A multi-field coordinated microwave liquid phase constant temperature desorption integrated system

Abstract

The present invention relates to the field of energy power and chemical production technology, specifically, a multi-field coordinated microwave liquid phase constant temperature desorption integrated system, including a desorption system and a heat exchange system, the desorption system includes a microwave desorption device, an ultrasonic generator and an ultrasonic transducer, and a desorption reactor is arranged in the microwave desorption device; the heat exchange system includes a condenser, a first cooling liquid injection pool, a first heat exchanger, a desorption liquid storage tank, a second cooling liquid storage tank, a second heat exchanger, a first liquid pump, a second liquid pump, a third liquid pump, a fourth liquid pump, a fifth liquid pump, a vacuum pump and a liquid injection pump, and a vacuum pump is also connected to the condenser, and a vacuum pressure gauge is also arranged between the condenser and the vacuum pump. While effectively improving the desorption performance, the present invention is based on microwave liquid phase constant temperature desorption to realize multiple operation modes of ultrasonic wave, negative pressure and liquid phase boiling evaporation multi-field coordinated microwave liquid phase constant temperature desorption.

Description

Technical Field

[0001] The invention relates to the technical field of energy power and chemical production, and in particular to a multi-field coordinated microwave liquid phase constant temperature desorption integrated system. Background Art

[0002] Industrial production, especially in the fields of energy, power and chemical engineering technology, requires desorption of liquid objects (liquid phase) to obtain gas products, and the obtained gas is discharged or utilized according to the purpose of its production. For example, the wine industry needs to desorb light wine to extract ethanol; the thermal power production industry needs to desorb boiler feed water to remove oxygen; the wet regeneration flue gas desulfurization industry needs to desorb desulfurization rich liquid to obtain SO 2 And the desulfurized liquid is recycled. In order to improve the desorption yield and optimize the desorption performance, it is necessary to solve the desorption method with good comprehensive performance and the feasible desorption process system supporting it.

[0003] The liquid phase desorption method of the prior art is mainly to enhance desorption through simple heat or with the aid of steam stripping. Although the desorption system is relatively mature, the desorption performance is limited by the chemical dissociation and mass transfer capacity, resulting in unsatisfactory desorption performance. In view of the fact that the prior art promotes chemical dissociation through the special effect of microwaves, the effect of ultrasonic cavitation gas carrying, the effect of negative pressure promoting gas separation and the effect of liquid phase boiling evaporation stripping, the multi-field synergistic promotion of desorption performance by microwaves, ultrasonic waves, negative pressure and liquid phase boiling evaporation is an effective method. After searching, although independent microwave, ultrasonic waves, negative pressure and liquid phase boiling evaporation process systems have been used, there is no public publication of the process system of multi-field synergy and application in liquid phase desorption, especially there are few solutions to solve the microwave liquid phase constant temperature desorption process system that meets the desorption requirements. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide an integrated system for multi-field coordinated microwave liquid-phase constant temperature desorption, which, while effectively improving the desorption performance, realizes multiple operating modes of multi-field coordinated microwave liquid-phase constant temperature desorption, including ultrasonic wave, negative pressure and liquid-phase boiling evaporation, based on microwave liquid-phase constant temperature desorption.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A multi-field coordinated microwave liquid-phase constant temperature desorption integrated system, comprising a desorption system and a heat exchange system, wherein the desorption system comprises a microwave desorption device, an ultrasonic generator and an ultrasonic transducer, and a desorption reactor is arranged in the microwave desorption device; the heat exchange system comprises a condenser, a first cooling liquid injection pool, a first heat exchanger, a desorption liquid storage tank, a second cooling liquid storage tank, a second heat exchanger, a first liquid pump, a second liquid pump, a third liquid pump, a fourth liquid pump, a fifth liquid pump, a vacuum pump and a liquid injection pump;

[0007] The second coolant storage tank is connected to the desorption reactor through the fifth liquid pump, the desorption reactor is connected to the second heat exchanger, the second heat exchanger is connected to the second coolant storage tank, the first coolant injection pool is connected to the second heat exchanger through the second liquid pump, and the second heat exchanger is connected to the first coolant injection pool; the desorption liquid storage tank is connected to the desorption reactor through the fourth liquid pump, the desorption reactor is connected to the first heat exchanger, the first heat exchanger is connected to the desorption liquid storage tank, the first coolant injection pool is connected to the first heat exchanger through the third liquid pump, and the first heat exchanger is connected to the first coolant injection pool; the desorption reactor is provided with a first exhaust port, the first exhaust port is connected to the condenser through an exhaust pipe, the condenser is connected to a vacuum pump through a pipeline, a vacuum pressure gauge is also provided on the pipeline between the condenser and the vacuum pump, the vacuum pump is connected to the outside, the first coolant injection pool is connected to the condenser through the first liquid pump, and the condenser is connected to the first coolant injection pool.

[0008] Preferably, the microwave desorption device comprises a first control panel, a resonant cavity and a magnetron, and the microwave desorption device is divided into a left chamber and a right chamber by a longitudinal plate, the resonant cavity is arranged in the left chamber, the first control panel is arranged on the right chamber, and the magnetron is arranged on the longitudinal plate and between the left chamber and the right chamber;

[0009] The desorption reactor is arranged in the resonance cavity, and the desorption reactor comprises an inner tube and an outer shell, wherein the inner tube is arranged in the outer shell, and a first exhaust port, a second exhaust port and a third exhaust port communicating with the outside are arranged side by side on the top of the outer shell of the desorption reactor, and one end of a gas-steam mixed product exhaust pipe is sealed and connected to the first exhaust port, and the other end of the gas-steam mixed product exhaust pipe passes through the top of the resonance cavity and extends outward, and is connected to the condenser, and the condenser is also connected to a pipe for sucking the gas-steam mixed product in the desorption reactor and establishing the The vacuum pump needs to desorb negative pressure, and the vacuum pressure gauge for monitoring and realizing the corresponding negative pressure desorption function at the corresponding liquid phase desorption temperature is also arranged between the condenser and the vacuum pump. The second exhaust port is sealed and connected with the ultrasonic transducer. The top of the microwave desorption device is provided with the ultrasonic transducer. The third exhaust port is sealed and connected with a thermocouple, and the thermocouple is located in the shell of the desorption reactor. The built-in signal connection line of the microwave desorption device transmits the desorption liquid temperature signal measured by the thermocouple to the first control panel of the microwave desorption device.

[0010] The resonant cavity is provided with a first microwave suppression port, a second microwave suppression port, a third microwave suppression port and a fourth microwave suppression port to prevent microwave leakage, and an ultrasonic transducer is connected through the first microwave suppression port, a desorption liquid enters and exits the microwave desorption device through the second microwave suppression port and the third microwave suppression port, and a gas-steam mixed product in the desorption reactor is led out through the fourth microwave suppression port;

[0011] A magnetic stirrer with adjustable stirring speed is arranged at the bottom of the resonance cavity in the microwave desorption device; a magnetron for generating microwave energy and realizing microwave desorption of the desorption liquid in the desorption reactor is arranged at one side of the resonance cavity in the microwave desorption device; the microwave energy of the magnetron is fed into the resonance cavity of the microwave desorption device in a multi-point orthogonal form via a waveguide wire; the ultrasonic generator is connected to the ultrasonic transducer via a high-frequency connecting line, and is connected to the desorption reactor via the opening of the first microwave suppression port through the ultrasonic transducer; the ultrasonic generator emits ultrasonic waves through the adjustment and control of a second control panel located on the ultrasonic generator, thereby realizing the ultrasonic desorption function of the desorption liquid in the desorption reactor.

[0012] Preferably, the negative pressure includes the atmospheric pressure corresponding to the natural environment; and the liquid phase desorption temperature is the boiling temperature or non-boiling temperature corresponding to the negative pressure.

[0013] Preferably, the outer shell of the desorption reactor is a glass shell, a ceramic shell or a plastic shell; and the inner tube of the desorption reactor is a glass tube or a ceramic tube.

[0014] Preferably, the specific heat exchange process of the heat exchange system is:

[0015] The desorption liquid in the desorption liquid storage tank is transported to the space between the shell and the inner tube of the desorption reactor via the fourth liquid pump for desorption, and is heat exchanged by the non-polar coolant located in the inner tube of the desorption reactor. The gas-vapor mixed product generated after desorption is cooled by a condenser to form non-condensable gas and condensate, and the non-condensable gas is discharged via a vacuum pump that generates negative pressure, and the condensate is refluxed into the desorption reactor and mixed with the desorption liquid, and then is cooled twice by the first heat exchanger and returned to the desorption liquid storage tank, and then transported to the desorption reactor via the fourth liquid pump for cyclic desorption;

[0016] The second coolant storage tank contains a non-polar coolant, which is transported to the inner tube of the desorption reactor by a fifth liquid pump, and after cooling the desorption liquid, the non-polar coolant is heated, and then cooled by the second heat exchanger and returned to the second coolant storage tank;

[0017] The first cooling liquid injection pool is equipped with cooling water, which is transported to the condenser through the first liquid pump, and the gas-steam mixed product generated after desorption is cooled by the condenser; the cooling water in the first cooling liquid injection pool is transported to the second heat exchanger through the second liquid pump, and the non-polar cooling liquid is cooled by the second heat exchanger; the cooling water in the first cooling liquid injection pool is transported to the first heat exchanger through the third liquid pump, and the desorption liquid is cooled by the first heat exchanger; the cooling water heated by heat exchange is returned to the first cooling liquid injection pool after reflux, and then atomized by the liquid injection pump arranged in the first cooling liquid injection pool and cooled by heat exchange with the air.

[0018] Preferably, the non-polar coolant is one of carbon tetrachloride, kerosene, heat transfer oil and transformer oil, which have non-polarity, high thermal conductivity and large specific heat properties.

[0019] Preferably, the cold source of the condenser comes from the cooling water of the first coolant injection pool, and the heat source comes from the gas-steam mixed product of the desorption reactor; the condenser structure adopts a shell and tube type, the cooling water of the first coolant injection pool flows through the shell side, and the gas-steam mixed product of the desorption reactor flows through the tube side; the internal tube structure of the condenser adopts one of a straight tube, a serpentine tube and a spiral coil.

[0020] Preferably, the cold source of the first heat exchanger comes from the cooling water of the first coolant injection pool, and the heat source comes from the desorption liquid of the desorption reactor; the first heat exchanger structure adopts a shell and tube type, the cooling water of the first coolant injection pool flows through the shell side, and the desorption liquid of the desorption reactor flows through the tube side; the internal pipe structure of the first heat exchanger adopts one of a straight pipe, a serpentine pipe and a spiral coil.

[0021] Preferably, the cold source of the second heat exchanger comes from the cooling water of the first coolant injection pool, and the heat source comes from the non-polar coolant of the desorption reactor; the second heat exchanger adopts a shell and tube structure, the cooling water of the first coolant injection pool flows through the shell side, and the non-polar coolant of the desorption reactor flows through the tube side; the internal pipe structure of the second heat exchanger adopts one of a straight pipe, a serpentine pipe and a spiral coil.

[0022] Preferably, the specific connection relationship of the constant temperature desorption integrated system is:

[0023] The outlet of the second coolant storage tank is connected to the inner tube inlet of the desorption reactor through the fifth liquid pump, the inner tube outlet of the desorption reactor is connected to the tube side inlet of the second heat exchanger, the tube side outlet of the second heat exchanger is connected to the inlet of the second coolant storage tank, the outlet of the first coolant injection pool is connected to the shell side inlet of the second heat exchanger through the second liquid pump, and the shell side outlet of the second heat exchanger is connected to the inlet of the first coolant injection pool;

[0024] The outlet of the desorption liquid storage tank is communicated with the shell inlet of the desorption reactor through the fourth liquid pump, the shell outlet of the desorption reactor is communicated with the tube-side inlet of the first heat exchanger, the tube-side outlet of the first heat exchanger is communicated with the inlet of the desorption liquid storage tank, the outlet of the first cooling liquid injection pool is communicated with the shell-side inlet of the first heat exchanger through the third liquid pump, and the shell-side outlet of the first heat exchanger is communicated with the inlet of the first cooling liquid injection pool;

[0025] A first exhaust port is arranged on the shell of the desorption reactor, and the first exhaust port is connected to the tube side inlet of the condenser through an exhaust pipe. The tube side outlet of the condenser is connected to a vacuum pump through a pipeline. A vacuum pressure gauge is also arranged on the pipeline between the condenser and the vacuum pump. The vacuum pump is connected to the outside world. The outlet of the first coolant injection pool is connected to the shell side inlet of the condenser through the first liquid pump, and the shell side outlet of the condenser is connected to the inlet of the first coolant injection pool.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] (1) The present invention solves the process system problems of microwave liquid phase constant temperature desorption through a desorption system and a heat exchange system, which is well adapted to the process characteristics and requirements of liquid phase constant temperature desorption, and provides an effective method and process system support for the industrial application of continuous operation of microwave liquid phase constant temperature desorption.

[0028] (2) The present invention integrates a microwave liquid phase constant temperature desorption process through microwave, ultrasonic wave, negative pressure and liquid phase boiling evaporation system, utilizes microwave irradiation to desorb and maintain the desorption liquid temperature of the desorption reactor constant, and uses a variety of operation modes such as independent desorption in each field or coordinated desorption in multiple fields. Through the coordination of multiple fields, the liquid phase chemical dissociation and gas-liquid mass transfer capabilities are improved, providing an effective method and process system support for realizing the industrial application of improving the liquid phase desorption performance.

[0029] (3) The operating mode of the present invention is:

[0030] Multi-field coordinated microwave liquid phase internal cooling static constant temperature desorption mode: the magnetic stirrer is disconnected, the desorption liquid in the desorption reactor is stationary, the desorption liquid in the desorption reactor is cooled by the non-polar coolant from the second coolant storage tank in the desorption reactor inside the desorption device, and the desorption liquid in the desorption reactor is controlled at a constant temperature;

[0031] Multi-field coordinated microwave liquid phase internal cooling dynamic constant temperature desorption mode: the magnetic stirrer can be turned on, the desorption liquid of the desorption reactor circulates between the desorption liquid storage tank and the desorption reactor, the desorption liquid of the desorption reactor is cooled by the non-polar coolant from the second coolant storage tank in the desorption reactor inside the desorption device, and the desorption liquid of the desorption reactor is controlled at a constant temperature;

[0032] Multi-field coordinated microwave liquid phase external cooling dynamic constant temperature desorption mode: the magnetic stirrer can be turned on, the desorption liquid of the desorption reactor circulates between the desorption liquid storage tank, the desorption reactor and the first heat exchanger, and the desorption liquid of the desorption reactor is cooled by cooling water from the first cooling liquid injection pool in the first heat exchanger outside the desorption device. By matching the microwave power, circulation flow and the desorption liquid temperature of the desorption liquid storage tank, the desorption liquid of the desorption reactor can be controlled at a constant temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the multi-field coordinated microwave liquid phase constant temperature desorption integrated system of the present invention;

[0034] Figure 2 It is a partially enlarged schematic diagram of the desorption system of the present invention.

[0035] Description of reference numerals:

[0036] 1-desorption device; 2-desorption reactor; 3-condenser; 4-first cooling liquid injection pool; 5-first heat exchanger; 6-desorption liquid storage tank; 7-second cooling liquid storage tank; 8-second heat exchanger; 9-first liquid pump; 10-second liquid pump; 11-third liquid pump; 12-fourth liquid pump; 13-fifth liquid pump; 14-vacuum pump; 15-vacuum pressure gauge; 16-liquid injection pump; 17-ultrasonic generator; 18-ultrasonic transducer; 19-first microwave suppression port; 20-second microwave suppression port; 21-third microwave suppression port; 22-fourth microwave suppression port; 23-magnetron; 24-resonance cavity; 25-first control panel; 26-second control panel; 27-exhaust pipe; 28-thermocouple; 29-first exhaust port; 30-second exhaust port; 31-third exhaust port. DETAILED DESCRIPTION

[0037] The following is a preferred embodiment and the accompanying drawings in conjunction with the embodiments of the present invention. Figure 1-2 With detailed instructions.

[0038] Example 1

[0039] A multi-field coordinated microwave liquid-phase constant temperature desorption integrated system, comprising a desorption system and a heat exchange system, wherein the desorption system comprises a microwave desorption device 1, an ultrasonic generator 17 and an ultrasonic transducer 18, and a desorption reactor 2 is arranged in the microwave desorption device 1; the heat exchange system comprises a condenser 3, a first cooling liquid injection pool 4, a first heat exchanger 5, a desorption liquid storage tank 6, a second cooling liquid storage tank 7, a second heat exchanger 8, a first liquid pump 9, a second liquid pump 10, a third liquid pump 11, a fourth liquid pump 12, a fifth liquid pump 13, a vacuum pump 14 and a liquid injection pump 16;

[0040] A first exhaust port 29 is arranged on the outer shell of the desorption reactor 2, and the first exhaust port 29 is connected to the tube side inlet of the condenser 3 through the exhaust pipe 27. The tube side outlet of the condenser 3 is connected to the vacuum pump 14 through a pipeline. A vacuum pressure gauge 15 is also arranged on the pipeline between the condenser 3 and the vacuum pump 14. The vacuum pump 14 is connected to the outside world. The outlet of the first cooling liquid injection pool 4 is connected to the shell side inlet of the condenser 3 through the first liquid pump 9, and the shell side outlet of the condenser 3 is connected to the inlet of the first cooling liquid injection pool 4.

[0041] The microwave desorption device 1 comprises a first control panel 25, a resonant cavity 24 and a magnetron 23. The microwave desorption device 1 is divided into a left chamber and a right chamber by a longitudinal plate. The resonant cavity 24 is arranged in the left chamber, the first control panel 25 is arranged on the right chamber, and the magnetron 23 is arranged on the longitudinal plate and between the left chamber and the right chamber.

[0042] A desorption reactor 2 is arranged in the resonance cavity 24, and the desorption reactor 2 includes an inner tube and an outer shell. The inner tube is placed in the outer shell, and the outer shell of the desorption reactor 2 is a glass shell, a ceramic shell or a plastic shell; the inner tube of the desorption reactor 2 is a glass tube or a ceramic tube, and the top of the outer shell of the desorption reactor 2 is provided with a first exhaust port 29, a second exhaust port 30 and a third exhaust port 31 connected to the outside world in parallel, and the first exhaust port 29 is sealed and connected to one end of a gas-steam mixed product exhaust pipe 27, and the other end of the gas-steam mixed product exhaust pipe 27 passes through the top of the resonance cavity 24 and extends outward, and is connected to a condenser 3, and the condenser 3 is also connected to a pipe for extracting the gas-steam mixed product in the desorption reactor 2 and establishing A vacuum pump 14 is provided between the condenser 3 and the vacuum pump 14 to monitor and realize the corresponding negative pressure desorption function at the corresponding liquid phase desorption temperature. The negative pressure includes the atmospheric pressure corresponding to the natural environment. The liquid phase desorption temperature is the boiling temperature or non-boiling temperature corresponding to the negative pressure. The second exhaust port 30 is sealed and connected to the ultrasonic transducer 18. The top of the microwave desorption device 1 is provided with an ultrasonic transducer 18. The third exhaust port 31 is sealed and connected with a thermocouple 28. The thermocouple 28 is located in the shell of the desorption reactor 2. The built-in signal connection line of the microwave desorption device 1 transmits the desorption liquid temperature signal measured by the thermocouple 28 to the first control panel 25 of the microwave desorption device 1.

[0043] The resonance cavity 24 is provided with a first microwave suppression port 19, a second microwave suppression port 20, a third microwave suppression port 21 and a fourth microwave suppression port 22 to prevent microwave leakage, and the ultrasonic transducer 18 is connected through the first microwave suppression port 19, the desorption liquid enters and exits the microwave desorption device 1 through the second microwave suppression port 20 and the third microwave suppression port 21, and the gas-steam mixed product in the desorption reactor 2 is led out through the fourth microwave suppression port 22;

[0044] A magnetic stirrer with adjustable stirring speed is arranged in the microwave desorption device 1 and at the bottom of the resonance cavity 24. A magnetron 23 for generating microwave energy and realizing microwave desorption of the desorption liquid in the desorption reactor 2 is arranged at one side of the resonance cavity 24 in the microwave desorption device 1. The microwave energy of the magnetron 23 is fed into the resonance cavity 24 of the microwave desorption device 1 in a multi-point orthogonal form through a waveguide wire; the ultrasonic generator 17 is connected to the ultrasonic transducer 18 through a high-frequency connecting line, and is connected to the desorption reactor 2 through the opening of the first microwave suppression port 19 through the ultrasonic transducer 18. The ultrasonic generator 17 emits ultrasonic waves through the adjustment and control of the second control panel 26 located on the ultrasonic generator 17, thereby realizing the ultrasonic desorption function of the desorption liquid in the desorption reactor 2.

[0045] The cold source of the condenser 3 comes from the cooling water of the first coolant injection pool 4, and the heat source comes from the gas-steam mixed product of the desorption reactor 2; the structure of the condenser 3 adopts a shell and tube type, the cooling water of the first coolant injection pool 4 flows through the shell side, and the gas-steam mixed product of the desorption reactor 2 flows through the tube side; the internal pipe structure of the condenser 3 adopts one of a straight pipe, a serpentine pipe and a spiral coil, preferably a spiral coil.

[0046] The cold source of the first heat exchanger 5 comes from the cooling water of the first coolant injection pool 4, and the heat source comes from the desorption liquid of the desorption reactor 2; the first heat exchanger 5 adopts a shell and tube structure, the cooling water of the first coolant injection pool 4 flows through the shell side, and the desorption liquid of the desorption reactor 2 flows through the tube side; the internal pipe structure of the first heat exchanger 5 adopts one of a straight pipe, a serpentine pipe and a spiral coil, preferably a spiral coil.

[0047] The cold source of the second heat exchanger 8 comes from the cooling water of the first coolant injection pool 4, and the heat source comes from the non-polar coolant of the desorption reactor 2; the second heat exchanger 8 adopts a shell and tube structure, the cooling water of the first coolant injection pool 4 flows through the shell side, and the non-polar coolant of the desorption reactor 2 flows through the tube side; the internal pipe structure of the second heat exchanger 8 adopts one of a straight pipe, a serpentine pipe and a spiral coil, preferably a spiral coil.

[0048] The outlet of the second cooling liquid storage tank 7 is connected to the inner tube inlet of the desorption reactor 2 through the fifth liquid pump 13, the inner tube outlet of the desorption reactor 2 is connected to the tube side inlet of the second heat exchanger 8, the tube side outlet of the second heat exchanger 8 is connected to the inlet of the second cooling liquid storage tank 7, the outlet of the first cooling liquid injection pool 4 is connected to the shell side inlet of the second heat exchanger 8 through the second liquid pump 10, and the shell side outlet of the second heat exchanger 8 is connected to the inlet of the first cooling liquid injection pool 4;

[0049] The outlet of the desorption liquid storage tank 6 is connected to the shell inlet of the desorption reactor 2 through the fourth liquid pump 12, the shell outlet of the desorption reactor 2 is connected to the tube side inlet of the first heat exchanger 5, the tube side outlet of the first heat exchanger 5 is connected to the inlet of the desorption liquid storage tank 6, the outlet of the first cooling liquid injection pool 4 is connected to the shell side inlet of the first heat exchanger 5 through the third liquid pump 11, and the shell side outlet of the first heat exchanger 5 is connected to the inlet of the first cooling liquid injection pool 4;

[0050] The specific heat exchange process of the heat exchange system is:

[0051] The desorption liquid in the desorption liquid storage tank 6 is transported to the space between the outer shell and the inner tube of the desorption reactor 2 via the fourth liquid pump 12 for desorption, and is heat exchanged by the non-polar coolant located in the inner tube of the desorption reactor 2. The gas-vapor mixed product generated after desorption is cooled by the condenser 3 to form non-condensable gas and condensate. The non-condensable gas is discharged via the vacuum pump 14 that generates negative pressure. The condensate flows back to the desorption reactor 2 and is mixed with the desorption liquid. It is then cooled for the second time by the first heat exchanger 5 and returned to the desorption liquid storage tank 6, and then transported to the desorption reactor 2 via the fourth liquid pump 12 for cyclic desorption;

[0052] The second coolant storage tank 7 is built with a non-polar coolant, which is one of carbon tetrachloride, kerosene, heat transfer oil and transformer oil with non-polarity, high thermal conductivity and large specific heat characteristics. The non-polar coolant is transported to the inner tube of the desorption reactor 2 through the fifth liquid pump 13, and after cooling the desorption liquid, it is heated, and then returned to the second coolant storage tank 7 after being cooled by the second heat exchanger 8;

[0053] The first cooling liquid injection pool 4 is equipped with cooling water, which is transported to the condenser 3 through the first liquid pump 9, and the gas-steam mixed product produced after desorption is cooled by the condenser 3; the cooling water in the first cooling liquid injection pool 4 is transported to the second heat exchanger 8 through the second liquid pump 10, and the non-polar cooling liquid is cooled by the second heat exchanger 8; the cooling water in the first cooling liquid injection pool 4 is transported to the first heat exchanger 5 through the third liquid pump 11, and the desorption liquid is cooled by the first heat exchanger 5; the cooling water heated by heat exchange is returned to the first cooling liquid injection pool 4 after reflux, and then atomized by the liquid injection pump 16 arranged in the first cooling liquid injection pool 4 and cooled by heat exchange with the air.

[0054] Example 2

[0055] A multi-field coordinated microwave liquid phase internal cooling static constant temperature desorption process flow: the circulation device system of the desorption liquid storage tank 6 and the first heat exchanger 5 is in a cut-off state, the desorption liquid is in a static state and is all placed between the outer shell and the inner tube of the desorption reactor 2, the desorption device 1, the first liquid pump 9, and the vacuum pump 14 are turned on in sequence, the desorbed gas-steam mixed product is pumped out by the vacuum pump 14, and the vacuum pressure gauge 15 monitors the pressure between the outer shell and the inner tube of the desorption reactor 2. The cooling water in the first cooling liquid injection pool 4 is sent to the condenser 3 by the first liquid pump 9, and heat is exchanged with the gas-steam mixed product at the exhaust outlet of the desorption reactor 2 to realize the condensation and reflux of water vapor. When the desorption liquid temperature rises to the set desorption temperature, the second liquid pump 10 and the fifth liquid pump are turned on 13, the non-polar coolant in the second coolant storage tank 7 is sent into the inner tube of the desorption reactor 2 by the fifth liquid pump 13, exchanges heat with the stationary desorption liquid between the outer shell and the inner tube and maintains the desorption liquid at a constant temperature, the non-polar coolant at the outlet of the inner tube of the desorption reactor 2 is sent to the tube side of the second heat exchanger 8, exchanges heat with the cooling water sent from the first coolant injection pool 4 to the shell side of the second heat exchanger 8 by the second liquid pump 10, the non-polar coolant cooled at the outlet of the tube side of the second heat exchanger 8 returns to the second coolant storage tank 7, the cooling water heated at the outlet of the shell side returns to the first coolant injection pool 4 and mixes with the cooling water in the first coolant injection pool 4, is sprayed and atomized by the liquid injection pump 16, and is cooled by heat exchange with the air, and then falls back to the first coolant injection pool 4 for recycling.

[0056] Example 3

[0057] A multi-field coordinated microwave liquid phase internal cooling dynamic constant temperature desorption process flow: the cooling water circulation system of the shell side of the first heat exchanger 5 is in a cut-off state, the desorption liquid is in a flowing state, a part of which is placed between the outer shell and the inner tube of the desorption reactor 2, and a part of which is placed in the desorption liquid storage tank 6, the desorption device 1, the first liquid pump 9, and the vacuum pump 14 are turned on in sequence, the desorbed gas-steam mixed product is pumped out by the vacuum pump 14, and the vacuum pressure gauge 15 monitors the pressure between the outer shell and the inner tube of the desorption reactor 2. The cooling water in the first cooling liquid injection pool 4 is sent to the condenser 3 by the first liquid pump 9, and heat is exchanged with the gas-steam mixed product at the exhaust outlet of the desorption reactor 2 to realize the condensation and reflux of water vapor. When the desorption liquid temperature of the desorption reactor 2 rises to the set desorption temperature, the second liquid pump 10, the fourth liquid pump 12 and the fifth liquid pump 13 are turned on, and the second cooling liquid storage tank The nonpolar coolant in 7 is sent into the inner tube of the desorption reactor 2 by the fifth liquid pump 13, and exchanges heat with the desorption liquid sent into the desorption reactor 2 from the desorption liquid storage tank 6 by the fourth liquid pump 12, and maintains the desorption liquid at a constant temperature. The desorption liquid at the outlet of the shell of the desorption reactor 2 returns to the desorption liquid storage tank 6 via the tube side of the first heat exchanger 5, and the nonpolar coolant at the outlet of the inner tube of the desorption reactor 2 is sent to the tube side of the second heat exchanger 8, and exchanges heat with the cooling water sent into the shell side of the second heat exchanger 8 from the first coolant injection pool 4 by the second liquid pump 10. The nonpolar coolant cooled at the outlet of the tube side of the second heat exchanger 8 returns to the second coolant storage tank 7, and the cooling water heated at the outlet of the shell side returns to the first coolant injection pool 4 and mixes with the cooling water in the first coolant injection pool 4, is sprayed and atomized by the liquid injection pump 16, and is cooled by heat exchange with the air, and then falls back to the first coolant injection pool 4 for recycling.

[0058] Example 4

[0059] A multi-field coordinated microwave liquid phase external cooling dynamic constant temperature desorption process flow: the circulation device system of the second cooling liquid storage tank 7 and the second heat exchanger 8 is in a cut-off state, the desorption liquid is in a flowing state, a part of which is placed between the outer shell and the inner tube of the desorption reactor 2, and a part of which is placed in the desorption liquid storage tank 6, the desorption device 1, the first liquid pump 9, and the vacuum pump 14 are turned on in sequence, the desorbed gas-steam mixed product is pumped out by the vacuum pump 14, and the vacuum pressure gauge 15 monitors the pressure between the outer shell and the inner tube of the desorption reactor 2. The cooling water in the first cooling liquid injection pool 4 is sent to the condenser 3 by the first liquid pump 9, and the gas-steam mixed product at the exhaust outlet of the desorption reactor 2 is exchanged with the heat to realize the condensation and reflux of water vapor. When the desorption reactor 2 When the temperature of the desorption liquid rises to the set desorption temperature, the third liquid pump 11 and the fourth liquid pump 12 are turned on, and the desorption liquid in the desorption liquid storage tank 6 is sent by the fourth liquid pump 12 into the shell and inner tube of the desorption reactor 2 for constant temperature desorption, and the desorption liquid at the shell outlet of the desorption reactor 2 is sent to the tube side of the first heat exchanger 5, and exchanges heat with the cooling water sent from the first coolant injection pool 4 to the shell side of the first heat exchanger 5 by the liquid pump 11. The desorption liquid cooled at the outlet of the tube side of the first heat exchanger 5 returns to the desorption liquid storage tank 6, and the cooling water heated at the shell side outlet returns to the first coolant injection pool 4 and mixes with the cooling water in the first coolant injection pool 4, is sprayed and atomized by the liquid injection pump 16, and cools by heat exchange with the air, and then falls back into the first coolant injection pool 4 for recycling.

[0060] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A multi-field coordinated microwave liquid phase constant temperature desorption integrated system, characterized in that: The invention comprises a desorption system and a heat exchange system, wherein the desorption system comprises a microwave desorption device (1), an ultrasonic generator (17) and an ultrasonic transducer (18), and a desorption reactor (2) is provided in the microwave desorption device (1); the heat exchange system comprises a condenser (3), a first cooling liquid injection pool (4), a first heat exchanger (5), a desorption liquid storage tank (6), a second cooling liquid storage tank (7), a second heat exchanger (8), a first liquid pump (9), a second liquid pump (10), a third liquid pump (11), a fourth liquid pump (12), a fifth liquid pump (13), a vacuum pump (14) and a liquid injection pump (16); The microwave desorption device (1) comprises a first control panel (25), a resonant cavity (24), and a magnetron (23); the microwave desorption device (1) is divided into a left chamber and a right chamber by a longitudinal plate; the resonant cavity (24) is provided in the left chamber; the first control panel (25) is provided on the right chamber; and the magnetron (23) is provided on the longitudinal plate and between the left chamber and the right chamber. The desorption reactor (2) is arranged in the resonant cavity (24), and the desorption reactor (2) includes an inner tube and an outer shell. The inner tube is placed in the outer shell. The top of the outer shell of the desorption reactor (2) is provided with a first exhaust port (29), a second exhaust port (30) and a third exhaust port (31) communicating with the outside world. The first exhaust port (29) is sealed and connected to one end of a gas-steam mixed product exhaust pipe (27). The other end of the gas-steam mixed product exhaust pipe (27) passes through the top of the resonant cavity (24) and extends outward, and is connected to the condenser (3). The condenser (3) is also connected to a pipe for extracting the gas-steam mixed product in the desorption reactor (2) and establishing the required desorption negative pressure. The vacuum pump (14) is provided with a pressure sensor, a vacuum pressure gauge (15) for monitoring and realizing a corresponding negative pressure desorption function at a corresponding liquid phase desorption temperature is further provided between the condenser (3) and the vacuum pump (14), the second exhaust port (30) is sealedly connected to the ultrasonic transducer (18), the ultrasonic transducer (18) is provided on the top of the microwave desorption device (1), a thermocouple (28) is sealedly connected to the third exhaust port (31), the thermocouple (28) is located in the housing of the desorption reactor (2), and a signal connection line built into the microwave desorption device (1) transmits a desorption liquid temperature signal measured by the thermocouple (28) to a first control panel (25) of the microwave desorption device (1); The resonant cavity (24) is provided with a first microwave suppression port (19), a second microwave suppression port (20), a third microwave suppression port (21), and a fourth microwave suppression port (22) for preventing microwave leakage, and an ultrasonic transducer (18) is connected through the first microwave suppression port (19), a desorption liquid enters and exits the microwave desorption device (1) through the second microwave suppression port (20) and the third microwave suppression port (21), and a gas-steam mixed product in the desorption reactor (2) is drawn out through the fourth microwave suppression port (22); A magnetic stirrer with an adjustable stirring speed is provided in the microwave desorption device (1) and at the bottom of the resonant cavity (24). A magnetron (23) for generating microwave energy and realizing microwave desorption of the desorption liquid in the desorption reactor (2) is provided on one side of the resonant cavity (24) in the microwave desorption device (1). The microwave energy of the magnetron (23) is fed into the resonant cavity (24) of the microwave desorption device (1) in a multi-point orthogonal form via a waveguide. The ultrasonic generator (17) is connected to the ultrasonic transducer (18) via a high-frequency connecting line. The ultrasonic transducer (18) is connected to the desorption reactor (2) through the opening of the first microwave suppression port (19). The ultrasonic generator (17) emits ultrasonic waves through the regulation and control of a second control panel (26) located on the ultrasonic generator (17), thereby realizing the ultrasonic desorption function of the desorption liquid in the desorption reactor (2). The outlet of the second coolant storage tank (7) is connected to the inner tube inlet of the desorption reactor (2) through the fifth liquid pump (13), the inner tube outlet of the desorption reactor (2) is connected to the tube side inlet of the second heat exchanger (8), the tube side outlet of the second heat exchanger (8) is connected to the inlet of the second coolant storage tank (7), the outlet of the first coolant injection pool (4) is connected to the shell side inlet of the second heat exchanger (8) through the second liquid pump (10), and the shell side outlet of the second heat exchanger (8) is connected to the inlet of the first coolant injection pool (4); The outlet of the desorption liquid storage tank (6) is communicated with the shell inlet of the desorption reactor (2) through the fourth liquid pump (12), the shell outlet of the desorption reactor (2) is communicated with the tube-side inlet of the first heat exchanger (5), the tube-side outlet of the first heat exchanger (5) is communicated with the inlet of the desorption liquid storage tank (6), the outlet of the first cooling liquid injection pool (4) is communicated with the shell-side inlet of the first heat exchanger (5) through the third liquid pump (11), and the shell-side outlet of the first heat exchanger (5) is communicated with the inlet of the first cooling liquid injection pool (4); The desorption reactor (2) is provided with a first exhaust port (29) on the outer shell, and the first exhaust port (29) is connected to the tube-side inlet of the condenser (3) through an exhaust pipe (27). The tube-side outlet of the condenser (3) is connected to a vacuum pump (14) through a pipeline. The vacuum pressure gauge (15) is provided on the pipeline between the condenser (3) and the vacuum pump (14). The vacuum pump (14) is connected to the outside world. The outlet of the first cooling liquid injection pool (4) is connected to the shell-side inlet of the condenser (3) through the first liquid pump (9), and the shell-side outlet of the condenser (3) is connected to the inlet of the first cooling liquid injection pool (4).

2. The multi-field coordinated microwave liquid phase constant temperature desorption integrated system according to claim 1, characterized in that: The outer shell of the desorption reactor (2) is a glass shell, a ceramic shell or a plastic shell; the inner tube of the desorption reactor (2) is a glass tube or a ceramic tube.

3. The multi-field coordinated microwave liquid phase constant temperature desorption integrated system according to claim 1, characterized in that: The condenser (3) adopts a shell and tube structure; the internal tube structure of the condenser (3) adopts one of a straight tube, a serpentine tube and a spiral coil.

4. The multi-field coordinated microwave liquid phase constant temperature desorption integrated system according to claim 1, characterized in that: The first heat exchanger (5) adopts a shell and tube structure, and the internal tube structure of the first heat exchanger (5) adopts one of a straight tube, a serpentine tube and a spiral coil; the second heat exchanger (8) adopts a shell and tube structure, and the internal tube structure of the second heat exchanger (8) adopts one of a straight tube, a serpentine tube and a spiral coil.

5. A desorption method of a multi-field synergistic microwave liquid phase constant temperature desorption integrated system, using a multi-field synergistic microwave liquid phase constant temperature desorption integrated system according to any one of claims 1 to 4, characterized in that: The specific heat exchange process of the heat exchange system is as follows: The desorption liquid in the desorption liquid storage tank (6) is transported to the outer shell and the inner tube of the desorption reactor (2) via the fourth liquid pump (12) for desorption, and is heat exchanged by the non-polar coolant located in the inner tube of the desorption reactor (2). The gas-vapor mixed product generated after desorption is cooled by the condenser (3) to form non-condensable gas and condensate. The non-condensable gas is discharged via the vacuum pump (14) that generates negative pressure. The condensate flows back into the desorption reactor (2) and is mixed with the desorption liquid. It is then cooled twice by the first heat exchanger (5) and returned to the desorption liquid storage tank (6). It is then transported to the desorption reactor (2) via the fourth liquid pump (12) for cyclic desorption. The second coolant storage tank (7) contains a non-polar coolant, which is transported to the inner tube of the desorption reactor (2) via a fifth liquid pump (13). After cooling the desorption liquid, the non-polar coolant is heated and then cooled by the second heat exchanger (8) before returning to the second coolant storage tank (7). The first cooling liquid injection pool (4) contains cooling water, which is transported to the condenser (3) via the first liquid pump (9) and used to cool the gas-vapor mixed product produced after desorption through the condenser (3); the cooling water in the first cooling liquid injection pool (4) is transported to the second heat exchanger (8) via the second liquid pump (10), and used to cool the non-polar cooling liquid through the second heat exchanger (8); the cooling water in the first cooling liquid injection pool (4) is transported to the first heat exchanger (5) via the third liquid pump (11), and used to cool the desorption liquid through the first heat exchanger (5); the cooling water heated by heat exchange is returned to the first cooling liquid injection pool (4) after reflux, and then atomized by the liquid injection pump (16) provided in the first cooling liquid injection pool (4) and cooled by heat exchange with air.

6. The desorption method of a multi-field coordinated microwave liquid phase constant temperature desorption integrated system according to claim 5, characterized in that: The negative pressure includes the atmospheric pressure corresponding to the natural environment; the liquid phase desorption temperature is the boiling temperature or non-boiling temperature corresponding to the negative pressure.

7. The desorption method of a multi-field coordinated microwave liquid phase constant temperature desorption integrated system according to claim 5, characterized in that: The non-polar coolant is one of carbon tetrachloride, kerosene, heat transfer oil and transformer oil, which has non-polarity, high thermal conductivity and large specific heat properties.

8. The desorption method of a multi-field coordinated microwave liquid phase constant temperature desorption integrated system according to claim 5, characterized in that: The cold source of the condenser (3) comes from the cooling water of the first coolant injection pool (4), and the heat source comes from the gas-steam mixed product of the desorption reactor (2); the cooling water of the first coolant injection pool (4) flows through the shell side of the condenser (3), and the gas-steam mixed product of the desorption reactor (2) flows through the tube side of the condenser (3).

9. The desorption method of a multi-field coordinated microwave liquid phase constant temperature desorption integrated system according to claim 5, characterized in that: The first heat exchanger (5) has a cold source from the cooling water of the first coolant spray pool (4), and a heat source from the desorption liquid of the desorption reactor (2); the cooling water of the first coolant spray pool (4) flows through the shell side of the first heat exchanger (5), and the desorption liquid of the desorption reactor (2) flows through the tube side of the first heat exchanger (5).

10. The desorption method of a multi-field coordinated microwave liquid phase constant temperature desorption integrated system according to claim 5, characterized in that: The cooling source of the second heat exchanger (8) comes from the cooling water of the first coolant spray pool (4), and the heat source comes from the non-polar coolant of the desorption reactor (2); the cooling water of the first coolant spray pool (4) flows through the shell side of the second heat exchanger (8), and the non-polar coolant of the desorption reactor (2) flows through the tube side of the second heat exchanger (8).

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