Coal blending method suitable for coal used in shell pulverized coal pressurization gasification

A pulverized coal pressurized gasification, Shell's technology, applied in the coal blending field of Shell pulverized coal pressurized gasification coal, can solve the problems of high ash content and high cost of raw coal, achieve the purpose of increasing calorific value and fixed carbon content, and improving production The effect of increasing the load and effective gas volume

Active Publication Date: 2012-09-19
GUIZHOU TIANFU CHEM
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AI Technical Summary

Problems solved by technology

[0008]The existing method to solve the high ash content of shell pulverized coal pressurized gasification raw coal is mainly to use coal washing or clean coal to reduce the ash content of coal, but this method is costly , It is necessary to build another coal washing workshop

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take Guizhou coal with high ash content, the blending ratio is 95%, petroleum coke-Shandong Yantai Longkou petroleum coke, the blending ratio is 5%, and the blending is uniform. The heat Qnet,ar, and the fixed carbon FCar received were 21.08%, 6029Kcal / Kg, and 67.33%, respectively. At this time, the effective gas output per ton of standard coal of the gasifier is 1668.13NM 3 / t standard coal, the oxygen consumption per ton of standard coal is 649.23NM 3 / t standard coal. CO in effective gas composition is 66%, H 2 17%.

Embodiment 2

[0029] Take Guizhou coal with high ash content, the blending ratio is 90%, petroleum coke-Shandong Yantai Longkou petroleum coke, the blending ratio is 10%, and the blending is even. The heat Qnet, ar, and the received base fixed carbon FCar are 20.10%, 6159Kcal / Kg, and 69.65%, respectively. At this time, the effective gas output per ton of standard coal of the gasifier is 1710.57NM 3 / t standard coal, the oxygen consumption per ton of standard coal is 643.25NM 3 / t standard coal. CO in effective gas composition is 66%, H 2 18%.

Embodiment 3

[0031] Take Guizhou coal with high ash content, the blending ratio is 84%, petroleum coke-Shandong Yantai Longkou petroleum coke, the blending ratio is 16%, and the blending is even. The heat Qnet, ar, and the received base fixed carbon FCar are 18.73%, 6228Kcal / Kg, and 68.85%, respectively. At this time, the effective gas output per ton of standard coal of the gasifier is 1781.74NM 3 / t standard coal, the oxygen consumption per ton of standard coal is 638.43NM 3 / t standard coal. CO in effective gas composition is 67%, H 2 18%.

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Abstract

The invention relates to a coal blending method suitable for coal used in shell pulverized coal pressurization gasification. According to the method, coal of which the ash content is more than 21.08 percent is mixed with petroleum coke, and after the coal and the petroleum coke are uniformly mixed, the ash content in the mixture is less than 21.08 percent. The blended coal can improve the effective gas yield of tons of standard coal equivalent for shell pulverized coal gasification, reduce the oxygen consumption of the tons of standard coal equivalent and change CO and H2 components in effective gas to ensure that the effective gas is well utilized by an ammonia / alcohol co-production device, and also reduces the load of an ash and slag treatment device for a shell pulverized coal gasification device. By the method, inferior coal with high ash content in areas of Guizhou is effectively utilized, and the method has remarkably practical significance for stable, efficient and economic operation of pulverized coal pressurization gasification, has important social benefit for realizing the diversification of pulverized coal pressurization gasification raw materials and reasonably utilizing coal resources and meets the coal utilization requirement of pulverized coal pressurization gasification liquid slag-tap furnaces.

Description

technical field [0001] The invention relates to a coal blending method, in particular to a coal blending method suitable for shell pulverized coal pressurized gasification coal. Background technique [0002] Shell pulverized coal pressurized gasification technology is currently the world's advanced second-generation coal gasification technology, which has remarkable characteristics such as wide adaptability of coal types, large single-series capacity, high gasification temperature, long operation period, and good environmental benefits. (Increase process introduction) [0003] The raw coal is crushed and sent to the coal mill by the transportation facility. In the coal mill, the raw coal is ground into coal powder (by mass, 90% of which has a particle size of <100μm) and dried. The coal powder is often pressed into the coal powder warehouse, pressurized The pulverized coal bin and feed bin are used to send the pulverized coal to the nozzle of the gasifier by high-pressur...

Claims

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Application Information

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IPC IPC(8): C10J3/46C10J3/72
CPCC10J2300/093C10J3/506C10J2300/0943C10J2300/0906
Inventor 何浩明杨三可郭丹李华杨锦成李发中
Owner GUIZHOU TIANFU CHEM
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