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Gas cooler, gasification furnace, and integrated gasification combined cycle device for carbon-containing fuel

A technology for gas coolers and power generation devices, which is applied in the gasification of granular/powdered fuels, gas turbine devices, and gasification processes, etc., can solve the problems of blockage of gas flow paths, high equipment costs, and increased volume of heat exchangers, etc. Achieving the effect of suppressing the reduction of heat exchange efficiency

Active Publication Date: 2014-01-15
MITSUBISHI POWER LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] Especially in the case of repeatedly inserting and pulling out the soot blower to the tube group of the gas cooler in the pressure vessel, ancillary equipment such as a highly reliable pressure seal is required, and there is a problem that the cost of the equipment is greatly increased.
[0017] In addition, when the accumulated particles are sintered like ashes, as long as the ambient temperature is in the sintering temperature range, if the frequency setting of the dust removal frequency is not always properly maintained, not only the heat conduction efficiency will be reduced, but also there will be problems caused by accumulation. The sintering of particles causes the blockage of the gas flow path in the gas cooler to be an important factor.
[0018] Therefore, in order to reduce the frequency of dust removal (for example, every 8 hours), on the premise that the heat transfer efficiency will be reduced due to accumulation, the number of pipes installed in the heat exchanger is set in advance, so there is a problem that the volume of the heat exchanger increases. question

Method used

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  • Gas cooler, gasification furnace, and integrated gasification combined cycle device for carbon-containing fuel
  • Gas cooler, gasification furnace, and integrated gasification combined cycle device for carbon-containing fuel
  • Gas cooler, gasification furnace, and integrated gasification combined cycle device for carbon-containing fuel

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Embodiment 1

[0048] A gas cooler for a coal gasifier according to an embodiment of the present invention will be described with reference to the drawings.

[0049] figure 1 It is a schematic diagram of the coal gasification furnace concerning this Example. figure 2 It is an arrangement diagram of the tubes of the heat exchanger according to the present embodiment. image 3 It is an arrangement diagram of tubes of a conventional heat exchanger. Figure 4 It is a figure which shows the accumulation state of the particle|grains to the tube of the heat exchanger concerning a conventional technique. Figure 5 It is a schematic diagram of arrangement of tube groups of the heat exchanger according to this embodiment. Figure 6 It is a schematic diagram of arrangement of tube groups of a conventional heat exchanger. Figure 7 It is a graph showing the relationship between SL / d and the coke accumulation ratio (%). Figure 8 It is a schematic diagram of the conventional coal gasification furna...

Embodiment 2

[0113] Hereinafter, an embodiment of the combined coal gasification power generation facility according to the present embodiment will be described based on the drawings. Figure 9 It is a schematic diagram of the combined coal gasification power generation device according to this embodiment. Such as Figure 9 As shown, for example, an integrated coal gasification combined cycle (IGCC; Integrated Coal Gasification Combined Cycle) 1 using coal as fuel mainly includes a coal gasifier 3 , a gas turbine facility 5 , and a steam turbine facility 7 .

[0114] On the upstream side of the coal gasifier 3 , a coal supply facility 10 for supplying pulverized coal to the coal gasifier 3 is provided. The coal supply facility 10 includes a pulverizer (not shown) for pulverizing raw coal into pulverized coal of several μm to several hundreds of μm, and the pulverized coal pulverized by the pulverizer is stored in a plurality of hoppers 11 , 11 . . . .

[0115] The pulverized coal stored ...

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Abstract

A gas cooler (3b) cools produced gas (2) gasified by partially oxidizing carbon-containing fuel by a gasification furnace (3a) in a pressure vessel (30) on the outlet side of the produced gas (2), and the distance (SL) between pipes of a pipe group in a heat exchanger (36) provided in the gas cooler (3b) is set such that the pipes are in contact with or close to each other in the gas flow direction of the produced gas (2). When the pipes are brought into contact with or close to each other, particles entrained in the gas flow are deposited as deposited particles only in a recessed portion between the pipes, thereby suppressing a decrease in heat exchange efficiency due to the deposition of the particles.

Description

technical field [0001] The invention relates to a gas cooler of a carbon-containing fuel gasification furnace, a gasification furnace and a carbon-containing fuel gasification composite power generation device. Background technique [0002] Conventionally, in order to improve the power generation efficiency of, for example, a coal-fired power plant, a coal gasification combined power generation device (IGCC; Integrated Gasification Combined Cycle) has been developed and put into practical use. [0003] The coal gasification composite power generation device has the following advantages: utilization of abundant coal resources; higher thermal efficiency than existing pulverized coal thermal power generation, less emission of air pollutants such as carbon dioxide; coal ash as glassy slag And the discharge, the volume becomes smaller, etc. Therefore, the combined coal gasification power generation facility is being developed as a technology that will become the main force of fu...

Claims

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Application Information

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IPC IPC(8): C10J3/46F22B1/18
CPCC10J3/485C10J3/723C10J3/78C10J3/86C10J2300/0906C10J2300/093C10J2300/1671C10J2300/1675C10J2300/1807C10J2300/1846F01K23/068F22B1/1815F22B1/1846Y02E20/16Y02E20/18Y02E20/30Y02P20/10Y02P20/129F01K23/10F02C3/22F23J15/06
Inventor 柴田泰成品田治
Owner MITSUBISHI POWER LTD
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