Feed coal pre-pyrolysis device for large-sized pulverized coal furnace

A pulverized coal furnace and raw material technology, which is used in coke ovens, direct heating dry distillation, special forms of dry distillation, etc., can solve the problem of high equipment cost, complex equipment structure, and the inability of gas generators to adapt to large and medium-sized, high-parameter pulverized coal furnaces. production application and other issues to achieve the effect of improving economic benefits

Inactive Publication Date: 2014-03-26
BEIJING LANTIAN LIYUAN SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned improved coal gas generating device cannot adapt to the polygeneration application of large and medium-sized, high-parameter pulverized coal furnaces widely used at present; the prior art equipment has complex structure and high equipment cost

Method used

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  • Feed coal pre-pyrolysis device for large-sized pulverized coal furnace

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specific Embodiment approach

[0017] The preferred embodiment of the raw coal pre-pyrolysis device for large pulverized coal furnaces of the present invention is:

[0018] Comprising a raw coal scuttle, the feed opening at the bottom of the raw coal scuttle is connected to the feed inlet at the top of the steam fluidized bed dryer through a rectangular star unloader, and the discharge port at the bottom of the steam fluidized bed dryer The spiral coal feeder is connected to the feed port in the middle of the combined briquette pyrolysis device, and the discharge port at the bottom of the combined briquette pyrolysis device is connected to the coal mill through a semi-coke conveying heat exchanger;

[0019] The lower part of the steam fluidized bed dryer is provided with a fluidized steam air distribution plate, the fluidized steam air distribution plate is connected to the steam pipeline, and the upper part of the steam fluidized bed dryer is provided with a secondary steam outlet, The secondary steam outl...

specific Embodiment

[0032] Such as figure 1 As shown, including the raw coal hopper 1, the raw coal enters the steam fluidized bed dryer 3 through the raw material coal hopper 1 through the rectangular star unloader 2, and the steam fluidized bed dryer 3 is equipped with a fluidized steam air distribution plate 4. The fluidized steam used in the steam fluidized bed dryer 3 comes from the low-grade steam discharged from the steam turbine of the power generation system; The secondary steam from the dedusting of the device 5 enters the secondary steam recovery system 6 for recovery and reuse.

[0033] The raw coal dried by the steam fluidized bed dryer 3 is sent to the combined briquette pyrolysis device 7 through the unloading device at the bottom of the steam fluidized bed dryer 8; the dried raw coal is in the combined briquette pyrolysis device 7 The high-temperature gas sent by the fluidized gas distribution plate 9 is fluidized, heated and pyrolyzed; the raw coal gas produced by coal pyrolysis...

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Abstract

The invention discloses a feed coal pre-pyrolysis device for a large-sized pulverized coal furnace. The device comprises a feed coal bucket, rectangular star-like unloading machines, a steam fluidized bed dryer, a screw coal feeder, a combined coal pyrolysis device, a semi-coke conveying heat exchanger and a coal mill, which are sequentially connected, wherein a fluidized steam air distribution plate is arranged at the lower part of the steam fluidized bed dryer, and a secondary steam outlet is formed in the upper part of the steam fluidized bed dryer, and is connected with a secondary steam recovery system through an electrical dust precipitator; a fluidized gas air distribution plate is arranged at the lower part of the combined coal pyrolysis device; an internal separator is arranged atthe inner middle part of the combined coal pyrolysis device, and is a multi-inlet cyclone separator; a gas outlet in the top of the internal separator is connected with the fluidized gas air distribution plate after the heat exchange of hot flue gas between a high-temperature heat pipe heat exchanger and a gas fired furnace. According to the device, a heat, electricity, oil and gas co-production system can be implemented, so that not only are the classified utilization of coal and the gradient utilization of heat energy realized to facilitate energy saving and emission reduction, but also the economic benefits of a thermoelectricity enterprise can be improved.

Description

technical field [0001] The invention relates to a coal pyrolysis device, in particular to a raw coal pre-pyrolysis device for a large pulverized coal furnace. Background technique [0002] At present, the heat, electricity, oil, and gas polygeneration projects used in large and medium-sized cities and comprehensive coal chemical production parks can produce gas, tar, and other chemical by-products while generating electricity and heating. A coal pyrolysis unit is required in this process. [0003] The Chinese patent ZL94119045.5 titled the process and equipment for generating gas at the front of the boiler, discloses the process of generating gas at the front of the boiler for the triple production of electricity, heat and gas, mixing coal and hot ash and the part of coal The thermal cracking is carried out at the upper part of the thermal cracking device and the coal gasification device, and the continuous thermal cracking of coal is carried out at the lower part of the th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/04C10B57/10C10B49/10C10B57/00
Inventor 王五一李炳熙金鲁田许振华姚锋姜森
Owner BEIJING LANTIAN LIYUAN SCI & TECH
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