KR20130060437A

KR20130060437A - Hydratede apparatus for recycling of waste refrigerant gas for waste car airconditioner

Info

Publication number: KR20130060437A
Application number: KR1020110126490A
Authority: KR
Inventors: 이강우; 이재정; 문동현; 신형준; 한규원
Original assignee: (주)유성
Priority date: 2011-11-30
Filing date: 2011-11-30
Publication date: 2013-06-10

Abstract

In the present invention, by hydrating the waste refrigerant recovered from the waste vehicle by a reactor having a simple structure using water and compressed air, the hydration process of the waste refrigerant is simplified, and it is possible to operate at room temperature, thus reducing the operating cost. In particular, the present invention relates to a device for hydrating waste refrigerant for use in air conditioners, which is recovered from waste vehicles, characterized in that the storage stability and transport and handling are easy. The heavier the slurry, the lower the specific gravity of the water. The slurry, which is impurity contained in the waste refrigerant, is separated into the purified water and slurried in the purified state, thereby recovering a high-purity refrigerant from the waste refrigerant. No energy needed for change to save energy and save energy And it is an advantage transportation and handling easier.

Description

HYDRATEDE APPARATUS FOR RECYCLING OF WASTE REFRIGERANT GAS FOR WASTE CAR AIRCONDITIONER}

In the present invention, by hydrating the waste refrigerant recovered from the waste vehicle by a reactor having a simple structure using water and compressed air, the hydration process of the waste refrigerant is simplified, and it is possible to operate at room temperature, thus reducing the operating cost. The present invention relates to an apparatus for hydrating waste refrigerant for air conditioners, which has been recovered from used vehicles, characterized by storage stability, transportation and handling for easy recycling.

According to the Ministry of Land, Transport and Maritime Affairs, the number of automobiles in Korea is 1794 million as of 2010, and the number of automobiles is rapidly increasing. According to the statistics of the Korea Automobile Manufacturers Association, 2007 The annual increase is about 570,000 units per year, about 650,000 units in 2008, and about 71,1366 units in 2009. In the meantime, the domestic junk car system has been used to compress, crush or cut waste vehicles, and restrict the recycling of some parts. If the system is not used properly, the system will lead to environmental destruction.

In developed countries, waste cars are recognized as a resource, and research on the development of recycling technology for automobile parts and the management of waste trucks is being actively carried out. And the Law on Resource Recycling of Automobiles' is being enacted. Currently, the recycling rate of used cars remains at 80% level, and the government will increase it to more than 95% from 2015. There is a lack of research and development on demolition management, and technologies for management, treatment and recovery of pollutants that cause environmental pollution, especially in the process of decommissioning and recycling of scrapped cars, are not properly established.

In the process of disposal of waste cars, waste vehicles undergo deconstruction and shredding, and then recover gasoline, engine oil, air conditioner refrigerant, separate parts that can be recycled during the first dismantling process, and Separate wiring, synthetic resin, etc. The gasoline, battery, and wiring recovered in the above process are recycled, but the collected engine oil and air conditioner refrigerants are incinerated with synthetic resins to cause environmental pollution. In particular, HCFCs used as air conditioner refrigerants in waste vehicles Freon gas, such as -22, HCFC-141b, HCFC-142b, etc., has a hole in the atmospheric ozone layer when halogen gas is released into the atmosphere as a main component, and causes global warming. However, in Korea, the situation is that the freon gas generated from the abandoned cars is released into the atmosphere and air conditioner refrigerants are not properly recovered.

Therefore, in order to solve the above problems, Patent Literature 1 discloses a refrigerant recovery and recharging device and a refrigeration oil discharge method of an automotive air conditioner refrigerant system, and Patent Literature 2 relates to a technique for recovering, regenerating, and recharging a vehicle air conditioner refrigerant. Although this is known, in the case of the above patents, by simply recovering the waste refrigerant in a gas state, the volume is large, and there are many inconveniences in storage stability and transportation and handling.

In view of the inconvenience of handling the gaseous waste refrigerant recovered by the above-described method, the present inventors hydrate the recovered waste refrigerant to make up for it. With this in mind, the present invention has been completed.

For reference, as a hydration apparatus, as shown in FIG. 1 in Patent Document 3, the gas supply unit 110, the water supply unit 120, and the reactor 200, the gas supply unit 110 and the water supply unit ( 120 may supply gas and water to the reactor 200, respectively, and may discharge the fluid present in the reactor 200 to the outside, and discharge the gas hydrate as a final product. Pelletizer (140), and the storage unit 150, the discharged gas hydrate is stored, and the reactor 200 and the conduit connected to the reactor 200 to supply the cooling water to the temperature maintaining portion Gas hydrate continuous manufacturing apparatus 100 including a cooling unit 160 is known, but in the case of the above patent, the gas to be hydrated is a gas of low molecular gas molecules such as methane, ethane, propane, or carbon dioxide Hi Rate for lung refrigerant or the like suitable for the (gas hydrate), and a large molecular weight was air-conditioning problems are inappropriate.

Patent Document 1: Korean Unexamined Patent Publication No. 10-2003-0077812 (Refrigerant recovery and filling device and refrigeration oil discharge method of automotive air conditioner refrigerant system) Patent Document 2: Korean Laid-Open Patent Publication No. 10-2009-0044614 (Recovery, Regeneration, and Filling Device for Refrigerant for Air Conditioning Vehicle) Patent Document 3: Domestic Patent Publication No. 10-1044770 (Gas hydrate continuous production apparatus and its manufacturing method)

In the present invention, by hydrating the waste refrigerant recovered from the waste vehicle by a reactor having a simple structure using water and compressed air, the hydration process of the waste refrigerant is simplified, and it is possible to operate at room temperature, thus reducing the operating cost. It is an object of the present invention to provide an apparatus for hydrating waste refrigerant for air conditioners recovered from used vehicles, which is characterized in that the storage is stable, transport and handling can be easily recycled.

In particular, the present invention is a state in which the recovered waste refrigerant in the reactor in the hydrate slurry process, the slurry with a heavier specific gravity than the water sinks under water, and the air, nitrogen, etc., impurities contained in the waste refrigerant are separated and purified on the water surface. Hydrate of the waste refrigerant for air conditioner recovered from the waste vehicle, characterized in that the energy can be saved by recovering a high-purity refrigerant from the waste refrigerant because it is slurried at Another object is to provide a firearm.

The present invention, in order to achieve the above object to be solved, waste refrigerant supply unit (A); A water supply part B; Compressed air supply (C);

Compressed air is supplied from the compressed air supply unit (C) to the waste refrigerant supplied from the waste refrigerant supply unit (112) of the waste refrigerant supply unit (A) and to a mixed mixture of water supplied from the water supply unit (B). A reactor (108) for producing waste refrigerant from the blend in the form of a hydrate slurry;

A hydrate slurry storage tank 111 for recovering and storing the hydrate slurry generated in the reactor;

The hydration apparatus of the waste refrigerant for air conditioner collect | recovered from the waste vehicle characterized by including is made into a subject solving means.

The water supply unit B includes a water tank 103 for storing water supplied from the outside, and a pressure pump 106 for pressurizing the water transferred from the water tank and supplying the water to the reactor 108.

The compressed air supply unit (C) is composed of a compressor (102) for compressing air supplied from the outside, and a compressed air tank (105) for storing and supplying compressed air into the reactor,

The volume ratio of water and waste refrigerant introduced into the reactor 108 is 1: 280 ~ 340,

Water pressure of the water supplied into the reactor 180 is 1 ~ 25 kg / cm ² The inside of the reactor 180 is characterized in that the pressure of the gas phase at a temperature of -5 ~ 30 ℃ maintains 1 ~ 15 kgf / cm ² (absolute pressure).

According to the present invention by the above-mentioned means for solving the problem, the waste refrigerant recovered from the waste vehicle is hydrated and slurried by a reactor having a simple structure using water and compressed air, so that the hydration process of the waste refrigerant is simple and normal temperature operation is possible. Therefore, the operation cost is low, and in particular, in the present invention, when the recovered waste refrigerant is hydrated in the reactor, the slurry having a higher specific gravity than the water sinks under water, and air, nitrogen, etc., which are impurities contained in the waste refrigerant, As it is separated from the water surface and slurried in a refined state, by recovering a high-purity refrigerant from the waste refrigerant, energy is not required because a separate energy for phase change is not needed. The advantage is easy handling.

1 is a schematic diagram schematically showing a conventional gas hydrate continuous production apparatus,
Figure 2 is a schematic diagram schematically showing a device for hydrating waste refrigerant for air conditioning recovered from the waste vehicle according to the present invention,
Figure 3 relates to a block diagram showing in detail the hydration apparatus of the waste refrigerant for air conditioning recovered from the waste vehicle according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, a preferred embodiment of a hydration apparatus for an air conditioner waste refrigerant recovered from a waste vehicle according to the present invention (hereinafter referred to as an `` hydration apparatus for an air conditioner waste refrigerant '') will be described in detail with reference to the accompanying drawings. In the detailed description, reference is made to the drawings and drawings for reference to the structure and operation to the extent that the invention can be easily carried out by those skilled in the art.

Hydration apparatus for waste refrigerant for air conditioners according to the present invention, as shown in Figure 2 and 3,

Waste refrigerant supply unit (A);

A water supply part B;

Compressed air supply (C);

And a control unit.

In the present invention, the "refrigerant refrigerant" is a freon gas such as HCFC-22, HCFC-141b, HCFC-142b, etc., which is a waste refrigerant gas for air conditioning recovered from a waste vehicle, (hereinafter referred to as "HCFCs / HFCs system"), When halogen gas is released into the atmosphere as a main component, it creates a hole in the atmospheric ozone layer and causes global warming. Under the Montreal Protocol, HCFC refrigerants have been phased out from 2013 to 2009 and 2010, based on average production, and are to be retired in 2030.

In addition, the present invention uses water which is a host molecule for generating hydrates by mixing with waste refrigerants such as HCFCs / HFCs based in the reactor 108. The main material, water, refers to a crystalline compound that physically captures and traps guest molecules, such as waste refrigerants, in a three-dimensional lattice structure in which molecules are formed through hydrogen bonding without chemical bonding.

Meanwhile, waste refrigerants such as HCFCs / HFCs based on hydration in the present invention have high molecular weights, unlike low molecular gas molecules such as methane, ethane, propane, or carbon dioxide, which are subject to hydration in Patent Document 3. As it is a waste refrigerant for air conditioners such as HFCs, it has the property of easily hydrated even under normal temperature and pressure conditions.

Therefore, the apparatus for hydrating waste refrigerant for air conditioners according to the present invention is a device suitable for the hydration of the waste refrigerant having the above characteristics, first, from the waste refrigerant supply (A) to the waste refrigerant into the reactor 108 Supplies water to the reactor 108 by pressurized water from the feed water supply unit B to mix the waste refrigerant with the water, thereby mixing the waste refrigerant with the water. At this time, when the water is supplied at normal pressure by the pressure of the waste refrigerant gas introduced into the reactor 108, the pressurized water is supplied because the water is not properly introduced into the reactor 108.

And when the compressed air is supplied from the compressed air supply unit (C) to the blended mixture of water and waste refrigerant, the waste refrigerant in a three-dimensional lattice structure in which water molecules are formed through hydrogen bonding by the pressure of the compressed air As the molecules are physically captured without chemical bonding, crystalline compounds in the form of hydrate slurry are produced.

At this time, the crystalline compound in the form of a hydrate slurry, which is heavier than water, sinks under water, and the waste refrigerant is purified by separating and removing impurities having light specific gravity such as air and nitrogen contained in the waste refrigerant over water.

Hereinafter, the respective components of the apparatus for hydrating waste refrigerant for air conditioners according to the present invention will be described in detail.

The waste refrigerant supply unit (A) is a device for supplying the waste refrigerant recovered from the waste vehicle, etc. into the reactor 108 using the waste refrigerant supply means 112.

The water supply unit B includes a water tank 103 for storing water supplied from the outside, and a pressure pump 106 for pressurizing the water transferred from the water tank and supplying the water to the reactor 108. At this time, when the water is supplied to the atmospheric pressure by the pressure of the waste refrigerant gas introduced into the reactor 108, since the water does not flow properly into the reactor 108, pressurized water pressurized to a pressure higher than the pressure inside the reactor. Supply.

The water pressure of the water supplied into the reactor 108 is 1-25 kg / cm ² (Absolute pressure), and the water pressure is 1 kg / cm ² If it is less than the absolute pressure, water may not be properly supplied into the reactor due to lower than the gas pressure of the waste refrigerant charged inside the reactor 108, and the water pressure of the water is 25 kg / cm ^2. When it exceeds (absolute pressure), supply and demand of the hydraulic pump to apply above is difficult.

In addition, the volume ratio of water and waste refrigerant introduced into the reactor 108 is preferably 1: 280 to 340. When the volume ratio of the waste refrigerant is less than 280 with respect to the volume ratio of water supplied into the reactor 108, the required amount of water may be exceeded relative to the content of the waste refrigerant, and the hydration yield may be lowered. When the volume ratio of the refrigerant exceeds 340, the amount of the waste refrigerant to hydrate compared to the amount of water is exceeded, there is a fear that the unrefined waste refrigerant is concentrated again.

The compressed air supply unit C includes a compressor 102 for compressing air supplied from the outside and a compressed air tank 105 for storing the compressed air and supplying the compressed air into the reactor 108. The compressed air stored in the compressed air tank 105, which is pressurized and stored in the compressor 102, is injected into the reactor 108, and the inside of the reactor 108 has a pressure of gaseous phase in a temperature range of -5 to 30 ° C. Maintain 1-15 kgf / cm ² (absolute pressure).

The compressed air supplied into the reactor 108 is not particularly limited, and the supply amount of the compressed air is determined by the gas phase pressure inside the reactor 108, and the reactor 108 is illustrated in FIG. 3. It is characterized by a simple structure with no accessories inside.

When the pressure of the gas phase is increased to 1-15kgf / cm ² , the water molecules and the gas molecules in the reactor 108 are physically reacted, and the HCFCs / HFCs-based refrigerants, which existed in the form of gas, are formed as hydrates or become liquid forms. It forms below the water (high in weight) and begins to separate. As the HCFCs / HFCs-based liquid hydrate mixture is generated, the internal level of the reactor increases, and when the limit of the internal level of the reactor 108 is reached, the valve connected to the hydrate slurry storage tank 111 is opened to hydrate the formed mixture until the initial level is reached. It is sent to the slurry storage tank (111).

If the temperature in the reactor 108 is higher than the temperature defined above or lower than the pressure defined above, there is a concern that the refrigerant may not be hydrated properly. If the volume ratio of the waste refrigerant to the volume ratio of water exceeds 340 volume ratio with respect to 1 volume ratio of water, there is a fear that the amount of waste refrigerant to be hydrated exceeds the amount of water and the unrefined waste refrigerant may be concentrated again. have.

At this time, the water in the reactor 108 is also used to generate a hydrate slurry of a refrigerant, such as HCFCs / HFCs-based during the hydration process, the hydrate slurry or the liquefied HCFCs / HFCs refrigerant in the liquefied state is greater than water, so go under water As it sits, it functions to separate gas impurities such as nitrogen and air contained in the waste refrigerant. The separated impurities are discharged to the outside.

The compressed air tank 105 stores high pressure air of 1-15 kgf / cm ² (absolute pressure) compressed by the compressor 102, and maintains a regulator, a pressure sensor, and a pressure gauge to maintain the reactor 108 at a constant pressure. Equipped.

The reactor 108 is also provided with a water gauge and a pressure gauge for mixing the refrigerant, water and air to produce a refrigerant liquid hydrate slurry mixture, and for measuring the refrigerant liquid hydrate slurry mixture.

For reference, the present invention will be described in detail with reference to the accompanying drawings.

The pressure sensor 101 measures the pressure inside the compressed air tank 105 and detects the differential pressure to drive the compressor 102 when the pressure falls below a predetermined pressure, thereby automatically maintaining a constant pressure inside the compressed air tank 105. Control device.

The solenoid valve 104 installed on the conduit between the compressed air tank 105 and the reactor 108 injects pressurized air from the compressed air tank 105 into the reactor 108 to maintain the internal pressure of the reactor 108. As a valve used to open and close the valve through an electrical signal of a pressure sensor installed inside the reactor 108 to detect a pressure inside the reactor 108. Through this, the solenoid valve 104 adjusts the supply amount of the compressed air introduced into the reactor 108 in accordance with the gas phase pressure inside the reactor 108. That is, the current gas phase pressure inside the reactor 108 detected by the pressure sensor, and 1 ~ 15kgf / cm ² Compressed air of a supply amount proportional to the difference between the reference pressures set within the range is applied to the reactor 108 in accordance with the opening and closing operation of the solenoid valve 104.

In addition, the solenoid valve 109 installed between the reactor 108 and the hydrate slurry storage tank 111 receives a signal from the water level gauge 107 when the level of the product is increased to discharge the refrigerant hydrate slurry product. It is a device that opens and closes.

In addition, the water gauge 107 and the water gauge 110 is a device for measuring the internal water level of the reactor 108 and the hydrate slurry storage tank 111, respectively.

As described above, according to the present invention, the waste refrigerant recovered from the waste vehicle is hydrated and slurried by the reactor 108 having a simple structure using water and compressed air, thereby simplifying the hydration process of the waste refrigerant, and operating at room temperature. It is possible to reduce the operating cost, and to be slurried in the refined state to recover the high-purity refrigerant from the waste refrigerant, it is possible to save energy because no separate energy for phase change is needed. .

As described above, the apparatus for hydrating waste refrigerant for air conditioner recovered from a waste vehicle according to a preferred embodiment of the present invention is illustrated in accordance with the above description and drawings, but this is merely described as an example and the technical idea of the present invention. Those skilled in the art will appreciate that various changes and modifications can be made without departing from the scope of the invention.

A: waste refrigerant supply B: water supply
C: compressed air supply
101: pressure sensor 102: compressor
103: water tank 104: solenoid valve
105: compressed air tank 106: pressurized pump
107: water gauge 108: reactor
109: solenoid valve 110: water gauge
111: hydrate slurry storage tank
112: waste refrigerant supply means

Claims

Waste refrigerant supply unit (A);
A water supply part B;
Compressed air supply (C);
Compressed air is supplied from the compressed air supply unit (C) to the waste refrigerant supplied from the waste refrigerant supply unit (112) of the waste refrigerant supply unit (A) and to a mixed mixture of water supplied from the water supply unit (B). A reactor (108) for producing waste refrigerant from the blend in the form of a hydrate slurry;
A hydrate slurry storage tank 111 for recovering and storing the hydrate slurry generated in the reactor;
A device for hydrating waste refrigerant for air conditioning collected from a waste vehicle comprising a.

The method of claim 1,
The water supply unit B is characterized by consisting of a water tank 103 for storing the water supplied from the outside, and a pressurized pump 106 to pressurize the water transferred from the water tank to be supplied into the reactor 108 An apparatus for hydrating waste refrigerant for air conditioners recovered from used vehicles.

The method of claim 1,
The compressed air supply unit (C) is a compressor 102 for compressing the air supplied from the outside, and a compressed air tank 105 for storing and supplying the compressed air into the reactor 108 from Hydration apparatus of the waste refrigerant | coolants for collect | recovered air conditioner.

The method of claim 1,
Volume ratio of water and waste refrigerant introduced into the reactor (108) is 1: 280 ~ hydration apparatus for the waste refrigerant for the air conditioner recovered from the waste vehicle, characterized in that.

The method of claim 2,
The water pressure of the water supplied into the reactor 108 is 1 ~ 25kg / cm ² (absolute pressure), characterized in that the hydration apparatus of the waste refrigerant for the air conditioner recovered from the waste vehicle.

The method of claim 1,
The inside of the reactor 108 is a hydration apparatus of the waste refrigerant for air conditioner recovered from the waste vehicle, characterized in that the pressure of the gas phase at a temperature of -5 ~ 30 ℃ maintains 1 ~ 15 kgf / cm ² (absolute pressure) .