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Solution active-crystallizing device for absorption-type chemical energy storage

A chemical energy storage and crystallization device technology, applied in the direction of solution crystallization, heat exchange cooling crystallization, etc., can solve the problems of deviation from the design operating conditions, work cannot be carried out, and crystals cannot be dissolved, so as to optimize the overall structure and operating efficiency, reduce The amount of crystallization and the effect of promoting rapid crystallization

Active Publication Date: 2019-02-19
CECEP CHANGZHOU INST FOR ENERGY SAVING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are two problems with this structure: 1) After standing for a long time, crystals will still be precipitated on the solution pump and spray pipeline, making the work impossible; 2) Since the crystal layer accumulated at the bottom of the solution tank is very dense, the energy release process The crystals cannot be completely dissolved in the medium, and after several times of energy storage and energy release, the concentration of the solution participating in the cycle gradually decreases, and gradually deviates from the design operating conditions

Method used

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  • Solution active-crystallizing device for absorption-type chemical energy storage
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  • Solution active-crystallizing device for absorption-type chemical energy storage

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Embodiment approach

[0033] The specific implementation of the active crystallization process and energy release process of the absorption energy storage device described in this patent is as follows:

Embodiment approach 1

[0034] Implementation Mode 1: Active Crystallization Energy Storage Process

[0035] Under the set vacuum pressure and heating temperature conditions, the concentration of solution 04 will reach the limit value. When heating continues, the absorbent in the solution will crystallize on the vertical wall and bottom of the tank with lower temperature. Accumulation occurs in the dead zone, which ultimately affects the energy storage and energy release effects of the system. Therefore, it is necessary to crystallize the working fluid of the absorbent in a set area with good heat exchange effect. Therefore, considering that the spiral tube heat exchanger 22 is immersed in the solution 04, the surface of the spiral tube heat exchanger 22 is rough and contains a large number of crystallization nuclei required for the crystallization process. When the concentration of solution 04 reaches the limit (crystal grains appear) in the solution energy storage process, cooling water can be qui...

Embodiment approach 2

[0036] Implementation Mode 2: Rapid Dissolving Crystal Energy Release Process

[0037] During the energy release process of the concentrated solution and absorbent crystals in the solution tank 02, there are two ways to dissolve the crystals quickly. One is to add an electric auxiliary heating belt 24 to the solution circulation loop 12 to heat the circulating liquid. To raise the temperature of the solution, the crystals are in solution. The second is that hot fluid can be passed into the spiral tube heat exchanger 22 to dissolve the crystals quickly. This process needs to open the valve 21, so that the refrigerant gas can be absorbed by the absorbent from the refrigerant tank 01 to the solution tank 02.

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Abstract

The invention discloses a solution active-crystallizing device for absorption-type chemical energy storage. The solution active-crystallizing device adopts a spiral tube heat exchanger to promote crystallization of a concentrated solution in a set area, it is achieved that the temperature of the concentrated solution is rapidly reduced at the same time, rapid crystallization of the solution is promoted, and the formation amount of crystallizing at the bottom and the vertical wall face of a tank body can be effectively reduced. Faults caused by solution circulation pipe crystallization are reduced, and the whole structure and the running efficiency of the equipment are further optimized; the solution active-crystallizing device can be better applied in development and utilization of low grade energy.

Description

technical field [0001] The invention relates to an active crystallization device based on absorption chemical energy storage, belonging to the fields of refrigeration, heating and energy storage. Background technique [0002] Absorption energy storage has the advantages of high energy storage density and small heat loss. It is an application technology with development potential in the field of refrigeration and air conditioning. It is important for the utilization of low-grade energy such as industrial waste heat and renewable energy and environmental protection. significance. [0003] Among the thermal energy storage technologies used in the past, sensible heat and latent heat storage technologies are widely used, and the technologies are relatively mature. Absorption chemical energy storage technology can make renewable energy such as solar energy and industrial waste heat energy be better applied in this system. The research on this technology started relatively late, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D9/02
CPCB01D9/0004
Inventor 张晓灵刘文杰靳庆麦姜丹丹
Owner CECEP CHANGZHOU INST FOR ENERGY SAVING
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