CN1862150A - Solution regenerator using hot water as driving energy source - Google Patents
Solution regenerator using hot water as driving energy source Download PDFInfo
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- CN1862150A CN1862150A CNA2006100122606A CN200610012260A CN1862150A CN 1862150 A CN1862150 A CN 1862150A CN A2006100122606 A CNA2006100122606 A CN A2006100122606A CN 200610012260 A CN200610012260 A CN 200610012260A CN 1862150 A CN1862150 A CN 1862150A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Abstract
The present invention relates to a solution regeneration equipment using hot water as drive energy source, belonging to the field of energy source. The described equipment is composed of staged regeneration device and heat recovering device. The described staged regeneration device contains gas-liquid direct contact module, plate type heat exchanger and solution pump, and the described heat recovering device contains air wet heat recoverer for recovering exhaust heat quantity and plate type heat exchanger for recovering heat quantity of concentrated solution flowed out from said regeneration device. Said invention also provides the concrete working principle of said equipment and its concrete operation method.
Description
Technical field
The present invention relates to that a kind of field of heating ventilation air conditioning uses with the regenerative device of solution of hot water as drive energy, belong to energy field.
Background technology
The a large amount of cogeneration of heat and power central heating system of northern area can't move owing to no thermic load in summer at present, and cogeneration of heat and power in the summer power generating equipment that makes electric load the peak occur is shut down on the contrary, perhaps by pure power generation mode fallback.If can utilize this part heat drive air-conditioning, both saved the air-conditioning power consumption, cogeneration power plant is normally moved, increase generating capacity.So both can slow down the pressure of powering summer, and can improve energy utilization rate again, be the key that co-generation unit continues development.Adopting absorption refrigeration, is one of solution route.But the media of the long-distance transfer heat of cogeneration of heat and power is hot water (80 ℃), is that the Absorption Refrigerator energy utilization rate of power is very low with hot water, and COP is no more than 0.7 usually.Air-conditioning spike refrigeration duty is often again far above the heat supply peak heating load, this make air-conditioning transient state heat consumption and the hot water circuit amount that needs far above heat supply, from and bring the operation of hot water distributing system to regulate problem.
Adopting the solution dehumidifying air-conditioning system of liquid desiccant is to utilize summer above-mentioned hot water to carry out the effective means of air-conditioning as drive source.Solution dehumidifying air-conditioning system has obtained development faster in recent years utilizing low grade heat energy, removing advantage aspect the latent heat load and characteristics that can the purified treatment air.Solution dehumidifying air-conditioning system is by the moisture in the solution absorption humid air of higher concentration, thereby realization is to the dehumidification treatments process of air.Solution concentration behind the absorption moisture reduces, and needs to concentrate regeneration and just can reuse.When the steam partial pressure of the projecting air of surface vapor pressure of solution, the aqueous water in the solution becomes gaseous state and enters in the air, and solution is concentrated regeneration, and the concentrated regeneration of solution can be used low-grade heat energy such as hot water.In solution dehumidifying air-conditioning system, the main energy that consumes is the heat energy of solution concentration regeneration, consumes a spot of electric energy in addition and is used for distributing systems such as solution pump, blower fan.Traditional solution regeneration method mostly is single-stage system, and the circular flow of solution is big, and only about 2%, the efficient of regeneration is lower for the solution concentration difference before and after the regeneration.
Summary of the invention
The purpose of this invention is to provide a kind of with the regenerative device of solution of hot water as drive energy.
It is a kind of with the regenerative device of solution of hot water as drive energy that the present invention proposes, and it is characterized in that: described device is made up of fractional regeneration device and heat reclamation device; Described fractional regeneration device contains the direct contact modules of gas-liquid (1), plate type heat exchanger (4), solution pump (5) composition; Described heat reclamation device contains the air sensible heat recover (2) that reclaims the air draft heat, the plate type heat exchanger (3) that reclaims the heat of the concentrated solution that flows out regenerating unit.
In above-mentioned regenerative device of solution, described fractional regeneration device has level Four, or adopts other progression, forms one-level fractional regeneration device by the direct contact modules of gas-liquid (1), plate type heat exchanger (4), solution pump (5).
In above-mentioned regenerative device of solution, described in every grade of regenerator, hot water enters the solution that the direct contact modules of gas-liquid (1) sprays by plate type heat exchanger (4) heating, improves the surface vapor pressure of solution, and the heat of solution concentration regeneration is provided; By the mode of multi-stage serial connection, inter-stage solution and regeneration air adverse current are carried out heat and mass, improve regeneration efficiency; Described hot water enters plate type heat exchangers at different levels (4) with parallel way or serial arrangement.
Because regenerating unit provided by the invention adopts hot water as drive energy, mode by multi-stage serial connection, inter-stage solution and regeneration air counter-current flow are carried out the caloic exchange, effectively realized the even distribution of mass transfer driving force, improved regeneration efficiency, provide condition for efficiently utilizing the heat extraction of cogeneration system summer.In addition, for solution dehumidifying air-conditioning system, energy is to exist with chemical energy rather than with the form of heat energy, so its accumulation of energy ability is very big, and under general storage condition, can not dissipate, accumulation of energy is stable, the operation that helps system is regulated.
Description of drawings
Fig. 1: regenerative device of solution schematic diagram 1 (hot water enters plate type heat exchangers 4 at different levels with parallel form).
Fig. 2: regenerative device of solution schematic diagram 2 (hot water enters plate type heat exchangers 4 at different levels with the polyphone form).
The specific embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is described further:
Referring to Fig. 1 and Fig. 2, this regenerative device of solution comprises: the direct contact modules 1 of gas-liquid, air sensible heat recover 2, solution-solution plate type heat exchanger 3; Water-solution plate type heat exchanger 4, solution pump 5.In every grade of regenerator, hot water enters the solution that the direct contact modules 1 of gas-liquid sprays by plate type heat exchanger 4 heating, improves the surface vapor pressure of solution, and the heat of solution concentration regeneration is provided.By the mode of multi-stage serial connection, inter-stage solution and regeneration air adverse current are carried out heat and mass, improve regeneration efficiency.In addition, be provided with hot regenerator 2 of air and solution heat regenerator 3 in the regenerating unit, air and weak solution so that preheating enters regenerating unit reduce system energy consumption.Hot water can enter plate type heat exchangers 4 at different levels with parallel way (Fig. 1) or serial arrangement (Fig. 2).
This regenerative device of solution is made up of fractional regeneration device and heat reclamation device.The fractional regeneration device is made up of the direct contact modules 1 of gas-liquid, plate type heat exchanger 4, solution pump 5, and above-mentioned three parts are formed one-level, and total level Four shown in Figure 1 also can adopt other progression.Heat reclamation device is made up of air sensible heat recover 2, plate type heat exchanger 3, reclaims the heat of the concentrated solution of air draft and outflow regenerating unit respectively.
The operation principle of this regenerative device of solution is as follows:
As shown in Figure 1, after regeneration air (can use outdoor new wind) at first is preheated through air-air sensible heat exchanger 2, contact with pyrosol by the direct contact modules A of gas-liquid, B, C, D successively, the humidity of air constantly increases along journey, and discharge was outdoor after the air of final high temperature high humidity reclaimed heat through air-air sensible heat exchanger 2.
After needing the weak solution (inter-stage solution) of regeneration at first to enter plate type heat exchanger 3 to be preheated, successively by the direct contact modules D of gas-liquid, C, B, A, the flow direction of inter-stage solution is opposite with the flow direction of regeneration air, the concentration of solution constantly increases in this process, last concentrated solution is discharged from the direct contact modules A of gas-liquid, after passing through the weak solution of plate type heat exchanger 3 preheating opposite sides again, directly supply with the dehumidifier use or store standby.
In every grade of regenerator, the inter-stage solution that enters this grade regenerator is earlier with after the interior solution of the direct contact modules 1 bottom liquid bath of gas-liquid mixes, under the driving of solution pump 5, solution is heated by the hot water of opposite side from module bottom inflow plate type heat exchanger 4 in the level, the liquid distributor of the direct contact modules 1 of process gas-liquid flows down and soaks filler then, pyrosol contacts the exchange of carrying out heat and quality with regeneration air in filler, moisture in the solution enters in the regeneration air, solution after concentrating is got back in the liquid bath of module 1 bottom, and part solution flows into and continues to concentrate regeneration in the next stage regenerator.In every grade of regenerator, the heat and mass transfer process of solution and air requires that spray solution amount in the bigger level is arranged, and system matches then requires less liquid inventory.This spray solution amount of installing in each grade is bigger, and less in the mobile solution amount of inter-stage, has coordinated this contradiction by the plural serial stage mode, makes that the efficient of whole regenerative process is higher, the solution concentration differential nearly 10% before and after the regeneration.
Inter-stage solution is minimum in the concentration of the direct contact modules A of gas-liquid concentration the highest, module D, and is therefore minimum, the highest in the surface vapor pressure of module D in the surface vapor pressure of modules A through the spray solution after plate type heat exchanger 4 heating; And regeneration air is minimum in the humidity of modules A, steam partial pressure is minimum, and is the highest in the humidity of module D, steam partial pressure is maximum; Therefore, inter-stage solution and regeneration air stream are counter-current flow, can be so that the mass transfer driving force (steam partial pressure is poor) of solution and regeneration air be comparatively even, thus can reduce irreversible loss, improve regeneration efficiency.
This regenerating unit also can adopt flow process shown in Figure 2, be that with the difference of Fig. 1 flow process the type of flow of hot water is different, hot water enters plate type heat exchangers 4 at different levels with parallel way in Fig. 1, and hot water then enters the plate type heat exchanger 4 of module D, C, B, A correspondence successively in the mode of series connection among Fig. 2.Hot water polyphone arrangement shown in Figure 2, after the superheated water heating, the temperature of module D spray solution is the highest, concentration is minimum, thereby the surface vapor pressure of spray solution is the highest; The surface vapor pressure of modules A spray solution is minimum.Because the humidity of regeneration air in module D is the highest, steam partial pressure is maximum, steam partial pressure in modules A is minimum, thereby the arrangement of hot water shown in Figure 2 polyphone, can be so that solution and the regeneration air heat and mass driving force in regenerators at different levels be more even.
Claims (3)
1, a kind of with the regenerative device of solution of hot water as drive energy, it is characterized in that: described device is made up of fractional regeneration device and heat reclamation device; Described fractional regeneration device contains the direct contact modules of gas-liquid (1), plate type heat exchanger (4), solution pump (5) composition; Described heat reclamation device contains the air sensible heat recover (2) that reclaims the air draft heat, the plate type heat exchanger (3) that reclaims the heat of the concentrated solution that flows out regenerating unit.
2, according to the described regenerative device of solution of claim 1, it is characterized in that: described fractional regeneration device has level Four, or adopts other progression, forms one-level fractional regeneration device by the direct contact modules of gas-liquid (1), plate type heat exchanger (4), solution pump (5).
3, according to claim 1 or 2 described regenerative device of solution, it is characterized in that: described in every grade of regenerator, hot water enters the solution that the direct contact modules of gas-liquid (1) sprays by plate type heat exchanger (4) heating, improves the surface vapor pressure of solution, and the heat of solution concentration regeneration is provided; By the mode of multi-stage serial connection, inter-stage solution and regeneration air adverse current are carried out heat and mass, improve regeneration efficiency; Described hot water enters plate type heat exchangers at different levels (4) with parallel way or serial arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100122606A CN1862150A (en) | 2006-06-15 | 2006-06-15 | Solution regenerator using hot water as driving energy source |
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| CNA2006100122606A CN1862150A (en) | 2006-06-15 | 2006-06-15 | Solution regenerator using hot water as driving energy source |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128477A (en) * | 2011-04-20 | 2011-07-20 | 北京华创瑞风空调科技有限公司 | Solution-desiccant air handling unit |
| CN102519299A (en) * | 2011-12-15 | 2012-06-27 | 东南大学 | System capable of improving cooling effect of cooling tower by means of reducing moisture content of air |
| CN104728978A (en) * | 2015-03-26 | 2015-06-24 | 北京格瑞力德空调科技有限公司 | Device for evaporating cooling with waste heat combined with saline solution and preparing cold water and cold air at the same time |
| CN108006853A (en) * | 2017-10-25 | 2018-05-08 | 河南中烟工业有限责任公司 | The air-conditioner wind dehydrating unit of solution concentration is carried out using solar water |
-
2006
- 2006-06-15 CN CNA2006100122606A patent/CN1862150A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128477A (en) * | 2011-04-20 | 2011-07-20 | 北京华创瑞风空调科技有限公司 | Solution-desiccant air handling unit |
| CN102519299A (en) * | 2011-12-15 | 2012-06-27 | 东南大学 | System capable of improving cooling effect of cooling tower by means of reducing moisture content of air |
| CN102519299B (en) * | 2011-12-15 | 2013-05-01 | 东南大学 | System capable of improving cooling effect of cooling tower by means of reducing moisture content of air |
| CN104728978A (en) * | 2015-03-26 | 2015-06-24 | 北京格瑞力德空调科技有限公司 | Device for evaporating cooling with waste heat combined with saline solution and preparing cold water and cold air at the same time |
| CN108006853A (en) * | 2017-10-25 | 2018-05-08 | 河南中烟工业有限责任公司 | The air-conditioner wind dehydrating unit of solution concentration is carried out using solar water |
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