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System for automatically adjusting temperature of smoke at outlet of waste heat boiler

A technology of flue gas temperature and waste heat boiler, which is applied in steam superheating, lighting and heating equipment, steam generation, etc., and can solve problems such as insufficient utilization

Inactive Publication Date: 2013-02-20
CHENGDU HOT NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiency that the flue gas temperature at the exit of the waste heat boiler cannot fully utilize the waste heat, the technical problem to be solved by the present invention is to provide an automatic adjustment system for the flue gas temperature at the exit of the waste heat boiler that can make full use of the waste heat

Method used

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  • System for automatically adjusting temperature of smoke at outlet of waste heat boiler
  • System for automatically adjusting temperature of smoke at outlet of waste heat boiler
  • System for automatically adjusting temperature of smoke at outlet of waste heat boiler

Examples

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Embodiment

[0022] The SP waste heat boiler at the kiln tail of a new dry-process cement production line is modified by applying the present invention. The flue gas from the outlet of the SP waste heat boiler at the kiln tail is sent to the raw meal mill 18 of the raw meal system, and the steam is sent to the steam turbine 19 for power generation.

[0023] Such as image 3 As shown, in the waste heat boiler outlet flue gas temperature automatic adjustment system of the present invention, the boiler 1 is provided with a flue gas inlet 15, a flue gas outlet 16, and a superheating device 20 located between the flue gas inlet 15 and the flue gas outlet 16 and corresponding The water supply port 13 and the steam outlet 14, the superheating device 20 is composed of the evaporator 3, the superheater 4, the drum 5 and the economizer 2, the feed water enters the drum 5 through the water supply port 13 and the economizer 2, and evaporates The steam formed by the steam generator 3 and the superheate...

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Abstract

The invention discloses a system for automatically adjusting the temperature of smoke at an outlet of a waste heat boiler by completely utilizing waste heat. In the system, the boiler is provided with a smoke inlet, a smoke outlet, a superheater, a corresponding water inlet and a corresponding steam outlet; the superheater is arranged between the smoke inlet and the smoke outlet; a second superheater, a corresponding second water inlet and a corresponding second steam outlet are arranged at the back of the superheater; the second steam outlet is connected with a steam supply pipeline provided with a reducing valve; low-pressure steam generated by the second superheater can be output to a steam turbine and the like through the steam supply pipeline to generate electricity; a heat requirement sensor is arranged at the back of the smoke outlet; and a control device of the reducing valve is connected with the heat requirement sensor and can adjust the temperature of the waste heat boiler outlet randomly in a certain range according to the change of heat requirements of the system. The system can be applied to various waste heat boilers.

Description

technical field [0001] The invention relates to automatic adjustment of flue gas temperature at the outlet of waste heat boiler system. Background technique [0002] At present, the new dry process cement production waste heat SP boiler system uses the waste heat of cement kiln tail flue gas as the heating source. The boiler is equipped with a flue gas inlet, a flue gas outlet, and a superheating device located between the flue gas inlet and the flue gas outlet. Corresponding to the water supply port and the steam outlet, the superheating device is composed of an evaporator, a superheater, a drum and an economizer. Feed water enters the boiler drum through the water inlet and economizer, forms steam through the evaporator and superheater, and then is sent out from the steam outlet for power generation by the waste heat power station, and the flue gas after heat exchange is supplied to the raw material system. [0003] The SP waste heat boiler system has the following disadv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F22G7/00
Inventor 赵学明李炎饶荣肖峰陈叶滔
Owner CHENGDU HOT NEW ENERGY TECH
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