CN110898630B - Transcritical CO 2 Gas-liquid separation device with high separation efficiency for heat pump system - Google Patents

Transcritical CO 2 Gas-liquid separation device with high separation efficiency for heat pump system Download PDF

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CN110898630B
CN110898630B CN201911333038.XA CN201911333038A CN110898630B CN 110898630 B CN110898630 B CN 110898630B CN 201911333038 A CN201911333038 A CN 201911333038A CN 110898630 B CN110898630 B CN 110898630B
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李顺利
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Henan Haoli Intelligent Technology Co ltd
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Abstract

The invention discloses a trans-critical CO 2 A gas-liquid separation device with high separation efficiency for a heat pump system comprises: the gas-liquid separation device disclosed by the invention can greatly reduce the water content of carbon dioxide by treating the water-containing carbon dioxide, and has high gas-liquid separation efficiency.

Description

Transcritical CO 2 Gas-liquid separation device with high separation efficiency for heat pump system
Technical Field
The invention belongs to the technical field of gas-liquid separation devices, in particular to a transcritical CO 2 The heat pump system uses a gas-liquid separation device with high separation efficiency.
Background
Transcritical CO 2 The heat pump system adopts natural working medium CO 2 For the internal circulation working medium of the system, the reverse Carnot circulation principle is applied to CO 2 The working of the compressor is converted from gas state to high-temperature and high-pressure supercritical fluid, and the supercritical fluid exchanges heat with external circulation working medium such as water in a gas cooler, and supercritical CO 2 Becomes supercritical fluid after heat release, the external circulating water absorbs heat of working medium and gradually rises to become hot water, CO 2 After being throttled by an expansion valve, the liquid fluid becomes low-temperature and low-pressure liquid fluid, and the heat in the ambient air is absorbed by an evaporator, and CO is processed 2 The heat absorption generates phase change from liquid state to gas state, and finally returns to the compressor to complete circulation, so that solar energy (or waste heat) is effectively utilized to supply heat and cool. The heat collection efficiency of the system can reach more than 85%, the outlet temperature of the heat collector can reach more than 90 ℃, and the system can meet the requirements of small places such as general hotels, bathing places and the like and household use.
Due to re-entry of recycled carbon dioxide gasThe compressor, however, the carbon dioxide after the first circulation will have water vapor, which will affect the subsequent circulation, so that it needs to be subjected to gas-liquid separation treatment to obtain pure and dry carbon dioxide, and the pure and dry carbon dioxide enters the compressor, thereby increasing the trans-critical CO 2 Thermal efficiency of the heat pump system, therefore, is required in transcritical CO 2 A gas-liquid separation device is arranged at the inlet of a compressor of the heat pump system.
Disclosure of Invention
The invention aims to provide a trans-critical CO 2 The heat pump system uses a gas-liquid separation device with high separation efficiency to solve the defects in the prior art.
The technical scheme adopted by the invention is as follows:
transcritical CO 2 A gas-liquid separation device with high separation efficiency for a heat pump system comprises: the device comprises an air outlet, an air inlet, a motor, a shell, a filtering outlet, a separation layer, a rotary piece and a rotary shaft;
the utility model discloses a motor, including casing, rotary piece, air inlet, air outlet, separating layer, motor, filter outlet and filter outlet, the separating layer is inside to set up at the casing, the separating layer is inside to divide into the casing internal portion into inner chamber and outer cavity two parts, the motor sets up at the casing top, the vertical setting of pivot is in the inner chamber, the top of pivot is connected to the motor output shaft, the rotary piece sets up in the inner chamber and distributes in proper order in the pivot, the air inlet sets up at the casing top and is located motor right side top, the air inlet communicates to the inner chamber in, the gas outlet sets up on the outside right side of casing, the gas outlet communicates to the outer cavity in, the filter outlet sets up in the separating layer left side, filter outlet communicates inner chamber and outer cavity.
The filter outlet comprises a grid shell and an inner core layer filled inside the grid shell.
The right end of the grid housing is connected to the separation layer, and the left end of the grid housing is connected to the left side wall of the housing.
The grid shell is cuboid or square or cylinder.
The surface of the grid shell is uniformly distributed with a plurality of micropores.
The inner core layer is prepared by compounding zeolite powder with carbonized pine powder.
The preparation method of the zeolite powder composite carbonized pine wood powder comprises the following steps:
(1) Mixing zeolite powder and diatomite uniformly according to the mass ratio of 10:2-3, adding the mixture into a rare earth chloride solution, heating and stirring for 2-3min, filtering, washing, drying to constant weight, and sieving with a 40-mesh sieve to obtain a mixture;
(2) Carrying out heat preservation treatment on the obtained mixed powder for 40-45min at 700-800 ℃ in nitrogen atmosphere, and naturally cooling to room temperature to obtain a heat treatment material;
(3) Acidifying pine powder, namely adding the pine powder into phosphoric acid solution with the mass being 3 times of that of the pine powder, stirring for 40 minutes at 70-80 ℃, filtering, washing with clear water to be neutral, and drying to be constant weight to obtain acidified pine powder;
(4) Carbonizing the obtained acidified pine wood powder, adding the acidified pine wood powder into a carbonization furnace, heating to 200-230 ℃, preserving heat for 40min, then continuously increasing the temperature to 380-400 ℃, continuously preserving heat for 1 hour, and then adopting water cooling to room temperature to obtain carbonized materials;
(5) Adding the obtained carbonized material into acetic acid solution with the mass being 3 times of that of the carbonized material, stirring and reacting for 2 hours, filtering, washing with clear water to be neutral, and drying with microwaves to constant weight to obtain carbonized pine wood powder;
(6) Uniformly mixing the heat treatment material and carbonized pine wood powder according to the mass ratio of 3:10-12, and then pressing and forming at 110 ℃ and the pressure of 30-35 MPa.
The rare earth chloride solution is lanthanum chloride solution with the mass fraction of 0.013-0.015%.
The concentration of the phosphoric acid solution is 1.5mol/L.
The microwave power is 500W.
The invention provides a trans-critical CO 2 The gas-liquid separation device with high separation efficiency for the heat pump system can greatly reduce the water content of the carbon dioxide by treating the water-containing carbon dioxide, has high gas-liquid separation efficiency and is used for transcritical CO 2 Heat pump systemThe system is installed in the transcritical CO by using a gas-liquid separation device with high separation efficiency 2 The heat pump system compressor entry, the carbon dioxide gas after circulating enters into interior cavity from the air inlet, start the motor, the motor rotates through the pivot and drives rotatory piece and rotate, the high-speed rotation of rotatory piece drives the carbon dioxide that enters into the interior cavity that contains water vapor again, through the difference of water vapor and carbon dioxide weight, the heavier water vapor of quality can strike on the division board inner wall owing to the drive of centrifugal force, the gathering forms big drop of water and adsorbs on the division board inner wall, realize first gas-liquid separation, then carbon dioxide can flow into in the outer cavity from the filtration export again, when filtering the export, through the adsorption treatment of inner core layer, the second gas-liquid separation has been reached, finally, flow into the gas outlet in the outer cavity again, through setting up the gas outlet in the outside right side top of casing, make carbon dioxide have a flow direction from bottom to top, thereby can play an effect, the water vapor continues forward when passing through turning through inertia, and carbon dioxide gas direct turn keeps on, third gas-liquid separation has been reached, through the gas-liquid separation of three time separator handles, can improve the absorption of carbon dioxide gas by a wide margin, the subsequent purity of carbon dioxide separation has been realized, and the subsequent purity of carbon dioxide treatment has been used is improved.
Drawings
Fig. 1 is a front view structural diagram of the present invention.
FIG. 2 is a block diagram of a filter outlet in accordance with the present invention.
Fig. 3 is a front view of the grid housing of the present invention.
Reference numerals illustrate: the air outlet 1, the air inlet 2, the motor 3, the shell 4, the filtering outlet 5, the grid shell 51, the inner core layer 52, the micropores 53, the separation layer 6, the rotary piece 7 and the rotary shaft 8.
Detailed Description
The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
The invention provides a trans-critical CO 2 High separation for heat pump systemsAn efficient gas-liquid separation apparatus comprising: the air outlet 1, the air inlet 2, the motor 3, the shell 4, the inner cavity 61, the outer cavity 41, the filtering outlet 5, the separation layer 6, the rotary piece 7 and the rotary shaft 8;
the separating layer 6 is arranged inside the shell 4, the separating layer 6 divides the inside of the shell 4 into an inner cavity 61 and an outer cavity 41, the motor 3 is arranged at the top of the shell 4, the rotating shaft 8 is vertically arranged in the inner cavity 61, the top of the rotating shaft 8 is connected to an output shaft of the motor 3, the rotating plate 7 is arranged in the inner cavity 61 and sequentially distributed on the rotating shaft 8, the air inlet 2 is arranged at the top of the shell 4 and is positioned on the right side of the motor 3, the air inlet 2 is communicated into the inner cavity 61, the air outlet 1 is arranged on the right side outside the shell 4, the air outlet 1 is communicated into the outer cavity 41, the filtering outlet 5 is arranged on the left side of the separating layer 6, and the filtering outlet 5 is communicated with the inner cavity 61 and the outer cavity 41.
The filter outlet 5 includes a mesh housing 51 and an inner core layer 52 filled inside the mesh housing 51.
The right end of the grid housing 51 is connected to the separation layer 6, and the left end of the grid housing 51 is connected to the left side wall of the housing 4.
The grid housing 51 is a cuboid or square or cylinder.
The surface of the grid shell 51 is uniformly distributed with a plurality of micropores 53.
Working principle: will transcritical CO 2 The heat pump system is installed in the transcritical CO by using the gas-liquid separation device with high separation efficiency 2 The inlet of the compressor of the heat pump system is filled with circulated carbon dioxide gas from the air inlet 2 into the inner cavity 61, the motor 3 is started, the motor 3 drives the rotary plate 7 to rotate through the rotation of the rotary shaft 8, the high-speed rotation of the rotary plate 7 drives the carbon dioxide of the water-containing steam which enters into the inner cavity 61 to rotate at a high speed, the water steam with heavier mass is driven by centrifugal force to impact on the inner wall of the partition plate through the difference of the weight of the water steam and the carbon dioxide, and the water steam with heavier mass is gathered to form big water drops to be adsorbed on the inner wall of the partition plate, so that the first gas-liquid separation is realized, then the carbon dioxide flows into the outer cavity 41 from the filtering outlet 5, and when passing through the filtering outlet 5, the carbon dioxide is adsorbed through the inner core layer 52The second gas-liquid separation is achieved, finally, the gas outlet 1 is arranged above the right side of the outer cavity 41, so that the carbon dioxide has a flow direction from bottom to top through the gas outlet 1, a baffling effect can be achieved, the water vapor continues to move forward when passing through the turning due to inertia, the carbon dioxide gas is directly turned to continue to move forward, the third gas-liquid separation is achieved, the gas-liquid separation treatment of the carbon dioxide gas can be greatly improved through the three gas-liquid separator treatment, the purity of the treated carbon dioxide is remarkably improved, and the subsequent continuous use is facilitated.
The inner core layer is prepared by compounding zeolite powder with carbonized pine powder.
The preparation method of the zeolite powder composite carbonized pine wood powder comprises the following steps:
(1) Mixing zeolite powder and diatomite uniformly according to the mass ratio of 10:2-3, adding the mixture into a rare earth chloride solution, heating and stirring for 2-3min, filtering, washing, drying to constant weight, and sieving with a 40-mesh sieve to obtain a mixture;
(2) Carrying out heat preservation treatment on the obtained mixed powder for 40-45min at 700-800 ℃ in nitrogen atmosphere, and naturally cooling to room temperature to obtain a heat treatment material;
(3) Acidifying pine powder, namely adding the pine powder into phosphoric acid solution with the mass being 3 times of that of the pine powder, stirring for 40 minutes at 70-80 ℃, filtering, washing with clear water to be neutral, and drying to be constant weight to obtain acidified pine powder;
(4) Carbonizing the obtained acidified pine wood powder, adding the acidified pine wood powder into a carbonization furnace, heating to 200-230 ℃, preserving heat for 40min, then continuously increasing the temperature to 380-400 ℃, continuously preserving heat for 1 hour, and then adopting water cooling to room temperature to obtain carbonized materials;
(5) Adding the obtained carbonized material into acetic acid solution with the mass being 3 times of that of the carbonized material, stirring and reacting for 2 hours, filtering, washing with clear water to be neutral, and drying with microwaves to constant weight to obtain carbonized pine wood powder;
(6) Uniformly mixing the heat treatment material and carbonized pine wood powder according to the mass ratio of 3:10-12, and then pressing and forming at 110 ℃ and the pressure of 30-35 MPa.
The rare earth chloride solution is lanthanum chloride solution with the mass fraction of 0.013-0.015%.
The concentration of the phosphoric acid solution is 1.5mol/L.
The microwave power is 500W.
For further understanding of the present application, a transcritical CO2 heat pump system provided herein is specifically described below with reference to examples using a gas-liquid separation device having high separation efficiency:
example 1
Transcritical CO 2 A gas-liquid separation device with high separation efficiency for a heat pump system comprises: the device comprises an air outlet 1, an air inlet 2, a motor 3, a shell 4, a filtering outlet 5, a separation layer 6, a rotary piece 7 and a rotary shaft 8;
the separating layer 6 is arranged inside the shell 4, the separating layer 6 divides the inside of the shell 4 into an inner cavity 61 and an outer cavity 41, the motor 3 is arranged at the top of the shell 4, the rotating shaft 8 is vertically arranged in the inner cavity 61, the top of the rotating shaft 8 is connected to an output shaft of the motor 3, the rotating plate 7 is arranged in the inner cavity 61 and sequentially distributed on the rotating shaft 8, the air inlet 2 is arranged at the top of the shell 4 and is positioned on the right side of the motor 3, the air inlet 2 is communicated into the inner cavity 61, the air outlet 1 is arranged on the right side outside the shell 4, the air outlet 1 is communicated into the outer cavity 41, the filtering outlet 5 is arranged on the left side of the separating layer 6, and the filtering outlet 5 is communicated with the inner cavity 61 and the outer cavity 41. The filter outlet 5 includes a mesh housing 51 and an inner core layer 52 filled inside the mesh housing 51.
The right end of the grid housing 51 is connected to the separation layer 6, and the left end of the grid housing 51 is connected to the left side wall of the housing 4. The mesh housing 51 is a rectangular parallelepiped or square or cylindrical body. The surface of the mesh housing 51 is uniformly distributed with a plurality of micro-holes 53.
The inner core layer is prepared by compounding zeolite powder with carbonized pine powder.
The preparation method of the zeolite powder composite carbonized pine wood powder comprises the following steps:
(1) Uniformly mixing zeolite powder and diatomite according to the mass ratio of 10:2, then adding the mixture into a lanthanum chloride solution with the mass fraction of 0.013%, heating and stirring for 2min, then filtering, washing, drying to constant weight, and sieving with a 40-mesh sieve to obtain a mixture;
(2) Carrying out heat preservation treatment on the obtained mixed powder for 40-45min at 700 ℃ under the nitrogen atmosphere, and naturally cooling to room temperature to obtain a heat treatment material;
(3) Acidifying pine powder, namely adding the pine powder into phosphoric acid solution with the mass 3 times of the pine powder and the concentration of 1.5mol/L, stirring at 70 ℃ for 40min, filtering, washing with clear water to be neutral, and drying to constant weight to obtain acidified pine powder;
(4) Carbonizing the obtained acidified pine wood powder, adding the acidified pine wood powder into a carbonization furnace, heating to 200 ℃, preserving heat for 40min, then continuously increasing the temperature to 380 ℃, continuously preserving heat for 1 hour, and then adopting water cooling to room temperature to obtain carbonized materials;
(5) Adding the obtained carbonized material into acetic acid solution with the mass being 3 times of that of the carbonized material, stirring and reacting for 2 hours, filtering, washing with clear water to be neutral, and carrying out microwave drying until the weight is constant and the microwave power is 500W to obtain carbonized pine wood powder;
(6) Uniformly mixing the heat treatment material and carbonized pine wood powder according to the mass ratio of 3:10, and then pressing and forming at 110 ℃ and under the pressure of 30MPa to obtain the modified pine wood powder; the zeolite powder composite carbonized pine wood powder prepared by the method has excellent adsorption efficiency, the adsorption capacity of the inner core layer can be remarkably improved by compounding the zeolite powder with the carbonized pine wood powder, the internal pore structure of the pine wood powder can be greatly improved by carbonizing treatment and modifying treatment after carbonizing, the activity of a tissue structure is improved, and the adsorption performance is further remarkably improved.
Example 2
Transcritical CO 2 A gas-liquid separation device with high separation efficiency for a heat pump system comprises: the device comprises an air outlet 1, an air inlet 2, a motor 3, a shell 4, a filtering outlet 5, a separation layer 6, a rotary piece 7 and a rotary shaft 8;
the separating layer 6 is arranged inside the shell 4, the separating layer 6 divides the inside of the shell 4 into an inner cavity 61 and an outer cavity 41, the motor 3 is arranged at the top of the shell 4, the rotating shaft 8 is vertically arranged in the inner cavity 61, the top of the rotating shaft 8 is connected to an output shaft of the motor 3, the rotating plate 7 is arranged in the inner cavity 61 and sequentially distributed on the rotating shaft 8, the air inlet 2 is arranged at the top of the shell 4 and is positioned on the right side of the motor 3, the air inlet 2 is communicated into the inner cavity 61, the air outlet 1 is arranged on the right side outside the shell 4, the air outlet 1 is communicated into the outer cavity 41, the filtering outlet 5 is arranged on the left side of the separating layer 6, and the filtering outlet 5 is communicated with the inner cavity 61 and the outer cavity 41. The filter outlet 5 includes a mesh housing 51 and an inner core layer 52 filled inside the mesh housing 51.
The right end of the grid housing 51 is connected to the separation layer 6, and the left end of the grid housing 51 is connected to the left side wall of the housing 4. The mesh housing 51 is a rectangular parallelepiped or square or cylindrical body. The surface of the mesh housing 51 is uniformly distributed with a plurality of micro-holes 53.
The inner core layer is prepared by compounding zeolite powder with carbonized pine powder.
The preparation method of the zeolite powder composite carbonized pine wood powder comprises the following steps:
(1) Uniformly mixing zeolite powder and diatomite according to a mass ratio of 10:3, adding the mixture into a lanthanum chloride solution with a mass fraction of 0.013-0.015%, heating and stirring for 3min, filtering, washing, drying to constant weight, and sieving with a 40-mesh sieve to obtain a mixture;
(2) Carrying out heat preservation treatment on the obtained mixed powder for 40-45min at 800 ℃ under the nitrogen atmosphere, and naturally cooling to room temperature to obtain a heat treatment material;
(3) Acidifying pine powder, namely adding the pine powder into phosphoric acid solution with the mass 3 times of the pine powder and the concentration of 1.5mol/L, stirring at 80 ℃ for 40min, filtering, washing with clear water to be neutral, and drying to constant weight to obtain acidified pine powder;
(4) Carbonizing the obtained acidified pine wood powder, adding the acidified pine wood powder into a carbonization furnace, heating to 230 ℃, preserving heat for 40min, then continuously increasing the temperature to 400 ℃, continuously preserving heat for 1 hour, and then adopting water cooling to room temperature to obtain carbonized materials;
(5) Adding the obtained carbonized material into acetic acid solution with the mass being 3 times of that of the carbonized material, stirring and reacting for 2 hours, filtering, washing with clear water to be neutral, and carrying out microwave drying until the weight is constant and the microwave power is 500W to obtain carbonized pine wood powder;
(6) Uniformly mixing the heat treatment material and carbonized pine wood powder according to the mass ratio of 3:12, and then pressing and forming at 110 ℃ and under the pressure of 35MPa to obtain the wood powder.
Example 3
Transcritical CO 2 A gas-liquid separation device with high separation efficiency for a heat pump system comprises: the device comprises an air outlet 1, an air inlet 2, a motor 3, a shell 4, a filtering outlet 5, a separation layer 6, a rotary piece 7 and a rotary shaft 8;
the separating layer 6 is arranged inside the shell 4, the separating layer 6 divides the inside of the shell 4 into an inner cavity 61 and an outer cavity 41, the motor 3 is arranged at the top of the shell 4, the rotating shaft 8 is vertically arranged in the inner cavity 61, the top of the rotating shaft 8 is connected to an output shaft of the motor 3, the rotating plate 7 is arranged in the inner cavity 61 and sequentially distributed on the rotating shaft 8, the air inlet 2 is arranged at the top of the shell 4 and is positioned on the right side of the motor 3, the air inlet 2 is communicated into the inner cavity 61, the air outlet 1 is arranged on the right side outside the shell 4, the air outlet 1 is communicated into the outer cavity 41, the filtering outlet 5 is arranged on the left side of the separating layer 6, and the filtering outlet 5 is communicated with the inner cavity 61 and the outer cavity 41. The filter outlet 5 includes a mesh housing 51 and an inner core layer 52 filled inside the mesh housing 51.
The right end of the grid housing 51 is connected to the separation layer 6, and the left end of the grid housing 51 is connected to the left side wall of the housing 4. The mesh housing 51 is a rectangular parallelepiped or square or cylindrical body. The surface of the mesh housing 51 is uniformly distributed with a plurality of micro-holes 53.
The inner core layer is prepared by compounding zeolite powder with carbonized pine powder.
The preparation method of the zeolite powder composite carbonized pine wood powder comprises the following steps:
(1) Uniformly mixing zeolite powder and diatomite according to the mass ratio of 10:2.6, adding the mixture into a lanthanum chloride solution with the mass fraction of 0.014%, heating and stirring for 2.5min, filtering, washing, drying to constant weight, and sieving with a 40-mesh sieve to obtain a mixture;
(2) Carrying out heat preservation treatment on the obtained mixed powder for 42min at 750 ℃ under nitrogen atmosphere, and naturally cooling to room temperature to obtain a heat treatment material;
(3) Acidifying pine powder, namely adding the pine powder into phosphoric acid solution with the mass 3 times of the pine powder and the concentration of 1.5mol/L, stirring at 78 ℃ for 40min, filtering, washing with clear water to be neutral, and drying to constant weight to obtain acidified pine powder;
(4) Carbonizing the obtained acidified pine wood powder, adding the acidified pine wood powder into a carbonization furnace, heating to 218 ℃, preserving heat for 40min, then continuously increasing the temperature to 392 ℃, continuously preserving heat for 1 hour, and then adopting water cooling to room temperature to obtain carbonized materials;
(5) Adding the obtained carbonized material into acetic acid solution with the mass being 3 times of that of the carbonized material, stirring and reacting for 2 hours, filtering, washing with clear water to be neutral, and carrying out microwave drying until the weight is constant and the microwave power is 500W to obtain carbonized pine wood powder;
(6) Uniformly mixing the heat treatment material and carbonized pine wood powder according to the mass ratio of 3:11, and then pressing and forming at 110 ℃ and under the pressure of 33MPa to obtain the wood powder.
Test
The carbon dioxide gas with the water content of 55% is treated by the device of the example, each group is tested 10 times, and the average value is obtained, and the result is as follows:
TABLE 1
Carbon dioxide water content%
Example 1 0.265
Example 2 0.218
Example 3 0.224
As can be seen from table 1, the treatment of the aqueous carbon dioxide by the gas-liquid separation device of the present invention can greatly reduce the water content of the carbon dioxide, and the gas-liquid separation efficiency is high.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

Claims (1)

1. A gas-liquid separation device with high separation efficiency for a transcritical CO2 heat pump system, comprising: the device comprises an air outlet, an air inlet, a motor, a shell, a filtering outlet, a separation layer, a rotary piece and a rotary shaft;
the separation layer is arranged in the shell, the separation layer divides the inner part of the shell into an inner cavity and an outer cavity, the motor is arranged at the top of the shell, the rotating shaft is vertically arranged in the inner cavity, the top of the rotating shaft is connected to the motor output shaft, the rotating sheets are arranged in the inner cavity and are sequentially distributed on the rotating shaft, the air inlet is arranged at the top of the shell and is positioned on the right side of the motor, the air inlet is communicated into the inner cavity, the air outlet is arranged above the right side outside the shell, the air outlet is communicated into the outer cavity, the filtering outlet is arranged on the left side of the separation layer, and the filtering outlet is communicated with the inner cavity and the outer cavity; the filtering outlet comprises a grid shell and an inner core layer filled in the grid shell; the right end of the grid shell is connected to the separation layer, and the left end of the grid shell is connected to the left side wall of the shell; the grid shell is cuboid or square or cylinder; a plurality of micropores are uniformly distributed on the surface of the grid shell; the inner core layer is prepared by compounding zeolite powder with carbonized pine wood powder; the preparation method of the zeolite powder composite carbonized pine wood powder comprises the following steps:
(1) Mixing zeolite powder and diatomite uniformly according to the mass ratio of 10:2-3, adding the mixture into a rare earth chloride solution, heating and stirring for 2-3min, filtering, washing, drying to constant weight, and sieving with a 40-mesh sieve to obtain a mixture;
(2) Carrying out heat preservation treatment on the obtained mixed powder for 40-45min at 700-800 ℃ in nitrogen atmosphere, and naturally cooling to room temperature to obtain a heat treatment material;
(3) Acidifying pine powder, namely adding the pine powder into phosphoric acid solution with the mass being 3 times of that of the pine powder, stirring for 40 minutes at 70-80 ℃, filtering, washing with clear water to be neutral, and drying to be constant weight to obtain acidified pine powder;
(4) Carbonizing the obtained acidified pine wood powder, adding the acidified pine wood powder into a carbonization furnace, heating to 200-230 ℃, preserving heat for 40min, then continuously increasing the temperature to 380-400 ℃, continuously preserving heat for 1 hour, and then adopting water cooling to room temperature to obtain carbonized materials;
(5) Adding the obtained carbonized material into acetic acid solution with the mass being 3 times of that of the carbonized material, stirring and reacting for 2 hours, filtering, washing with clear water to be neutral, and drying with microwaves to constant weight to obtain carbonized pine wood powder;
(6) Uniformly mixing the heat treatment material and carbonized pine wood powder according to the mass ratio of 3:10-12, and then pressing and forming at 110 ℃ and the pressure of 30-35MPa to obtain the modified pine wood powder; the rare earth chloride solution is lanthanum chloride solution with the mass fraction of 0.013-0.015%; the concentration of the phosphoric acid solution is 1.5mol/L; the microwave power is 500W.
CN201911333038.XA 2019-12-23 2019-12-23 Transcritical CO 2 Gas-liquid separation device with high separation efficiency for heat pump system Active CN110898630B (en)

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