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System and process for coal powder preparation

A pulverized coal preparation and process technology, which is applied in the pulverized coal preparation system and process field, can solve the problems of inability to meet the requirements of fine pulverized coal particle size, low efficiency of pulverizing system, large coal pulverized particle size, etc., and achieve simple structure and improved grinding Efficiency and floor space savings

Active Publication Date: 2012-07-25
CHINA COAL RES INST CCRI ENERGY SAVING TECH CO LTD
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  • Application Information

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Problems solved by technology

[0002] Coal pulverization in the general sense is actually a kind of coal crushing and crushing processing, which belongs to the primary stage of coal pulverization. The processed coal powder has a large particle size, which can only be used for traditional industrial boilers, and cannot meet the needs of high-efficiency industrial pulverized coal boilers. Particle size requirements for fine coal powder
Moreover, most of the current general coal pulverization processes are open-type operation, the dust pollution is relatively serious, and the efficiency of the pulverization system is low

Method used

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  • System and process for coal powder preparation
  • System and process for coal powder preparation

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Embodiment Construction

[0012] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0013] Such as figure 1 As shown, the pulverized coal preparation system of the present invention includes three parts: a crushing system 1 , a drying system 2 and a grinding system 3 .

[0014] The crushing system 1 includes a coal receiving hopper 11 and a hammer crusher 12 , the discharge port at the bottom of the coal receiving hopper 11 has a gate valve, and the discharge port of the coal receiving hopper 11 is connected to the feed port of the crusher 12 .

[0015] The drying system 2 includes a drum type drying kiln 21, the feed port of the kiln head of the drying kiln 21 communicates with the crusher 12 through a closed belt conveyor 4, and an electromagnetic separator 5 is arranged above the closed belt conveyor 4. The discharge port at the bottom of the drying kiln 21 is connected to the feed port of a raw coal bunker 22 , the air inlet at ...

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Abstract

The invention relates to a system and a process for coal powder preparation, which is characterized in that the system for coal powder preparation comprises a crushing system, a drying system and a grinding system; the crushing system comprises a coal receiving hopper and a crushing machine connected with the coal receiving hopper; the drying system comprises a drying kiln, and the drying kiln iscommunicated with the crushing machine through a belt conveyer; the drying kiln is connected with a raw coal silo; an air inlet opening at the charging side of the drying kiln is connected with a hotblast furnace and the hot blast furnace is connected with an air blower; an air outlet opening at the top of the drying kiln is connected with a first induced draft fan and an air outlet opening of the first induced draft fan is respectively connected with a hot air pipeline and a dust collector between the drying kiln and the hot blast furnace; the grinding system comprises a vibration feeder anda coal grinding mill connected with the vibration feeder, wherein the vibration feeder is communicated with the raw coal silo through a first bucket elevator; the coal grinding mill is connected witha cyclone separator, an ascension pipe of the cyclone separator is connected to the storage silo through a second bucket elevator; and the cyclone separator is connected with a second induced draft fan and connected to the coal grinding mill. The invention not only can be applied to establish the independent coal powder preparation plant, but also can be applied in front of an industrial coal powder boiler as the stokehole powder-making unit.

Description

technical field [0001] The invention relates to a coal powder preparation system and process in front of a furnace, in particular to a coal powder preparation system and process with low dust pollution and high efficiency. Background technique [0002] Coal pulverization in the general sense is actually a kind of coal crushing and crushing processing, which belongs to the primary stage of coal pulverization. The processed coal powder has a large particle size, which can only be used for traditional industrial boilers, and cannot meet the needs of high-efficiency industrial pulverized coal boilers. The particle size requirements for fine coal powder. Moreover, most of the current general coal pulverization processes are open-type operation, the dust pollution is relatively serious, and the efficiency of the pulverization system is low. Contents of the invention [0003] In view of the above problems, the object of the present invention is to provide a pulverized coal prepa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L5/00
Inventor 王乃继纪任山冀飞周建明何海军范玮肖翠微张帆
Owner CHINA COAL RES INST CCRI ENERGY SAVING TECH CO LTD
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