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Method and device for recovering waste heat of steam condensate of calcination plant

A technology of steam condensate and calcination workshop, which is applied in steam generation, lighting and heating equipment, sustainable manufacturing/processing, etc., and can solve problems such as energy waste and unused heat

Inactive Publication Date: 2010-06-30
山东海天生物化工有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Usually the calcined secondary flash steam pressure is 0.55MPa (absolute pressure), and there is still some heat in the pressurized condensate after the secondary flash, which causes energy waste

Method used

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  • Method and device for recovering waste heat of steam condensate of calcination plant
  • Method and device for recovering waste heat of steam condensate of calcination plant

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Embodiment Construction

[0016] The present invention will be further described below in combination with specific embodiments. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0017] As shown in the accompanying drawing, a method for reclaiming the waste heat of steam condensed water in the calcination workshop, the method is to flash again the steam condensed water from the secondary flash tank in the sodium bicarbonate calcination process of soda ash produced by the ammonia-soda method, And the flash steam is recycled.

[0018] After the steam condensate flashes again, the steam pressure is...

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Abstract

The invention discloses a method for recovering waste heat of steam condensate of a calcination plant, which comprises the following steps: carrying out secondary flashing on the steam condensate from a secondary flashing tank in the sodium bicarbonate calcination process for preparing calcined soda by an ammonia-soda process; recovering and reutilizing the flashed steam; and adopting a device for recovering the steam condensate of the calcination plant. The device comprises a condensate backflow liquid collection tank, one side of the condensate backflow liquid collection tank is connected with the secondary flashing tank, the top end of the condensate backflow liquid collection tank is connected with a secondary flashing second steam pipe, the top end of the secondary flashing tank is connected with a secondary flashing first steam pipe, one side of the secondary flashing tank is connected with a primary flashing steam condensate inlet pipe, the secondary flashing second steam pipe and the secondary flashing first steam pipe are connected in parallel with the a distillation steam main pipe, the bottom end of the condensate backflow liquid collection tank is connected with a condensate pump, and the secondary flashing tank, the condensate backflow liquid collection tank and the condensate pump are simultaneously connected to a condensate pipe of a condensate heat removal electric boiler plant. Thus, the steam is fully utilized, and the energy sources are saved.

Description

technical field [0001] The invention relates to the technical field of soda ash production, in particular to a method for recovering waste heat of steam condensed water in a calcination workshop and a device for realizing the method. Background technique [0002] Ammonia-soda ash production is an important method of soda ash production, which currently accounts for more than 50% of the total output of soda ash in my country. Because the production process itself needs to consume a lot of heat energy and generate a lot of heat. Therefore, some relatively large ammonia-soda factories in China are considering how to make full use of the heat generated in the production process of soda production, save energy and reduce consumption, reduce production costs and improve economic benefits. [0003] In the soda making process, the heat source of the distillation column in the evaporation and absorption section is composed of exhaust steam from compression, secondary flash steam fro...

Claims

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Application Information

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IPC IPC(8): F22B3/04C01D7/18
CPCY02P20/10Y02P20/129
Inventor 王笑镭刘素效姚旗
Owner 山东海天生物化工有限公司
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