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A slag cooling device suitable for dry slag discharger and its application

A dry-type slag discharger and slag cooling technology are applied in the field of electric power equipment to achieve the effect of strengthening the cooling effect and improving the economy.

Active Publication Date: 2017-01-18
GUODIAN SCI & TECH RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Purpose of the invention: The purpose of the present invention is to solve a series of problems caused by the use of natural wind to cool the slag in the dry slag discharge system, and to provide a slag cooling device suitable for the dry slag discharge machine and a dry slag discharge machine including the slag cooling device

Method used

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  • A slag cooling device suitable for dry slag discharger and its application
  • A slag cooling device suitable for dry slag discharger and its application
  • A slag cooling device suitable for dry slag discharger and its application

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Embodiment Construction

[0025] Dry slag dischargers including slag cooling, see Figures 1 to 4 , including dry slag machine body 9, cooling device 8 and control system 10.

[0026] The body 9 of the dry slag discharger includes a housing 9-1 and a shut-off door 9-3, a grill 9-4, a conveyor belt 9-2 and a cleaning chain 9 arranged in the housing 9-1 from top to bottom. -5;

[0027] The cooling device 8 includes a clean flue gas flow regulating valve 8-2, a clean flue gas temperature adjustment bypass 8-3, a clean flue gas fan bypass 8-4, a set of low-temperature clean flue gas nozzles 8-6, and net flue gas outlets connected in sequence. Flue gas fan 8-1, low-temperature clean flue gas pipeline 8-5, clean flue gas used for cooling slag is extracted from the flue at the outlet of desulfurization tower 6 by clean flue gas fan 8-1, a group of low-temperature clean flue gas nozzles 8-6 They are respectively connected to the low-temperature clean flue gas pipeline 8-5 through the valve 8-7, the clean flu...

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Abstract

A slag cooling device applicable to dry slag discharge machines provided by the invention comprises a cooling device (8) and a control system (10). According to the slag cooling device applicable to dry slag discharge machines, low-temperature purified flue gas after desulfurization by a flue gas desulfurization device replaces natural wind as a cooling medium of slag and a dry slag discharge machine, and the amount of low-temperature purified flue gas feeding into the dry slag discharge machine is adjusted automatically according to the temperatures of a main heater and a reheater of a boiler, the temperature of slag, and the pressures in the lower part of a dry bottom hopper and inside the dry slag discharge machine. Therefore, the situation in which a large amount of unorganized natural wind enters the hearth to affect normal combustion organizations is avoided, and the economic performance of unit operation is improved while cooling of slag and the dry slag discharge machine is realized.

Description

technical field [0001] The invention belongs to the field of electric equipment, in particular to a slag cooling device suitable for a dry slag discharger and its application. Background technique [0002] Dry slag removal technology is a technology that uses a special steel belt (conveyor belt) to transport the air-cooled slag. The working process of this technology is that an appropriate amount of natural wind enters from the lower part of the dry slag discharger under the action of negative pressure in the furnace, and cools the upper part of the steel belt and the falling slag in the throat through the steel belt and the throat area of ​​the boiler countercurrently, and the high temperature The slag is cooled to cold slag that can be directly stored and transported, and the heat is sent into the furnace. Compared with the widely used wet slag discharge system, the dry slag discharge technology has the following advantages: 1. Using natural wind as the cooling slag mediu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23J1/06F23J15/00
Inventor 陈国庆刘建民蔡培黄启龙戴维葆
Owner GUODIAN SCI & TECH RES INST
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