 1 is suitable for the production of coal gas synthesis products due to the combustion of dry distillation gas with high methane content. Table 1 Raw coal data table

[0078]

[0079] Table 2 Tar distillation ran...

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Abstract

The invention provides a treating technology of slack coal. The treating technology comprises the following steps: in the presence of conveying gas, when a high temperature solid heat carrier and slack coal present a liquid state, dry distillation is carried out to obtain oil gas and semi-coke; after being washed by atomized oil drops, the oil gas is recycled, and tar and dry distillation gas are separated from dry distillation water; an incomplete reaction is carried out on the semi-coke and gasified media to obtain crude gas and remaining semi-coke; settling separation is carried out on the crude gas and the remaining semi-coke to obtain crude gas and fine coke breeze; the crude gas and the fine coke breeze are separated to obtain crude gas; the crude gas is subjected to heat transfer to obtain gasified crude gas, wherein the gasified media are prepared according to the following method: after burning a part of the dry distillation gas or the gasified crude gas, air, oxygen-enriched air and pure oxygen, vaporizing the dry distillation water to obtain steam and oxygen. According to the treating technology, slack coal is treated through fluidized retorting-gasification coupling technology, so that the utilization ratio of slack coal is high, the tar is small in dust content, and the coal gasification technology is low in water consumption.

Description

technical field [0001] The invention relates to the technical field of coal chemical industry, in particular to a process for treating fine coal. Background technique [0002] The resource endowment characteristics of my country's rich coal, lack of oil and little gas have profoundly affected the energy structure. Coal accounts for more than 60% of primary energy consumption, and coal used for direct combustion accounts for about 73% of my country's total coal consumption. Coal power generation accounts for 50%, industrial boilers account for 15%, industrial furnaces account for 8%, and coal consumption in the coal chemical industry accounts for 10% of my country's total coal consumption. More than 50% of my country's coal resources are low-rank coals, which are widely distributed in Shaanxi, Mongolia, Xinjiang and other regions, and have high water content. In the calculation of energy efficiency for direct combustion of coal, the low-level calorific value is generally used...

Claims

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Application Information

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IPC IPC(8): C10B53/04C10B57/00
Inventor 宋佰盈
Owner 宋军
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