CN116734261A - Recovery system - Google Patents

Recovery system Download PDF

Info

Publication number
CN116734261A
CN116734261A CN202210194265.4A CN202210194265A CN116734261A CN 116734261 A CN116734261 A CN 116734261A CN 202210194265 A CN202210194265 A CN 202210194265A CN 116734261 A CN116734261 A CN 116734261A
Authority
CN
China
Prior art keywords
medium
unit
treated
heat exchanger
gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210194265.4A
Other languages
Chinese (zh)
Inventor
郭嘉
许浩
陈六彪
王俊杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Technical Institute of Physics and Chemistry of CAS
Original Assignee
Technical Institute of Physics and Chemistry of CAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Technical Institute of Physics and Chemistry of CAS filed Critical Technical Institute of Physics and Chemistry of CAS
Priority to CN202210194265.4A priority Critical patent/CN116734261A/en
Publication of CN116734261A publication Critical patent/CN116734261A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/04—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste liquors, e.g. sulfite liquors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0033—Other features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F23G5/46—Recuperation of heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/50—Control or safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B27/00—Machines, plants or systems, using particular sources of energy
    • F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

The present invention provides a recovery system comprising: the device comprises a conveying unit, a heat exchange unit, a refrigerating unit and a recovery unit; the conveying unit is respectively connected with the heat exchange unit and the refrigerating unit and is used for conveying the medium to be treated to the heat exchange unit and the refrigerating unit; the heat exchange unit is respectively connected with the refrigeration unit and the recovery unit; the medium to be treated enters the heat exchange unit to exchange heat so as to realize gas-liquid separation, the separated liquid medium to be recovered flows into the recovery unit, and the separated medium to be treated flows into the refrigeration unit; the refrigeration unit utilizes heat energy generated by part of the medium to be treated conveyed by the combustion conveying unit to prepare cold energy, condenses the medium to be treated, and after gas-liquid separation, the separated liquid medium to be recovered flows into the recovery unit. According to the invention, the refrigerator is driven to provide a low-temperature environment by utilizing high-temperature heat energy generated by burning part of the medium to be treated, so that the liquefaction of the rest medium to be treated is realized, and the recovery requirement of the medium to be recovered in the medium to be treated is met.

Description

Recovery system
Technical Field
The invention relates to the technical field of energy, in particular to a recovery system.
Background
Volatile Organic Compounds (VOCs) are important precursors for the formation of ozone and PM2.5, and their emission control directly affects the ecological environment, human health and economic development. Therefore, measures are necessary to reduce the emission of VOCs.
The existing VOCs terminal treatment technology is mainly divided into a destruction technology and a recovery technology. The former mainly includes thermal oxidation, catalytic oxidation, and the like; the latter mainly includes absorption, adsorption, membrane separation and condensation. For the waste gas component with high value, the resource waste and economic loss can be caused by adopting a destroying technology; the absorption, adsorption and membrane separation recovery technology can produce secondary pollution, and has higher cost and other problems; the cooling temperature of the traditional condensation method is usually-80 ℃, the existing emission concentration limiting standard is difficult to meet, and the lower temperature needs to be designed into a multi-stage cascade mode, so that the system structure is complex.
Disclosure of Invention
The invention provides a recovery system, which is used for solving the defects that the existing VOCs end treatment technology is difficult to meet the existing emission concentration limiting standard, the system structure is complex because the existing VOCs end treatment technology is designed into a multi-stage overlapping mode when reaching lower temperature, and the liquefaction of the residual medium to be treated is realized by driving a refrigerator to provide a low-temperature environment through utilizing high-temperature heat energy generated by burning part of the medium to be treated, so that the recovery requirement of the medium to be recovered in the medium to be treated is met, the consumption of extra electric power is avoided, and the recovery system has economic benefit, environmental protection benefit and social benefit.
According to the present invention there is provided a recovery system comprising: the device comprises a conveying unit, a heat exchange unit, a refrigerating unit and a recovery unit;
the conveying unit is respectively connected with the heat exchange unit and the refrigeration unit and is used for conveying the medium to be treated to the heat exchange unit and the refrigeration unit;
the heat exchange unit is respectively connected with the refrigeration unit and the recovery unit;
the medium to be treated enters the heat exchange unit to exchange heat so as to realize gas-liquid separation, the separated liquid medium to be recovered flows into the recovery unit, and the separated medium to be treated flows into the refrigeration unit;
the refrigeration unit utilizes heat energy generated by burning part of the medium to be treated conveyed by the conveying unit to prepare cold energy, condenses the medium to be treated, and flows into the recovery unit after gas-liquid separation.
By providing the method, the high-value VOCs can be effectively recovered, and the method has economic benefit, environmental benefit and social benefit.
According to one embodiment of the invention, the heat exchange unit comprises: the device comprises a first heat exchanger, a second heat exchanger and a first gas-liquid separator;
the recovery unit includes: a condensate storage tank;
the conveying unit is respectively connected with the inlet end of the first heat exchanger and the inlet end of the refrigerating unit;
the outlet end of the first heat exchanger is connected with the inlet end of the first gas-liquid separator;
the outlet end of the first gas-liquid separator is respectively connected with the second heat exchanger and the condensate storage tank;
the refrigeration unit is connected with the second heat exchanger;
the outlet end of the second heat exchanger is connected with the condensate storage tank;
after the heat exchange of the medium to be treated is carried out by the first heat exchanger, the medium to be treated enters the first gas-liquid separator for gas-liquid separation, the separated liquid medium to be recovered flows into the condensate storage tank, and the separated medium to be treated flows into the second heat exchanger;
the medium to be treated enters the refrigeration unit to realize preparation of cold energy, the cold energy exchanges heat with the medium to be treated in the second heat exchanger, and the condensed medium to be recovered flows into the recovery unit.
Specifically, the embodiment provides an implementation mode of a heat exchange unit and a recovery unit, and recovery of a medium to be recovered is achieved by arranging a first heat exchanger, a second heat exchanger, a first gas-liquid separator and a condensate storage tank.
According to one embodiment of the invention, the refrigeration unit comprises: a combustion chamber, a hot end and a cold end;
the combustion chamber, the hot end and the cold end are sequentially connected;
wherein the combustion chamber is connected with the conveying unit;
the cold end is connected with the second heat exchanger.
Specifically, the embodiment provides an implementation manner of a refrigeration unit, by arranging a combustion chamber, part of medium to be treated is combusted in the combustion chamber, high-temperature heat energy generated by combustion is transferred to a hot end, heat energy of the hot end drives a cold end to refrigerate, and cold energy of the cold end exchanges heat with the medium to be treated flowing through a second heat exchanger, so that condensation and liquefaction of the medium to be treated flowing through the second heat exchanger are realized.
According to one embodiment of the invention, the heat exchange unit further comprises: a second gas-liquid separator;
the inlet end of the second gas-liquid separator is connected with the outlet end of the second heat exchanger, and the outlet end of the second gas-liquid separator is connected with the condensate storage tank;
and after the medium to be treated exchanges heat with the cold energy in the second heat exchanger, the medium enters the second gas-liquid separator to perform gas-liquid separation, and the separated liquid medium to be recovered flows into the condensate storage tank.
Specifically, the embodiment provides an implementation mode of a heat exchange unit, and through the arrangement of the second gas-liquid separator, gas-liquid separation is carried out on the medium to be treated, which is condensed at low temperature in the second heat exchanger, and the separated medium to be recovered flows into a condensate storage tank by means of dead weight.
According to one embodiment of the invention, the outlet end of the second gas-liquid separator is connected with the inlet end of the first heat exchanger;
the medium to be treated after gas-liquid separation in the second gas-liquid separator enters the first heat exchanger and exchanges heat with the medium to be treated from the conveying unit.
Specifically, the embodiment provides an implementation manner of the second gas-liquid separator, and the medium to be treated after passing through the second gas-liquid separator also carries a certain degree of cold energy, so that the recycling of the cold energy is realized and the system efficiency is improved by introducing the medium to be treated separated by the second gas-liquid separator into the first heat exchanger.
According to one embodiment of the present invention, further comprising: the first valve body is arranged on a pipeline for connecting the first heat exchanger and the refrigerating unit;
the medium to be treated after gas-liquid separation is in the first heat exchanger, exchanges heat with the medium to be treated flowing through, and flows back to the refrigerating unit through the adjustment of the first valve body so as to realize the energy supply for preparing the cold energy by the refrigerating unit.
Specifically, the embodiment provides an implementation manner of the first valve body, and by setting the first valve body, the medium to be treated after heat exchange in the first heat exchanger is conveyed into the combustion chamber of the refrigeration unit, so that the refrigeration energy supply of the refrigeration unit is realized.
According to one embodiment of the present invention, further comprising: the second valve body is arranged on a pipeline connecting the first heat exchanger and the external environment;
the medium to be treated after gas-liquid separation is in the first heat exchanger, and after heat exchange is carried out with the medium to be treated flowing through, the medium to be treated is discharged to the external environment through the adjustment of the second valve body.
Specifically, the embodiment provides an implementation mode of the second valve body, and by arranging the second valve body, the medium to be treated which is purified after heat exchange in the first heat exchanger is discharged to the atmosphere is realized.
According to one embodiment of the invention, the recovery unit further comprises: a third valve body and a liquid discharge pump;
the liquid discharge pump and the third valve body are arranged on a pipeline connected with the condensate storage tank and the refrigerating unit in series;
the liquid medium to be recovered stored in the condensate storage tank is conveyed to the refrigeration unit through the liquid discharge pump and the third valve body, so that the refrigeration unit is provided with cold energy.
Specifically, the embodiment provides an implementation mode of a recovery unit, and the arrangement of a liquid discharge pump realizes that part of medium to be recovered in a condensate storage tank is conveyed to a refrigeration unit, and then provides cold energy for the refrigeration unit after combustion, cools and condenses the medium to be treated, and realizes zero emission of the medium to be treated.
After the cold energy is recovered, the purified gas meeting the emission concentration requirement is used for diluting the medium to be treated of the incoming flow and enters the combustion chamber for combustion, so that the zero emission of VOCs in the recovery process can be realized.
According to one embodiment of the invention, the transport unit comprises: a fourth valve body and a fifth valve body;
the fourth valve body is arranged on a pipeline for conveying the medium to be treated to the heat exchange unit;
the fifth valve body is arranged on a pipeline for conveying the medium to be treated to the refrigerating unit;
the fourth valve body and the fifth valve body realize the adjustment of conveying the flow of the medium to be treated to the heat exchange unit and the refrigeration unit.
Specifically, the embodiment provides an implementation manner of the conveying unit, and by setting the fourth valve body and the fifth valve body, the flow of the medium to be treated conveyed by the conveying unit is adjusted, so that the flow of the medium to be treated entering the combustion chamber is matched with the flow of the medium to be treated recovered by condensation to be treated.
According to one embodiment of the invention, the transport unit further comprises: and the air blower is used for conveying the medium to be treated to the heat exchange unit and the refrigeration unit respectively.
In particular, the present embodiment provides another implementation of the conveying unit, by providing a blower, so that the medium to be treated can be conveyed to the heat exchange unit and the refrigeration unit under the action of the blower.
The above technical solutions in the present invention have at least one of the following technical effects: according to the recovery system provided by the invention, the medium to be treated is combusted as high-temperature heat energy to drive the refrigerator to provide a low-temperature environment, so that the liquefaction of the rest medium to be treated is realized, the recovery requirement of the medium to be recovered in the medium to be treated is met, the consumption of extra electric power is avoided, and the recovery system has economic benefit, environmental protection benefit and social benefit.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the layout of a recovery system provided by the invention.
Reference numerals:
10. a first heat exchanger; 11. a second heat exchanger; 20. a first gas-liquid separator; 21. a second gas-liquid separator; 30. a condensate storage tank; 40. a combustion chamber; 41. a hot end; 42. a cold end; 50. a first valve body; 60. a second valve body; 70. a third valve body; 80. a liquid discharge pump; 90. a fourth valve body; 100. a fifth valve body; 110. a blower.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In some embodiments of the invention, as shown in fig. 1, the present solution provides a recovery system comprising: the device comprises a conveying unit, a heat exchange unit, a refrigerating unit and a recovery unit; the conveying unit is respectively connected with the heat exchange unit and the refrigeration unit and is used for conveying the medium to be treated to the heat exchange unit and the refrigeration unit; the heat exchange unit is respectively connected with the refrigeration unit and the recovery unit; the medium to be treated enters the heat exchange unit to exchange heat so as to realize gas-liquid separation, the separated liquid medium to be recovered flows into the recovery unit, and the separated medium to be treated flows into the refrigeration unit; the refrigeration unit utilizes heat energy generated by part of the medium to be treated conveyed by the combustion conveying unit to prepare cold energy, cools and condenses the medium to be treated, and after gas-liquid separation, the separated liquid medium to be recovered flows into the recovery unit.
In detail, the invention provides a recovery system, which is used for solving the defects that the existing VOCs tail end treatment technology is difficult to meet the existing emission concentration limiting standard, and the system structure is complex because the tail end treatment technology is designed into a multi-stage overlapping mode when reaching lower temperature, and the recovery system utilizes high-temperature heat energy generated by burning part of to-be-treated medium to drive a refrigerator to provide a low-temperature environment, liquefies the rest to-be-treated medium, realizes recovery of the to-be-recovered medium in the rest to-be-treated medium, simultaneously avoids consuming extra electric power, and has economic benefit, environmental protection benefit and social benefit.
By providing the method, the high-value VOCs can be effectively recovered, and the method has economic benefit, environmental benefit and social benefit.
In a possible embodiment, the medium to be treated is exhaust gas.
In a possible embodiment, the medium to be treated is a high value industrial waste gas containing VOCs.
In a possible embodiment, the invention is applied in the industrial field of high temperature waste heat.
In a possible embodiment, the industrial fields of high temperature waste heat include at least industrial coating, biopharmaceutical, petrochemical and refrigeration fields, and the like.
In a possible embodiment, the invention is applied to the field of VOCs end treatment.
In a possible embodiment, the medium to be recovered is VOCs in liquid form.
In a possible implementation manner, the process flow for recovering VOCs by utilizing thermally driven low-temperature condensation provided by the invention can be applied to factory enterprises such as petrochemical industry, biopharmaceutical industry, industrial coating and the like, and even remote areas with insufficient power supply and ocean-going mail wheels.
In a possible embodiment, the process flow for recovering VOCs by thermally driven cryocondensation provided by the present invention may also be applied to the field where a portion of the gaseous fuel may be consumed to recover the remaining gas, such as oilfield associated gas.
In some possible embodiments of the invention, the heat exchange unit comprises: a first heat exchanger 10, a second heat exchanger 11 and a first gas-liquid separator 20.
The recovery unit includes: a condensate storage tank 30.
The delivery unit is connected to the inlet end of the first heat exchanger 10 and the inlet end of the refrigeration unit, respectively.
The outlet end of the first heat exchanger 10 is connected to the inlet end of the first gas-liquid separator 20.
The outlet end of the first gas-liquid separator 20 is connected to the second heat exchanger 11 and the condensate storage tank 30, respectively.
The refrigeration unit is connected to the second heat exchanger 11.
The outlet end of the second heat exchanger 11 is connected to a condensate storage tank 30.
After entering the first heat exchanger 10 for heat exchange, the medium to be treated enters the first gas-liquid separator 20 for gas-liquid separation, the separated liquid medium to be recovered flows into the condensate storage tank 30, and the separated medium to be treated flows into the second heat exchanger 11.
The medium to be treated enters a refrigeration unit to realize the preparation of cold energy, the cold energy exchanges heat with the medium to be treated in the second heat exchanger 11, and the condensed medium to be recovered flows into a recovery unit.
Specifically, the present embodiment provides an embodiment of a heat exchange unit and a recovery unit, and recovery of a medium to be treated is achieved by providing a first heat exchanger 10, a second heat exchanger 11, a first gas-liquid separator 20, and a condensate storage tank 30.
In a possible embodiment, after the medium to be treated exchanges heat by the first heat exchanger 10, the medium enters the first gas-liquid separator 20 for gas-liquid separation, and the medium to be recovered flows into the condensate storage tank 30 by means of self weight.
In a possible embodiment, the conveying unit conveys the medium to be treated to the refrigerating unit through another channel, so as to realize that the medium to be treated is used as the refrigerating unit to prepare cold energy to provide power, the refrigerating unit provides cold energy and then conveys the cold energy to the second heat exchanger 11, the gas separation medium separated in the first gas-liquid separator 20 enters the second heat exchanger 11, and after heat exchange is carried out on the gas separation medium and the cold energy, gas-liquid separation is carried out again, and the liquid medium to be treated flows into the condensate storage tank 30.
In a possible embodiment, the medium to be recovered, which is condensed in the condensate storage tank 30, is sent to the factory for re-refining by the low-temperature liquid discharge pump 80 or is sent to the combustion chamber 40 for use as fuel.
In a possible embodiment, the first heat exchanger 10 is a shell-and-tube heat exchanger.
In a possible embodiment, the second heat exchanger 11 is a gas-solid heat exchanger.
In a possible embodiment, the second heat exchanger 11 is a heat exchanger in the form of an intermediate coolant heat exchanger.
In a possible embodiment, the condensate storage tank 30 is a horizontal storage tank.
In some possible embodiments of the invention, a refrigeration unit includes: a combustion chamber 40, a hot end 41 and a cold end 42.
The combustion chamber 40, the hot end 41 and the cold end 42 are sequentially connected.
Wherein the combustion chamber 40 is connected to the delivery unit.
The cold end 42 is connected to the second heat exchanger 11.
Specifically, the embodiment provides an implementation manner of a refrigeration unit, by setting the combustion chamber 40, a part of medium to be treated is combusted in the combustion chamber 40, high-temperature heat generated by combustion is transferred to the hot end 41, heat energy of the hot end 41 drives the cold end 42 to perform refrigeration, and cold energy of the cold end 42 performs heat exchange with the medium to be treated flowing through the second heat exchanger 11, so that condensation and liquefaction of the medium to be treated flowing through are realized.
In a possible embodiment, the refrigeration unit comprises a refrigeration medium which drives the refrigerator to operate by burning high-temperature heat energy of the medium to be treated, while avoiding additional power consumption.
In a possible implementation mode, helium is adopted as the refrigerating working medium, and it is to be noted that the existing mechanical condensation recovery technology has higher refrigerating temperature, is difficult to meet the increasingly strict VOCs emission requirement, and in order to obtain lower refrigerating temperature, a multistage overlapping structure is required to be designed.
In a possible implementation manner, the refrigerating unit is a thermo-acoustic refrigerator, and natural working medium is used as the refrigerating working medium, so that the greenhouse effect caused by Freon series refrigerants can be avoided.
In a possible embodiment, the hot side 41 temperature within the refrigeration unit is maintained between 400 ℃ and 600 ℃.
In a possible embodiment, the refrigeration temperature of the cold end 42 in the refrigeration unit is matched and controlled according to the composition of the medium to be treated.
In a possible embodiment, the combustion chamber 40 in the refrigeration unit is a regenerative burner.
In a possible embodiment, the concentration of the medium to be treated entering the combustion chamber 40 needs to be diluted below the explosion limit concentration of the components, wherein the purge gas passing through the second heat exchanger 11 can be used to dilute the incoming flow of the medium to be treated after recovering the cold.
In a possible embodiment, the control of the outlet discharge concentration may set the corresponding refrigeration temperature according to the composition, satisfying the limitation of the discharge concentration.
In some possible embodiments of the invention, the heat exchange unit further comprises: a second gas-liquid separator 21.
The inlet end of the second gas-liquid separator 21 is connected with the outlet end of the second heat exchanger 11, and the outlet end of the second gas-liquid separator 21 is connected with the condensate storage tank 30.
Wherein, the medium to be treated exchanges heat with cold in the second heat exchanger 11, and then enters the second gas-liquid separator 21 to perform gas-liquid separation, and the separated liquid medium to be recovered flows into the condensate storage tank 30.
Specifically, the embodiment provides an implementation manner of the heat exchange unit, by arranging the second gas-liquid separator 21, gas-liquid separation is performed on the medium to be treated which is condensed at a low temperature in the second heat exchanger 11, and the separated medium to be recovered flows into the condensate storage tank 30 by virtue of dead weight.
In a possible embodiment, the medium to be treated is VOCs.
In a possible embodiment, the medium to be recovered is liquid VOCs.
In some possible embodiments of the invention, the outlet end of the second gas-liquid separator 21 is connected to the inlet end of the first heat exchanger 10.
Wherein the medium to be treated after gas-liquid separation in the second gas-liquid separator 21 enters the first heat exchanger 10 and exchanges heat with the medium to be treated flowing through from the conveying unit.
Specifically, the embodiment provides an implementation manner of the second gas-liquid separator 21, and the medium to be treated after passing through the second gas-liquid separator 21 also carries a certain degree of cold energy, and by introducing the medium to be treated separated by the second gas-liquid separator 21 into the first heat exchanger 10, the recycling of the cold energy is realized, and the system efficiency is improved.
In some possible embodiments of the present invention, further comprising: the first valve body 50, the first valve body 50 is set on the pipeline connecting the first heat exchanger 10 and the refrigerating unit.
The medium to be treated after gas-liquid separation exchanges heat with the medium to be treated flowing through in the first heat exchanger 10, and then flows back to the refrigeration unit through the adjustment of the first valve body 50, so as to realize the energy supply for preparing cold energy for the refrigeration unit.
Specifically, the embodiment provides an implementation manner of the first valve body 50, by setting the first valve body 50, the medium to be treated after heat exchange in the first heat exchanger 10 is conveyed into the combustion chamber 40 of the refrigeration unit, and then the refrigeration energy supply of the refrigeration unit is realized.
In a possible embodiment, the first valve body 50 is a flow regulating valve, enabling the regulation of the flow between the first heat exchanger 10 and the refrigeration unit.
In a possible embodiment, the first valve body 50 comprises at least three adjustment positions, wherein the first adjustment position corresponds to a flow of the medium to be treated of 0, the second adjustment position corresponds to a flow of the medium to be treated of maximum, and the third adjustment position corresponds to a flow of the medium to be treated of between 0 and maximum.
In some possible embodiments of the present invention, further comprising: the second valve body 60, the second valve body 60 is disposed on a pipeline connecting the first heat exchanger 10 and the external environment.
The gas-liquid separated medium to be treated exchanges heat with the medium to be treated flowing through in the first heat exchanger 10, and is discharged to the external environment through the adjustment of the second valve body 60.
Specifically, the present embodiment provides an embodiment of the second valve body 60, and by providing the second valve body 60, it is achieved that the medium to be treated which is purified after heat exchange in the first heat exchanger 10 is discharged to the atmosphere.
In a possible embodiment, the second valve body 60 is a flow regulating valve, enabling the regulation of the flow between the second heat exchanger 11 and the external environment.
In a possible embodiment, the second valve body 60 includes at least three adjustment positions, wherein the first adjustment position corresponds to a flow of the medium to be treated of 0, the second adjustment position corresponds to a flow of the medium to be treated of maximum, and the third adjustment position corresponds to a flow of the medium to be treated of between 0 and maximum.
In some possible embodiments of the invention, the recovery unit further comprises: a third valve body 70 and a liquid discharge pump 80.
The liquid discharge pump 80 and the third valve body 70 are disposed in series on a line connecting the condensate storage tank 30 and the refrigeration unit.
Wherein, part of the liquid medium to be recovered stored in the condensate storage tank 30 is delivered to the refrigeration unit through the liquid discharge pump 80 and the third valve body 70, so as to provide cold energy for the refrigeration unit.
Specifically, the embodiment provides an implementation manner of the recovery unit, and the arrangement of the liquid discharge pump 80 realizes that part of the medium to be recovered in the condensate storage tank 30 is conveyed to the refrigeration unit, so that cooling capacity is provided for the refrigeration unit after combustion, and the medium to be treated is cooled and condensed, thereby realizing zero discharge of the medium to be treated.
After recovering the cold energy, the purifying gas meeting the requirement of the emission concentration is used for diluting the medium to be treated of the incoming flow and enters the combustion chamber 40 together for combustion, so that the zero emission of VOCs in the recovery process can be realized.
In a possible embodiment, the third valve body 70 is a flow regulating valve, enabling adjustment of the flow between the condensate storage tank 30 and the refrigeration unit.
In a possible embodiment, the third valve body 70 includes at least three adjustment positions, where the first adjustment position corresponds to a flow rate of the medium to be treated of 0, the second adjustment position corresponds to a flow rate of the medium to be treated of maximum, and the third adjustment position corresponds to a flow rate of the medium to be treated of between 0 and maximum.
In a possible embodiment, the liquid VOCs collected by condensate collection tank 10 may be controlled by third valve body 70 to regulate the flow into combustor 40 to effect energization of combustor 40, depending on the desired fuel demand of combustor 40.
In a possible embodiment, the liquid VOCs collected by the condensate storage tank 30 are transported by the liquid discharge pump 80 to the factory for re-refining.
In some possible embodiments of the invention, the transport unit comprises: a fourth valve body 90 and a fifth valve body 100.
The fourth valve body 90 is arranged on a line for conveying the medium to be treated to the heat exchange unit.
The fifth valve body 100 is provided on a pipe line for feeding a medium to be treated to the refrigerating unit.
Wherein the fourth valve body 90 and the fifth valve body 100 realize the adjustment of the flow rate of the medium to be treated to the heat exchange unit and the refrigeration unit.
Specifically, the embodiment provides an implementation manner of the conveying unit, and by setting the fourth valve body 90 and the fifth valve body 100, the flow rate of the medium to be treated conveyed by the conveying unit is adjusted, so that the flow rate of the medium to be treated entering the combustion chamber 40 is matched with the flow rate of the medium to be treated recovered by condensation to be treated.
In a possible embodiment, the fourth valve body 90 and the fifth valve body 100 are flow regulating valves, enabling regulation of the flow of medium to be treated entering the first heat exchanger 10 and the refrigeration unit, respectively.
In a possible embodiment, the fourth valve body 90 and the fifth valve body 100 each include at least three adjustment positions, wherein the first adjustment position corresponds to a flow rate of the medium to be treated of 0, the second adjustment position corresponds to a flow rate of the medium to be treated of maximum, and the third adjustment position corresponds to a medium to be treated of between 0 and maximum.
In some possible embodiments of the invention, the delivery unit further comprises: blower 110, blower 110 delivers the medium to be treated to the heat exchange unit and the refrigeration unit, respectively.
Specifically, the present embodiment provides another implementation of the conveying unit, by providing the blower 110, so that the medium to be treated can be conveyed to the heat exchange unit and the refrigeration unit under the action of the blower 110.
In a possible embodiment, the medium to be treated is fed into the heat exchange unit for heat exchange under the influence of the blower 110.
In a possible embodiment, the medium to be treated is fed to a refrigeration unit for cold production under the influence of a blower 110.
In describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the embodiments of the present invention will be understood by those of ordinary skill in the art according to specific circumstances.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "manner," "particular modes," or "some modes," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or mode is included in at least one embodiment or mode of the embodiments of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or manner. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or ways. Furthermore, various embodiments or modes and features of various embodiments or modes described in this specification can be combined and combined by those skilled in the art without mutual conflict.
Finally, it should be noted that: the above embodiments are only for illustrating the present invention, and are not limiting of the present invention. While the invention has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various combinations, modifications, or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and it is intended to be covered by the scope of the claims of the present invention.

Claims (10)

1. A recycling system, comprising: the device comprises a conveying unit, a heat exchange unit, a refrigerating unit and a recovery unit;
the conveying unit is respectively connected with the heat exchange unit and the refrigeration unit and is used for conveying the medium to be treated to the heat exchange unit and the refrigeration unit;
the heat exchange unit is respectively connected with the refrigeration unit and the recovery unit;
the medium to be treated enters the heat exchange unit to exchange heat so as to realize gas-liquid separation, the separated liquid medium to be recovered flows into the recovery unit, and the separated medium to be treated flows into the refrigeration unit;
the refrigeration unit utilizes heat energy generated by burning part of the medium to be treated conveyed by the conveying unit to prepare cold energy, condenses the medium to be treated, and flows into the recovery unit after gas-liquid separation.
2. A recovery system according to claim 1, wherein the heat exchange unit comprises: the device comprises a first heat exchanger, a second heat exchanger and a first gas-liquid separator;
the recovery unit includes: a condensate storage tank;
the conveying unit is respectively connected with the inlet end of the first heat exchanger and the inlet end of the refrigerating unit;
the outlet end of the first heat exchanger is connected with the inlet end of the first gas-liquid separator;
the outlet end of the first gas-liquid separator is respectively connected with the second heat exchanger and the condensate storage tank;
the refrigeration unit is connected with the second heat exchanger;
the outlet end of the second heat exchanger is connected with the condensate storage tank;
after the heat exchange of the medium to be treated is carried out by the first heat exchanger, the medium to be treated enters the first gas-liquid separator for gas-liquid separation, the separated liquid medium to be recovered flows into the condensate storage tank, and the separated medium to be treated flows into the second heat exchanger;
the medium to be treated enters the refrigeration unit to realize preparation of cold energy, the cold energy exchanges heat with the medium to be treated in the second heat exchanger, and the condensed medium to be recovered flows into the recovery unit.
3. A recovery system in accordance with claim 2, wherein said refrigeration unit comprises: a combustion chamber, a hot end and a cold end;
the combustion chamber, the hot end and the cold end are sequentially connected;
wherein the combustion chamber is connected with the conveying unit;
the cold end is connected with the second heat exchanger.
4. A recovery system according to claim 2, wherein the heat exchange unit further comprises: a second gas-liquid separator;
the inlet end of the second gas-liquid separator is connected with the outlet end of the second heat exchanger, and the outlet end of the second gas-liquid separator is connected with the condensate storage tank;
and after the medium to be treated exchanges heat with the cold energy in the second heat exchanger, the medium enters the second gas-liquid separator to perform gas-liquid separation, and the separated liquid medium to be recovered flows into the condensate storage tank.
5. The recovery system of claim 4, wherein the outlet end of the second gas-liquid separator is connected to the inlet end of the first heat exchanger;
the medium to be treated after gas-liquid separation in the second gas-liquid separator enters the first heat exchanger and exchanges heat with the medium to be treated from the conveying unit.
6. The recovery system of claim 5, further comprising: the first valve body is arranged on a pipeline for connecting the first heat exchanger and the refrigerating unit;
the medium to be treated after gas-liquid separation is in the first heat exchanger, exchanges heat with the medium to be treated flowing through, and flows back to the refrigerating unit through the adjustment of the first valve body so as to realize the energy supply for preparing the cold energy by the refrigerating unit.
7. The recovery system of claim 5, further comprising: the second valve body is arranged on a pipeline connecting the first heat exchanger and the external environment;
the medium to be treated after gas-liquid separation is in the first heat exchanger, and after heat exchange is carried out with the medium to be treated flowing through, the medium to be treated is discharged to the external environment through the adjustment of the second valve body.
8. A recycling system according to any of claims 2 to 7, wherein the recycling unit further comprises: a third valve body and a liquid discharge pump;
the liquid discharge pump and the third valve body are arranged on a pipeline connected with the condensate storage tank and the refrigerating unit in series;
the liquid medium to be recovered stored in the condensate storage tank is conveyed to the refrigeration unit through the liquid discharge pump and the third valve body, so that the refrigeration unit is provided with cold energy.
9. A recycling system according to any of claims 1 to 7, wherein the transport unit comprises: a fourth valve body and a fifth valve body;
the fourth valve body is arranged on a pipeline for conveying the medium to be treated to the heat exchange unit;
the fifth valve body is arranged on a pipeline for conveying the medium to be treated to the refrigerating unit;
the fourth valve body and the fifth valve body realize the adjustment of conveying the flow of the medium to be treated to the heat exchange unit and the refrigeration unit.
10. The recycling system according to claim 9, wherein said conveying unit further comprises: and the air blower is used for conveying the medium to be treated to the heat exchange unit and the refrigeration unit respectively.
CN202210194265.4A 2022-03-01 2022-03-01 Recovery system Pending CN116734261A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210194265.4A CN116734261A (en) 2022-03-01 2022-03-01 Recovery system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210194265.4A CN116734261A (en) 2022-03-01 2022-03-01 Recovery system

Publications (1)

Publication Number Publication Date
CN116734261A true CN116734261A (en) 2023-09-12

Family

ID=87904836

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210194265.4A Pending CN116734261A (en) 2022-03-01 2022-03-01 Recovery system

Country Status (1)

Country Link
CN (1) CN116734261A (en)

Similar Documents

Publication Publication Date Title
CN104806313B (en) A kind of isotherm compression air energy-storage system and method
CN103534544A (en) Cryogenic air separation method and system
US11230156B2 (en) Cooling and heating system for hydrogen fuel vehicles
US9061929B2 (en) Glass melting furnace
CN102901259A (en) Double-machine double-stage compression refrigeration unit
CN101444673A (en) Low temperature high-efficient energy-saving evaporation process
CN103912385B (en) The IGCC system of integrated oxygen ion transport film oxygen-rich combustion method trapping CO2
CN100520260C (en) Reduced carbon dioxide emission system and method for providing power for refrigerant compression and electrical power for a light hydrocarbon gas liquefaction process
CN106764414A (en) A kind of LNG gasification station cold, heat and power triple supply system
CN116734261A (en) Recovery system
CN217004480U (en) Recovery system
CN115304440B (en) Mars surface carrier rocket propellant in-situ preparation integrated system and method
WO2024011780A1 (en) Low-temperature carbon capture coupling cold energy and waste heat gradient utilization system for lng-powered vessel
RU2009148393A (en) METHOD FOR PRODUCING NITRIC ACID (OPTIONS) AND UNIT FOR PRODUCING NITRIC ACID
CN103900346A (en) Method and device for liquefying carbon dioxide generated through efficient gas source heat pump in cold and hot combination mode
CN114608266B (en) Oil gas recovery device capable of rapidly refrigerating and defrosting
CN112611127B (en) Refrigerating system based on LNG
JPH0416613B2 (en)
CN209524649U (en) Superposition type air conditioner
CN110206706B (en) Gas drive compressor system with intake air cooling
CN209393027U (en) A kind of high concentration VOCs tail gas qualified discharge processing unit based on condensation catalysis oxidation
CN216986967U (en) Volatile organic compound recovery system
CN115027288B (en) On-vehicle ammonia hydrogen fuel cell based heat, electricity and cold triple supply system
CN113251814B (en) Refrigeration assisted recovery of flue gas waste heat of cement kiln for preparing high-purity CO 2 Apparatus and method of
CN106225308B (en) Class thermally driven compression-absorption heat pump

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination