Residual heat reclaiming method, residual heat reclaiming system and used working fluid of absorption liquid

A technology of working fluid and absorbing liquid, which is applied in steam engine installations, machines/engines, mechanical equipment, etc., can solve the problems of high equipment cost and energy consumption, and achieve the effect of saving equipment investment, high energy density and energy saving

Inactive Publication Date: 2009-08-26
谷俊杰 +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These inventions also have the above mentioned problems due to the use of water, and it is necessary to use a separation tower to separate ammonia-water, and the equipment cost and energy consumption are high

Method used

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  • Residual heat reclaiming method, residual heat reclaiming system and used working fluid of absorption liquid
  • Residual heat reclaiming method, residual heat reclaiming system and used working fluid of absorption liquid
  • Residual heat reclaiming method, residual heat reclaiming system and used working fluid of absorption liquid

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Embodiment

[0037] In this embodiment, low-temperature waste heat at 90° C. to 120° C. discharged from an oil refinery with an annual output of 5 million tons of oil products of Huabei Petrochemical Company is used as a heat source to introduce the waste heat recovery cycle system of the present invention. The equipment used in the system and its working conditions are as follows:

[0038] 1. As the heater of the regenerator: shell-and-tube heat exchanger, the absorption liquid is anhydrous ammonia-thiocyanate sodium salt solution and goes through the tube side.

[0039] Selection parameters:

[0040] 1) The inlet temperature of the heat source is 120°C-130°C, and the outlet temperature of the heat source is 90°C;

[0041] 2) NH 3 - The inlet and outlet temperatures of the sodium thiocyanate solution are 86°C and 110°C respectively;

[0042] 3) heat transfer ≥ 425.18kW;

[0043] 4) Fixed tube plate type, the design pressure is 2.5MPa, and the maximum working pressure is 1.8MPa;

[00...

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Abstract

The invention discloses an absorption-type residual heat power generation or heat acquisition and drive power using method under condition of a low-temperature heat source. The invention also relates to an absorption-type residual heat reclaiming system and a used gas-salt working fluid. The low-temperature heat source obtained from industrial waste heat is used as a heating working medium so that a working fluid of absorption liquid consisting of a salt absorbent and ammonia gas or carbon dioxide absorbed agent from an absorber forms an absorbent and a high-pressure overheated absorbed agent in a regenerator through the heat exchange process under the heating condition; the gasified overheated absorbed agent enters a turbine machine to provide energy for producing power through a turbine expansion step; the produced power can directly drive a power generating unit for power generation or connection with other power drive equipment for providing the needed power; and the produced power can be also used as a heat source and is transported to heat exchange equipment for heating. The low pressure absorbed agent completing the heat release process is exhausted from the turbine step, returns the absorption step and is re-contacted with the absorbent from the regeneration step to form the absorption liquid; and the absorption liquid reenters the next thermodynamic circulation process.

Description

technical field [0001] The invention relates to an absorption waste heat recovery method, in particular to a method for absorption waste heat power generation or heat collection under the condition of a low-temperature heat source and as a driving force. The present invention also relates to the absorption waste heat recovery system and the used gas-salt working fluid, such as ammonia-salt working fluid. Background technique [0002] In industrial production, a large amount of industrial waste heat is generated every day, such as flue gas and process waste heat. This kind of heat is usually considered low-grade, because recovery is technically difficult and cannot be realized, so a large amount of waste heat resources are often wasted. There is a large amount of low-temperature waste heat discharged in petrochemical enterprises, such as the large-flow hot water discharged from heavy oil catalytic devices, usually with a water temperature of about 120°C. For the waste heat ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K25/06F01K25/10
Inventor 谷俊杰詹姆斯·谷程瑞英刘存柱李胜昌
Owner 谷俊杰
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