Pulverized coal preparation system and method

A pulverized coal preparation and pulverized coal technology, which is applied in the field of coal chemical industry, can solve the problems of high energy consumption and achieve the effects of reducing investment, avoiding leakage and improving production safety

Active Publication Date: 2017-09-15
BEIJING PETROCHEM ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the moisture content of crushed coal fluctuates, the circulation system needs to adjust the air discharge, dry air supplement, inert gas supplement and hot blast stove load, which consumes a lot of energy

Method used

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  • Pulverized coal preparation system and method

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Effect test

Embodiment 1

[0048] See figure 1 , which is a schematic diagram of the pulverized coal preparation system provided in this embodiment. The flow direction of the material is marked in the figure. Gas heater 7, coal powder collector 2, rotary feeder 3, fiber separator powder 4, coal storage bin 5, circulation fan 9, air preheater 10 and inert gas preheater 8; the coal pulverizer The circulating gas heater 7 is a steam heat exchanger; the pulverized coal collector 2 is a gas-solid separator; the air preheater is an electric heater; the inert gas preheater is an electric heater;

[0049] The coal pulverizer 1 is provided with a pulverized coal inlet, a circulating gas inlet and a circulating gas outlet; the circulating gas outlet is connected to the material inlet of the pulverized coal collector 2 through a pipeline, and the solids of the pulverized coal collector 2 The outlet is connected to the pulverized coal storage bin through a pipeline; the gas outlet of the pulverized coal collector ...

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Abstract

The invention provides a pulverized coal preparation system and method. The pulverized coal preparation method comprises a coal pulverizer, a coal pulverizer circulating gas heater, a pulverized coal collector, a pulverized coal storage bin and a circulating fan, wherein the coal pulverizer is provided with a pulverized coal inlet, a circulating gas inlet and a circulating gas outlet; the circulating gas outlet is connected to a material inlet of the pulverized coal collector, and a solid outlet of the pulverized coal collector is connected with the pulverized coal storage bin; a gas outlet of the pulverized coal collector is connected with a gas inlet of the fan, and a gas outlet of the fan is connected with a gas inlet of the heater; a gas outlet pipeline of the heater is divided into two branches, one branch is connected with the circulating gas inlet of the coal pulverizer, and the other branch is connected to a pipeline between the coal pulverizer and the pulverized coal collector; and a safety emptying pipeline, an inert gas supply pipeline and a compressed air supply pipeline are connected to a connection pipeline between the fan and the heater. By adoption of the system, qualified pulverized coal can be prepared under energy-saving, safe and clean conditions.

Description

technical field [0001] The invention relates to a coal powder preparation system and method, that is, a system and a method for pulverizing and drying crushed coal to make coal powder meeting moisture and particle size requirements, and belongs to the field of coal chemical industry. Background technique [0002] The pulverized coal gasification and coal direct liquefaction processes in the coal chemical industry have strict requirements on the moisture content and particle size distribution of pulverized coal. Therefore, it is necessary to develop a pulverized coal preparation system and method so that the obtained pulverized coal can meet the process requirements. [0003] A coal grinding and drying process is disclosed in CN100486711C. In this case, the crushed coal in the crushed coal bunker and the inertized drying medium heated by the hot blast stove are sent into the coal mill, and the crushed coal is ground into coal powder At the same time, it is dried by the dryin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23K1/00
CPCF23K1/00
Inventor 王文飞常宇舜米渊耿高峰马静梁长涛
Owner BEIJING PETROCHEM ENG
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