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Method and device for regenerating liquid desiccant

A liquid dehumidification and regeneration device technology, which is applied in the direction of separation methods, chemical instruments and methods, spray evaporation, etc., can solve the problems of high-grade energy consumption, complex operation and maintenance, and large equipment structure, etc., and achieves the convenience of regeneration operation and device The effect of maintenance, dehumidification energy consumption reduction, mass transfer effect improvement

Inactive Publication Date: 2010-08-25
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In order to solve the problems of large equipment structure, complex operation and maintenance, and high-grade energy consumption in the existing liquid desiccant regeneration technology, a regeneration device for liquid desiccant provided by the present invention includes a heat source, a solution pump and a tank type One end of the tank container is provided with a regenerative air inlet distributor, the other end is connected with the induced draft fan, and the inside of the tank container is provided with demisting parts and atomizers.
Atomizers can be pressure nozzles or airflow nozzles

Method used

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  • Method and device for regenerating liquid desiccant

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Embodiment 1

[0029] The embodiment flow process shown in accompanying drawing 1 is the flow process of countercurrent mode. The main structure of the device of this embodiment is a tank container (3), the length-to-diameter ratio is 2:1, and the top inside is provided with demisting parts (6) and atomizer (7) sequentially from top to bottom; the middle section is The liquid desiccant atomization and gas-liquid contact space, the bottom is a liquid storage space (8); the lower part is also provided with an air inlet distributor (4). The defogging parts are filled with structured metal fillers.

[0030] The liquid desiccant used in this embodiment is an aqueous solution of lithium chloride, and the regeneration inlet concentration is 32.65%. The atomizer is a pressure nozzle. When the operating pressure is 0.65MPa and the operating liquid-gas ratio is 1.2, the atomizer can break the liquid desiccant into liquid particles with an average particle size of about 60μm. The solution is heated t...

Embodiment 2

[0032] The embodiment process shown in accompanying drawing 2 is the flow process of downstream mode. The main structure of the device in this embodiment is a tank container (3) with a length-to-diameter ratio of 2:1. The wall of the tank container is designed with an interlayer as the regeneration air outlet channel. The top inside is an atomizer (7); the middle section is a space for liquid desiccant atomization and gas-liquid contact, and the bottom is a liquid storage space (8). After being heated by an external heat source (1), the liquid desiccant to be regenerated is delivered to the atomizer (7) in the tank container (3) through the solution pump (2). The air inlet distributor (4) is at an angle of 30° to the axial direction, and the airflow enters along the tangential direction of the barrel wall, and after contacting with the liquid desiccant inside the tank container (3) for heat and mass exchange, the air flows from the bottom of the tank container (3). Above the ...

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Abstract

The invention provides a method and a device for regenerating a liquid desiccant, which belongs to the field of air moisture adjustment. The device comprises an external heat source (1), a solution pump (2) and a pot-type container (3), wherein one end of the pot-type container (3) is provided with a regenerated air intake distributor (4) while the other end is connected with a draught fan (5); and a demisting component (6) and an atomizer (7) are arranged in the pot-type container (3). The method for regenerating the liquid desiccant comprises the following steps of: heating the liquid desiccant by the external heat source (1), and then delivering the heated liquid desiccant to the pot-type container (3) by the solution pump (2); atomizing the liquid desiccant by the atomizer (7) to form tiny fog drops; and performing heat and mass exchange on the fog drops and the air entering from the air intake distributor (4) to realize the regeneration of the liquid desiccant. The method and the device for regenerating the liquid desiccant significantly improve the regeneration effect, and the one-way solution process concentration change can be promoted by 1.5 to 3 percent; the heat utilization efficiency is high and reaches over 70 percent; and the device has a simple structure and is convenient to operate and maintain.

Description

technical field [0001] The invention belongs to the field of air humidity regulation, in particular to a method and device for regenerating a liquid dehumidification agent in a liquid absorption dehumidification system, and is particularly suitable for a heat-driven liquid absorption dehumidification system. The regeneration device of the present invention is combined with the air dehumidifier in the liquid absorption dehumidification system to realize the regeneration of the dilute desiccant solution; together they constitute a cycle process of dehumidification (solution dilution) and regeneration (concentration) in the dehumidification system. Background technique [0002] The reasonable allocation of indoor air dehumidification and temperature regulation is an important way for buildings to save energy. Existing dehumidification methods mainly include mechanical compression dehumidification, liquid absorption dehumidification, solid adsorption dehumidification (such as wh...

Claims

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Application Information

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IPC IPC(8): B01D1/18B01D53/26
Inventor 郑丹星熊超武向红
Owner BEIJING UNIV OF CHEM TECH
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