Method for adjusting ISP (imperial smelting process) cooling chute waste heat boiler and power generation system

A waste heat boiler and cooling chute technology, applied in furnaces, waste heat treatment, furnace components, etc., can solve the problems of complicated operation, complex operation and huge system.

Inactive Publication Date: 2013-04-24
BEIJING CENTURY BENEFITS
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] This adjustment method needs to upgrade the entire heat exchanger, and the operation is more complicated; the chute boiler itself is an evaporator plus a superheater. If the heat exchange surface needs to be increased or decreased, the requirements for the entire steam-water matching, control system, and adjustment system are relatively high. High, the system is huge and complex; the temperature of superheated steam is relatively high (420°C), so the requirements for heat exchange tubes and thermal joints are relatively high, coupled with the frequent use of thermal joints, the life of thermal joints is very short, and regular replace

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  • Method for adjusting ISP (imperial smelting process) cooling chute waste heat boiler and power generation system
  • Method for adjusting ISP (imperial smelting process) cooling chute waste heat boiler and power generation system

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Embodiment Construction

[0021] The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0022] For ease of description, spatially relative terms such as "upper," "lower," "left," and "right" may be used herein to describe the relationship of one element or feature relative to another element or feature shown in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described ...

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Abstract

The invention relates to a method for adjusting an ISP (imperial smelting process) cooling chute waste heat boiler and a power generation system. The method specifically includes roughly adjusting load of the chute waste heat boiler by controlling the group number of chute heat exchangers, and finely adjusting the load of the chute waste heat boiler by controlling change of pressure of steam manifolds. The method can realize rough adjustment by means of valve control but also can realize fine adjustment by controlling the change of pressure of the steam manifolds, control accuracy is much higher than that of rough heat joint lifting type adjustment, and outlet temperature of meltwater of a lead and zinc chute can be controlled more accurately.

Description

technical field [0001] The invention relates to an energy-saving technology in the lead-zinc smelting process, in particular to an adjustment method and a power generation system for a lead-zinc separation cooling chute waste heat boiler in a closed blast furnace zinc smelting method (ISP method). Background technique [0002] The closed blast furnace zinc smelting method, also known as the ISP method, combines the two pyrometallurgical processes of lead and zinc, and is currently the most important pyrometallurgical zinc smelting method in the world. After the lead-zinc concentrate is mixed with flux, it is sintered and roasted on the sintering machine. The agglomerate and the preheated coke are put into the blast furnace together. The agglomerate is directly heated in the furnace to the temperature at which ZnO starts to be reduced, and ZnO is reduced to obtain zinc vapor. CO produced by combustion of steam and tuyeres 2 Together with CO gas, it enters the lead rain conde...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D17/00F01K11/02F01D15/10
CPCY02P10/265Y02P10/283Y02P10/25
Inventor 王婷婷陈恩鉴程珩
Owner BEIJING CENTURY BENEFITS
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