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Spiral slag-cooling machine for high-temperature high-pressure fluidized bed gasification furnace

A fluidized bed gasifier and spiral slag cooler technology, which is applied in the direction of granular/powder fuel gasification, etc., can solve the problems of easy damage to the spiral seal, poor operating conditions, gas leakage of the pressurized gasification system, etc. Achieve the effect of improving sealing reliability, small sealing pressure difference, and solving easy damage

Inactive Publication Date: 2018-09-11
江苏天沃综能清洁能源技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the traditional normal pressure or low pressure fluidized bed gasifier adopts the spiral slag cooler with water as the cooling medium and the motor as the driving motor. In actual production, this spiral slag cooler is used in the pressurized flow In the slagging process of the chemical bed pulverized coal gasifier, the operating condition is poor, mainly as follows: (1) the screw seal is easily damaged, and the sealing reliability is poor; (2) the screw blade cannot be processed online after being stuck, which may easily lead to gasification The overall shutdown of the device; (3) The failure of the screw sealing parts will easily lead to the leakage of flammable gas in the pressurized gasification system, causing serious safety hazards such as occupational safety and health injuries to personnel and fire and explosion of process equipment

Method used

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  • Spiral slag-cooling machine for high-temperature high-pressure fluidized bed gasification furnace

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In the spiral slag cooling machine for high temperature and high pressure fluidized bed gasification furnace of this embodiment, the power drive device is composed of a hydraulic drive motor 11 and a reducer 10, the hydraulic drive motor 11 is connected with the reducer 10, and the reducer 10 is connected by a spline The shaft is connected with the spiral rotating shaft 5, the hydraulic drive motor 11 and the reducer 10 are supported on the rear end bearing 9, the hydraulic drive motor 11, the reducer 10 and the rear end bearing 9 are arranged in the rear end pressure-resistant shell 12, and the hydraulic drive The motor 11 is driven and controlled by an additional hydraulic pump station system, the hydraulic drive motor 11 is a quantitative motor, and the hydraulic pump station system is controlled by a variable pump or a proportional valve.

Embodiment 2

[0035]In the spiral slag cooling machine for high temperature and high pressure fluidized bed gasification furnace of this embodiment, the power drive device is composed of a hydraulic drive motor 11 and a reducer 10, the hydraulic drive motor 11 is connected with the reducer 10, and the reducer 10 is connected by a spline The shaft is connected with the spiral rotating shaft 5, the hydraulic drive motor 11 and the reducer 10 are supported on the rear end bearing 9, the hydraulic drive motor 11, the reducer 10 and the rear end bearing 9 are arranged in the rear end pressure-resistant shell 12, and the hydraulic drive The motor 11 is driven and controlled by an additional hydraulic pump station system. The hydraulic drive motor 11 is a double-displacement motor, and the hydraulic pump station system is controlled by a variable pump or a proportional valve.

Embodiment 3

[0037] In the spiral slag cooling machine for high temperature and high pressure fluidized bed gasification furnace of this embodiment, the power drive device is composed of a hydraulic drive motor 11 and a reducer 10, the hydraulic drive motor 11 is connected with the reducer 10, and the reducer 10 is connected by a spline The shaft is connected with the spiral rotating shaft 5, the hydraulic drive motor 11 and the reducer 10 are supported on the rear end bearing 9, the hydraulic drive motor 11, the reducer 10 and the rear end bearing 9 are arranged in the rear end pressure-resistant shell 12, and the hydraulic drive The motor 11 is driven and controlled by an additional hydraulic pump station system. The hydraulic drive motor 11 adopts a stepless variable motor, which can realize stepless speed regulation through the motor variable.

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Abstract

The invention discloses a spiral slag-cooling machine for a high-temperature high-pressure fluidized bed gasification furnace, which comprises a spiral conveying cylinder body, wherein the spiral conveying cylinder body is arranged between a front-end pressure-resistant shell and a rear-end pressure-resistant shell; the front-end pressure-resistant shell is internally provided with a rotating joint, and the rear-end pressure-resistant shell is internally provided with a driving device; a spiral rotating shaft, wherein both end parts of the spiral rotating shaft can rotatably pass through the spiral conveying cylinder body and are respectively connected with the rotating joint and the driving device; the front-end pressure-resistant shell and the rear-end pressure-resistant shell are respectively provided with an inert gas inlet and an inert gas outlet. By adjusting the sealing pressure in the front-end pressure-resistant shell and the rear-end pressure-resistant shell, the pressure difference is controllable, the accurate control of the pressure difference between both sides of the sealing surface is realized, and the pressure difference does not change along with the change of theoperation pressure on the slag side, the machine effectively solves the problem of easy damage of the sealing of the spiral slag-cooling machine due to high pressure difference between the both sidesof the sealing under the high-temperature and high-pressure working conditions, and also reduces the abrasion and avoids the leakage of inflammable gas.

Description

technical field [0001] The invention relates to a slag cooling machine, in particular to a spiral slag cooling machine for a high-temperature and high-pressure fluidized bed gasification furnace. Background technique [0002] At present, coal gasification technologies that are mature and industrially applied mainly include fixed-bed coal gasification technology, fluidized-bed coal gasification technology and entrained-bed coal gasification technology. The advantages of good heat and mass transfer in the furnace, wide application of coal types, and low environmental pollution have attracted widespread attention. In the fluidized bed pressurized coal gasification device, how to realize the smooth discharge and cooling of high temperature and high pressure solid ash is an important link and key technology in this technology. [0003] In order to ensure the continuity and stability of the solid-state slagging operation of the fluidized bed gasifier under high temperature and hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/52C10J3/56
CPCC10J3/52C10J3/56
Inventor 廖兵何银高王福明康啸琦杨占春马如宏黄鹏
Owner 江苏天沃综能清洁能源技术有限公司