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Energy-saving evaporation process and system thereof

A process system and process technology, applied in evaporation, general water supply saving, heating water/sewage treatment, etc., can solve the problems of high investment cost and maintenance cost, complex structure of steam compressor, low carrying ratio, etc., and achieve simple operation and maintenance. Easy to operate, the system is simple and easy to operate, and the effect is fully utilized

Inactive Publication Date: 2012-09-12
天津壹帆水务有限公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the relatively complex structure of the steam compressor, the investment cost and maintenance cost are relatively high; for the steam jet pump, due to its low carrying ratio (the ratio of the amount of driving steam to the amount of secondary steam sucked), there is always some residual secondary steam , Moreover, if the driving steam used contains liquid droplets, it is easy to wear the nozzle and reduce the efficiency. This evaporation mode is represented by the MVR evaporator

Method used

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  • Energy-saving evaporation process and system thereof
  • Energy-saving evaporation process and system thereof
  • Energy-saving evaporation process and system thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0013] Refer to attached figure 1 : The process system is composed of evaporator 1, heat exchanger 2, water injector 3, vapor-liquid separator 4, high-pressure water pump 5, circulating water pump 6, raw material liquid a and condensate liquid c. Among them, the raw material liquid a is connected to the feed liquid inlet of the heat exchanger 2 through the conveying pipeline, the feed liquid outlet of the heat exchanger 2 is connected to the feed liquid inlet of the evaporator 1 through the conveying pipeline, and the concentrated liquid of the raw material liquid a is passed through the circulating water pump 6 at the same time It is connected to the feed liquid inlet of evaporator 1, and the secondary steam output from evaporator 1 is connected to the high-temperature and high-pressure water injection circulation system through the water ejector. The water injection circulation system includes high-pressure water pump 5, water ejector 3 and vapor-liquid separator 4. The cond...

Embodiment 2

[0016] Refer to attached figure 2 : According to the actual situation, part of raw steam b can be supplemented when the system is running. The process system consists of evaporator 1, heat exchanger 2, water injector 3, vapor-liquid separator 4, high-pressure water pump 5, circulating water pump 6, raw material a , raw steam b and condensate c. Among them, the raw material liquid a is connected to the feed liquid inlet of the heat exchanger 2 through the conveying pipeline, the feed liquid outlet of the heat exchanger 2 is connected to the feed liquid inlet of the evaporator 1 through the conveying pipeline, and the concentrated liquid of the raw material liquid a is passed through the circulating water pump 6 at the same time It is connected with the feed liquid inlet of the evaporator 1, and the secondary steam output from the evaporator 1 is connected with the high-temperature and high-pressure liquid injection cycle system through the water injector. The liquid in the liq...

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Abstract

The invention provides an energy-saving evaporation process and an energy-saving evaporation system, belonging to secondary steam waste heat recovery in the field of high-efficiency recycling. The energy-saving evaporation process and the energy-saving evaporation system can be widely applied to sewage and wastewater treatment, desalination of sea water, solution concentration in chemical production and other industrial departments. The main process comprises the following steps: enabling raw material solution to absorb heat in an evaporator and to boil and vaporize to generate secondary steam, pressurizing and heating the secondary steam through a high-temperature high-pressure water jet circulating system, taking the secondary steam as heating steam to be returned to the evaporator, releasing the heat in the evaporator, and heating the raw material solution so as to boil and vaporize the raw material solution to generate the secondary steam; and heating the steam and condensing the steam into condensate so as to recycle the heat, discharging the condensate into a heat exchanger from the evaporator to perform heat exchange with the raw material solution, so that temperature of the raw material solution is raised, heat of the condensate is released, and the condensate is discharged. By adopting the process, waste heat in the secondary steam can be effectively utilized, the operating cost is reduced, and lots of energy is saved.

Description

technical field [0001] A high-efficiency energy-saving evaporation process and its system belong to the field of waste heat recovery and high-efficiency recycling of secondary steam. Specifically, it relates to a process for recovering and utilizing the waste heat of secondary steam in an evaporation process to realize thermal energy recycling, and can be widely used in industrial sectors such as sewage, wastewater treatment, seawater desalination, and solution concentration in chemical production. Background technique [0002] Evaporation is the process of vaporizing a solvent by heating to obtain a concentrated solution or solid solute. Evaporation can be performed under normal pressure, reduced pressure or increased pressure. At present, the evaporation types commonly used in industry include single-effect evaporation, multi-effect evaporation, heat pump evaporation and decompression flash evaporation. There are four types of evaporation, each with advantages and disadva...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/04B01D1/00B01D1/14C02F103/08
CPCY02A20/124Y02P70/10
Inventor 王学科张曙光王志刚魏峰崔晓芳
Owner 天津壹帆水务有限公司
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