Natural circulation steam generation system and generation method for fused salt tower-type heat power generation

A technology of natural circulation and thermal power generation, which is applied in the steam generation method using heat carrier, steam generation, preheating, etc., can solve problems such as molten salt condensation, and achieve the effect of reducing investment and operating costs

Inactive Publication Date: 2018-11-30
HARBIN BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem that the existing steam generation system easily causes molten salt to condense, and to provide a natural circulation steam generation system that can be preheated so that the system can start in a cold state and use natural circulation steam for molten salt tower thermal power generation Generation system and method

Method used

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  • Natural circulation steam generation system and generation method for fused salt tower-type heat power generation

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Effect test

Embodiment 1

[0020] A natural circulation steam generation system for molten salt tower thermal power generation, which consists of: a circulation system 11 and a preheating system 12, said preheating system includes a circulating water pump 5 and a heater 6, and one end of said circulating water pump It is connected with the steam drum 3 through a pipeline, the other end of the circulating water pump is connected with the heater through a pipeline, and the heater is connected with the water supply end of the preheater 7 through a pipeline.

Embodiment 2

[0022] According to the natural circulation steam generation system for molten salt tower thermal power generation described in Embodiment 1, the circulation system includes the evaporator 13, the superheater 2, the steam drum and the preheater, and the The preheater is connected to the steam drum through valve A, part number: 9, the preheater is connected to the evaporator through valve B, part number: 8, and the evaporator is connected to the An ascending pipe 4 and a descending pipe 10 are arranged between the steam drums, and the steam drum is connected to the superheater through pipelines, and a valve C, part number: 1, is arranged on the superheater.

Embodiment 3

[0024] A generation method of a natural circulation steam generation system for molten salt tower thermal power generation, the method comprising the following steps:

[0025] (1) Preheating process;

[0026] Close valve A and open valve B, open valve C to a certain degree, turn on the heater and circulating water pump, the feed water passes through the preheater, passes through valve B to the evaporator, and passes through the rising pipe of the evaporator to the steam drum, and the water in the steam drum is The circulating water pump enters the heater for heating, and the heated water passes through the preheater, evaporator and steam drum to generate saturated steam, and the generated saturated steam enters the superheater, the system pressure gradually increases, and finally the saturated temperature is raised to the point where the molten salt can pass Enter the temperature to complete the preheating process;

[0027] (2) Cycle process;

[0028] Close the circulation p...

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Abstract

The invention discloses a natural circulation steam generation system and generation method for fused salt tower-type heat power generation. At stating initial stage of a steam generator, water supplytemperature is low, and fused salt is directly introduced into a system, so that the danger happens as the fused salt is easily coagulated. The generation system comprises a circulating system (1) and a preheating system (12), the preheating system comprises a circulating water pump (5) and a heater (6), one end of the circulating water pump is connected with a steam drum (3) through a pipeline,the other end of the circulating water pump is connected with the heater through a pipeline, and the heater is connected with a water supply end of a pre-heater (7) through a pipeline.

Description

Technical field: [0001] The invention relates to a steam generating system, in particular to a natural circulation steam generating system and a generating method for molten salt tower thermal power generation. Background technique: [0002] As a technical route of solar thermal power generation, molten salt tower solar thermal power generation has the characteristics of high concentration ratio and high conversion efficiency, and is considered to be an important method of solar thermal utilization. The molten salt tower thermal power generation heats the molten salt through the heat collection system, and then the hot molten salt exchanges heat with water through the steam generation system to generate steam, and the steam drives the steam turbine to do work to realize power generation. [0003] The steam generator mainly includes three-stage heat exchange equipment: preheater, evaporator (including steam drum), superheater. In the steam generation system, the feed water p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B1/06F22D1/00
CPCF22B1/06F22D1/003
Inventor 唐卉张明宝张福君李琪张小波李凤梅国金莲
Owner HARBIN BOILER
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