CN210441684U

CN210441684U - Energy-conserving and constant temperature and humidity's VOCs processing system that admits air

Info

Publication number: CN210441684U
Application number: CN201921220923.2U
Authority: CN
Inventors: 谢海刚; 黄伟
Original assignee: SUZHOU HPT ENERGY EQUIPMENT CO Ltd
Current assignee: SUZHOU HPT ENERGY EQUIPMENT CO Ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-05-01
Anticipated expiration: 2029-07-31

Abstract

The utility model relates to an energy-saving constant-temperature constant-humidity VOCs (volatile organic compounds) air inlet treatment system, which comprises a deep cooling constant-temperature constant-humidity unit and a cold and hot integrated machine, the deep cooling constant temperature and humidity unit comprises an air passing channel with an air inlet and an air outlet at two ends, a precooler, a surface cooler, a deep cooling dehumidifier, a reheater and an auxiliary heating condenser are sequentially arranged in an air passing channel between an air inlet and an air supply outlet, the precooler and the reheater are in an integrated structure or connected by a pipeline, an inlet/outlet of the surface cooler is communicated with a corresponding refrigerating fluid source, an inlet of the deep cooling dehumidifier is communicated into a cold and hot all-in-one machine by a cold water pump, the liquid outlet of the deep cooling dehumidifier is communicated with the cold and hot all-in-one machine through a corresponding pipeline, the liquid inlet of the auxiliary heating condenser is communicated into the cold and hot all-in-one machine through a hot water pump, and the liquid outlet of the auxiliary heating condenser is communicated with the cold and hot all-in-one machine through a corresponding pipeline. The utility model discloses the system can provide constant temperature and humidity operating mode for subsequent VOCs treatment system to heat utilization rate is high, more energy-conserving.

Description

Energy-conserving and constant temperature and humidity's VOCs processing system that admits air

Technical Field

The utility model relates to a VOCs's energy-conserving treatment technical field in organic waste gas's the constant temperature and humidity control and organic waste gas, concretely relates to VOCs processing system that admits air of energy-conserving and constant temperature and humidity.

Background

The treatment methods of organic waste gases VOCs are various in kind and characteristics, and commonly used are adsorption method, combustion method, condensation method, catalytic method, absorption method, low-temperature plasma method, biological method, photocatalytic oxidation method, regenerative oxidation method, and the like.

Each method has advantages and disadvantages, as exemplified by adsorption and condensation methods.

The adsorption method is mainly suitable for treating the organic waste gas with low concentration and high flux, and the treatment method of the organic waste gas at the present stage is quite mature, has low energy consumption and high efficiency, and can thoroughly purify the organic waste gas.

However, this method also has a certain defect, and the adsorption process is undifferentiated adsorption, i.e. not only the VOCs in the organic waste gas are adsorbed, but also a large amount of moisture and the like contained in the organic waste gas are adsorbed, resulting in gradual failure of the adsorbing material. In addition, the temperature variation range of the exhaust gas is relatively large, and the adsorption performance is also affected.

The condensation method is preferentially used for treating high-concentration organic waste gas, and is assisted by other treatment technologies to form a multi-stage treatment system, so that the standard emission is finally realized. The condensation method comprises two processes of condensation and temperature rise. Firstly, the temperature of the organic waste gas is reduced by using a low-temperature technology, and gaseous VOCs and moisture contained in the waste gas are condensed into liquid to be separated out to form an aqueous solution containing VOCs, and the aqueous solution is discharged by a condensed water collecting pipeline. Secondly, the condensed low-temperature organic waste gas only contains a small amount of VOCs, and enters a next-stage treatment system after being heated to the required temperature.

The condensing method has the defects of serious energy consumption and large energy consumption in both the temperature reduction process and the temperature rise process.

The utility model provides an energy-conserving and constant temperature and humidity's VOCs processing system that admits air provides stable humiture operating mode for subsequent VOCs treatment system, improves waste gas treatment efficiency, reduces the energy consumption.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the problem that prior art exists, provide an energy-conserving and constant temperature and humidity's VOCs processing system that admits air.

For realizing above-mentioned technical purpose, reach above-mentioned technological effect, the utility model discloses a following technical scheme realizes:

an energy-saving constant-temperature constant-humidity VOCs air inlet treatment system comprises a deep-cooling constant-temperature constant-humidity unit and a cold-heat all-in-one machine, wherein the deep-cooling constant-temperature constant-humidity unit comprises an air passage with two ends respectively serving as an air inlet and an air outlet, a precooler, a surface cooler, a deep-cooling dehumidifier, a reheater and an auxiliary heating condenser are sequentially arranged in the air passage between the air inlet and the air outlet, the precooler and the reheater are of an integrated structure or are connected through a pipeline to conduct temperature difference heat transfer, a liquid inlet/outlet of the surface cooler is communicated with a corresponding refrigerant liquid source to cool and preliminarily dehumidify the entering gas, a liquid inlet of the deep-cooling dehumidifier is communicated into the cold-heat all-in-one machine through a cold water pump to provide refrigerant liquid, and a liquid outlet of the deep-cooling dehumidifier is communicated with the cold-heat, the device comprises a cold and hot all-in-one machine, a hot water pump, an auxiliary heating condenser, a hot water inlet, a hot water outlet, a hot water circulation and a cooling and heating device.

And a temperature difference power cycle is formed between the precooler and the reheater through the temperature difference between the front part of the surface cooler and the rear part of the deep cooling dehumidifier, so that the precooler precools the gas before entering the surface cooler.

An auxiliary air-cooled condenser is arranged between a liquid inlet of the auxiliary heating condenser and the hot water pump, bypass valves are connected in parallel at two ends of the auxiliary air-cooled condenser and used for assisting heat dissipation through the auxiliary air-cooled condenser under low heat load, and sufficient heat is directly provided by opening the bypass valves under high heat load.

And a condensed water receiving tray is arranged below the precooler, the surface cooler, the cryogenic dehumidifier and the reheater and used for collecting condensed water condensed from gas, and a drain valve and a corresponding drain outlet are arranged at the bottom of the condensed water receiving tray and used for draining the condensed water.

The cold and hot all-in-one machine generates chilled water in a corresponding compressor refrigeration mode, and generates hot water by utilizing condensed heat in the refrigeration process, and the chilled water and the hot water are respectively supplied to the deep cooling dehumidifier and the auxiliary heating condenser.

The utility model has the advantages that:

the utility model discloses the system can provide constant temperature and humidity operating mode for subsequent VOCs treatment system to heat utilization rate is high, more energy-conserving, can adapt to various seasonal environment.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

The reference numbers in the figures illustrate: A. the system comprises a cryogenic constant-temperature constant-humidity unit, a B, an air inlet, a C, a pipeline, a D, a precooler, an E, a surface cooler, an F, a cryogenic dehumidifier, a G, a reheater, an H, an auxiliary heating condenser, an I, an air supply outlet, a J, a condensed water receiving tray, a K, a first regulating valve, an L, a second regulating valve, an M, a drain valve, an N, an electric three-way regulating valve, an O, a cold water pump, a P, an auxiliary air-cooled condenser, a Q, a bypass valve, a R, a hot water pump, an S, and.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1, an energy-saving constant-temperature and constant-humidity inlet processing system for VOCs comprises a cryogenic constant-temperature and constant-humidity unit a and a cold-heat integrated machine S, wherein the cryogenic constant-temperature and constant-humidity unit a comprises an air passage with two ends respectively being an air inlet B and an air outlet I, a precooler D, a surface cooler E, a cryogenic dehumidifier F, a reheater G and an auxiliary heating condenser H are sequentially arranged in the air passage between the air inlet B and the air outlet I, the precooler D and the reheater G are of an integrated structure or connected by a pipeline C to perform temperature difference heat transfer, an inlet/outlet of the surface cooler E is communicated with a corresponding refrigerant source, in this embodiment, the refrigerant is chilled water, the chilled water is provided by a user and is communicated with a user water chilling unit to cool and dehumidify inlet gas, in addition, a first regulating valve K and a second regulating valve L are respectively arranged on an inlet and outlet pipeline of the surface cooler E, by manually adjusting the flow, the liquid inlet of the deep cooling dehumidifier F is communicated to the cold and hot integrated machine S through a cold water pump O, used for providing refrigerating fluid, in the embodiment, the refrigerating fluid adopts refrigerating water, a liquid outlet of the deep cooling dehumidifier F is communicated with the cold and hot all-in-one machine S through a corresponding pipeline to form refrigerating fluid circulation, deeply cooling and dehumidifying the entering gas, communicating a liquid inlet of the auxiliary heating condenser H into the cold-hot all-in-one machine S through a hot water pump R, for providing hot liquid, in this embodiment, the hot liquid is hot water, a liquid outlet of the auxiliary heating condenser H is communicated with the cold and hot integrated machine S through a corresponding pipeline to form a hot liquid circulation, the gas that gets into heats, in this embodiment, is provided with electronic three way control valve N between the pipeline that the business turn over liquid mouth of auxiliary heating condenser H corresponds, adjusts the size of auxiliary heating condenser H heating volume through electronic three way control valve N.

The temperature difference between the precooler D and the reheater G before passing through the surface cooler E and after passing through the cryogenic dehumidifier F forms a temperature difference power cycle, energy in low-temperature gas subjected to dehumidification after the reheater G is recycled through the precooler D, the low-temperature gas is used for precooling the gas before entering the surface cooler E by the precooler D, dehumidification and cooling loads of the surface cooler E and the cryogenic dehumidifier F are reduced, the dehumidification capacity is increased, and extra energy is not required to be provided.

An auxiliary air-cooled condenser P is arranged between a liquid inlet of the auxiliary heating condenser H and the hot water pump R, two ends of the auxiliary air-cooled condenser P are connected with a bypass valve Q in parallel, and the auxiliary air-cooled condenser P is used for assisting heat dissipation through the auxiliary air-cooled condenser P (closing the bypass valve Q at the moment) under low heat load, so that the sufficient refrigeration capacity is ensured, and especially when the heat dissipation capacity of the auxiliary heating condenser H cannot be matched with that of the deep cooling dehumidifier F, the auxiliary air-cooled condenser P can be started, so that the deep cooling heating system can normally work; sufficient heat is directly provided by opening the bypass valve Q (and closing the auxiliary air-cooled condenser P) under high heat load, so that the auxiliary heating condenser H has enough heat, and the auxiliary heating condenser H is suitable for the condition that the heat load of the auxiliary heating condenser H is large in winter.

The device comprises a precooler D, a surface cooler E, a cryogenic dehumidifier F and a reheater G, and is characterized in that a condensate water receiving tray J is arranged below the precooler D, the surface cooler E, the cryogenic dehumidifier F and the reheater G and used for collecting condensate water condensed out of gas, the condensate water is mainly produced by the surface cooler E and the cryogenic dehumidifier F, and a drain valve M and a corresponding drain outlet are arranged at the bottom of the condensate water receiving tray J and used for draining the condensate water.

The cold and hot all-in-one machine S generates chilled water in a corresponding compressor refrigeration mode, hot water is generated by utilizing condensed heat in the refrigeration process, the chilled water and the hot water are respectively provided for the deep cooling dehumidifier F and the auxiliary heating condenser H, and the cold and hot all-in-one machine S can be realized by adopting a conventional structure.

The principle of the utility model

Compare the condensation method, the utility model discloses the system can realize the constant temperature and humidity control of air supply temperature T3, air supply humidity M3 (T1 is air inlet temperature in fig. 1, and M1 is air inlet humidity) to there is three energy-conserving designs.

First department, the utility model discloses precooler D and reheater G have been increased in the system, form heat pipe heat recovery structure, heat pipe heat recovery utilizes the difference in temperature work between the gas around surface cooler E and the cryrogenic dehumidifier F, the energy in the low-temperature gas after dehumidification behind the reheater G is used for the precooling to get into the gas temperature of surface cooler E through precooler D recovery, the dehumidification cooling load of surface cooler E and cryrogenic dehumidifier F has been reduced, thereby the electric energy has been practiced thrift, because this process need not provide extra energy.

The second department, the low-temperature gas behind the cryrogenic dehumidifier F need heat to the uniform temperature after just can get into next grade VOCs processing system, by precooler D and re-heater G, when the precooling gets into the gas of surface cooler E, can also heat the gas behind the cryrogenic dehumidifier F to save heat energy, also need not provide extra energy because this process.

Third department, the utility model discloses the system has increased auxiliary heating condenser H, and auxiliary heating condenser H's heat derives from the condensation heat of cryrogenic system, and this part heat is the used heat that needs arrange the atmosphere originally, by high-efficient utilization in this system, has practiced thrift the heat energy that the intensification needs.

In addition, it should be noted that the terms "first", "second", and the like in the specification are used for distinguishing various components, elements, steps, and the like in the specification, and are not used for representing a logical relationship or a sequential relationship between the various components, elements, steps, and the like, unless otherwise specified or indicated.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An energy-saving constant-temperature constant-humidity VOCs air inlet treatment system comprises a deep-cooling constant-temperature constant-humidity unit (A) and a cold-heat all-in-one machine (S), and is characterized in that the deep-cooling constant-temperature constant-humidity unit (A) comprises an air passage with two ends respectively being an air inlet (B) and an air outlet (I), a precooler (D), a surface cooler (E), a deep-cooling dehumidifier (F), a deep-cooling dehumidifier (G) and an auxiliary heating condenser (H) are sequentially arranged in the air passage between the air inlet (B) and the air outlet (I), the precooler (D) and the reheater (G) are of an integrated structure or are connected through a pipeline (C) to carry out temperature difference heat transfer, the liquid inlet/outlet of the surface cooler (E) is communicated with a corresponding refrigerating liquid source for cooling and preliminarily dehumidifying the entering gas, and the liquid inlet of the deep-cooling dehumidifier (F) is communicated into the cold-heat all-in-one machine (S) through a cold water pump (O, the liquid outlet of the auxiliary heating condenser (H) is communicated to the cold-hot all-in-one machine (S) through a corresponding pipeline to provide hot liquid, the liquid outlet of the auxiliary heating condenser (H) is communicated to the cold-hot all-in-one machine (S) through a hot water pump (R) to provide hot liquid, and the liquid outlet of the auxiliary heating condenser (H) is communicated to the cold-hot all-in-one machine (S) through a corresponding pipeline to form hot liquid circulation to heat the entering gas.

2. An energy-saving constant-temperature and humidity inlet treatment system for VOCs according to claim 1, wherein a temperature difference power cycle is formed between the precooler (D) and the reheater (G) through the temperature difference between the front of the surface cooler (E) and the rear of the cryogenic dehumidifier (F), so that the precooler (D) precools the gas before entering the surface cooler (E).

3. An energy-saving constant-temperature and constant-humidity VOCs air inlet treatment system as claimed in claim 1, wherein an auxiliary air-cooled condenser (P) is arranged between the liquid inlet of the auxiliary heating condenser (H) and the hot water pump (R), and a bypass valve (Q) is connected in parallel at two ends of the auxiliary air-cooled condenser (P) for assisting heat dissipation through the auxiliary air-cooled condenser (P) under low heat load and directly providing enough heat under high heat load by opening the bypass valve (Q).

4. An energy-saving constant-temperature and constant-humidity VOCs air inlet treatment system as claimed in claim 1, wherein a condensed water pan (J) is arranged below the precooler (D), the surface cooler (E), the cryogenic dehumidifier (F) and the reheater (G) and used for collecting condensed water condensed from the gas, and a drain valve (M) and a corresponding drain outlet are arranged at the bottom of the condensed water pan (J) and used for draining the condensed water.

5. The energy-saving constant-temperature and constant-humidity VOCs air inlet treatment system according to claim 1, wherein the cold and heat integrated machine (S) generates chilled water by a corresponding compressor refrigeration mode and generates hot water by using condensed heat in the refrigeration process, and the chilled water and the hot water are respectively supplied to the cryogenic dehumidifier (F) and the auxiliary heating condenser (H).