CN116116356B - Evaporation equipment with heat recovery function for formaldehyde production - Google Patents

Evaporation equipment with heat recovery function for formaldehyde production Download PDF

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Publication number
CN116116356B
CN116116356B CN202310146632.8A CN202310146632A CN116116356B CN 116116356 B CN116116356 B CN 116116356B CN 202310146632 A CN202310146632 A CN 202310146632A CN 116116356 B CN116116356 B CN 116116356B
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pipe
heat
jacket
heating kettle
catalytic
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CN116116356A (en
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王辉
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Anhui Ruibai New Material Co ltd
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Anhui Ruibai New Material Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • 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
    • B01D5/0003—Condensation of vapours; Recovering volatile solvents by condensation by using heat-exchange surfaces for indirect contact between gases or vapours and the cooling medium
    • 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
    • B01D5/0051—Regulation processes; Control systems, e.g. valves
    • 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
    • B01D5/0054—General arrangements, e.g. flow sheets
    • 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
    • B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
    • 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
    • B01D5/0078—Condensation of vapours; Recovering volatile solvents by condensation characterised by auxiliary systems or arrangements
    • B01D5/0087—Recirculating of the cooling medium
    • 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
    • B01D5/0078—Condensation of vapours; Recovering volatile solvents by condensation characterised by auxiliary systems or arrangements
    • B01D5/009—Collecting, removing and/or treatment of the condensate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D7/00—Sublimation
    • B01D7/02—Crystallisation directly from the vapour phase
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006—Controlling or regulating processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006—Controlling or regulating processes
    • B01J19/0013—Controlling the temperature of the process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006—Controlling or regulating processes
    • B01J19/002—Avoiding undesirable reactions or side-effects, e.g. avoiding explosions, or improving the yield by suppressing side-reactions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0053—Details of the reactor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J4/00—Feed or outlet devices; Feed or outlet control devices
    • B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J4/00—Feed or outlet devices; Feed or outlet control devices
    • B01J4/008—Feed or outlet control devices
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/27—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation
    • C07C45/32—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen
    • C07C45/37—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of >C—O—functional groups to >C=O groups
    • C07C45/38—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of >C—O—functional groups to >C=O groups being a primary hydroxyl group
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
    • B01J2204/007—Aspects relating to the heat-exchange of the feed or outlet devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
    • B01J2219/00094—Jackets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00105—Controlling the temperature by indirect heating or cooling employing heat exchange fluids part or all of the reactants being heated or cooled outside the reactor while recycling
    • B01J2219/00108—Controlling the temperature by indirect heating or cooling employing heat exchange fluids part or all of the reactants being heated or cooled outside the reactor while recycling involving reactant vapours
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Catalysts (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

The invention discloses evaporation equipment with a heat recovery function for formaldehyde production, and belongs to the technical field of formaldehyde production. The invention comprises a base, a feeding pipe and a discharging pipe, wherein the base is provided with a heating kettle and a heat insulation shell, the heat insulation shell is covered on the outer side of the heating kettle, one end of the feeding pipe penetrates through the heat insulation shell and is connected to the bottom of the heating kettle, one end of the discharging pipe penetrates through the heat insulation shell and is connected with the top of the heating kettle, and the catalytic strip is arranged on a cross shaft and is thrown outwards under the action of centrifugal force, so that the catalytic strip mixes and stirs high-temperature gas to play a role in enhancing the catalytic efficiency of the gas, meanwhile, the catalytic strip on the cross shaft enables a lower notch ring to impact on the cross shaft under the action of inertia, deposited carbon on the surface of the catalytic strip is shaken off under the action of impact force, automatic cleaning of deposited carbon is realized, and the catalytic efficiency of the catalyst is increased.

Description

Evaporation equipment with heat recovery function for formaldehyde production
Technical Field
The invention relates to the technical field of formaldehyde production, in particular to evaporation equipment with a heat recovery function for formaldehyde production.
Background
Formaldehyde is a colorless and irritant gas, has strong irritation to eyes, nose, skin, respiratory tract and the like of people, is a well-known toxic cancerogenic substance, is harmful, can be well applied to the chemical field if utilized, is dissolved in water, is called formalin liquid, is used for soaking biological specimens and can prevent bacteria from breeding, so that the specimens are preserved for a long time, and has reducibility, can be used as raw materials of flame retardants, dyes, pesticides and disinfectant, and is prepared by oxidizing methanol at a high temperature of 600-700 ℃ to directly oxidize the methanol and the oxygen to generate a mixture of formaldehyde and water through catalysts such as silver, copper, vanadium pentoxide and the likeObject (2 CH) 3 OH+O 2 →2HCHO+2H 2 O) absorbing formaldehyde with water to obtain formaldehyde solution, and then carrying out subsequent extraction on the basis of formalin solution.
Although the porous catalyst has more active sites, the high-temperature reaction cannot achieve percent conversion, the active sites can be blocked by the generation of carbon deposit to reduce the catalytic efficiency, the carbon deposit of the catalyst cannot be cleaned in time in the existing oxidation equipment, an extra high-temperature heat source is needed in the preheating step of raw materials, the released heat energy cannot be recycled, the energy waste is caused, formaldehyde is dissolved in water generated by the reaction, and irreversible pollution can be caused to the water environment if the formaldehyde is directly discharged.
Disclosure of Invention
The invention aims to provide evaporation equipment with a heat recovery function for formaldehyde production, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides an evaporation equipment is used in formaldehyde production with heat recovery function, includes base, inlet pipe, discharging pipe, be provided with heating kettle and heat preservation shell on the base, the heat preservation shell is in the outside of heating kettle, the one end of inlet pipe runs through the heat preservation shell and connects in the bottom of heating kettle, and the mid-mounting of inlet pipe has the solenoid valve, the one end of discharging pipe runs through the heat preservation shell and is connected with heating kettle's top, and the middle part of discharging pipe is provided with the discharge pump, heating kettle's inside is provided with catalytic mechanism, the heat preservation shell is provided with heat recovery mechanism outward, be provided with clearance mechanism in the base, clearance mechanism clears up the carbon deposit in the heating kettle.
Further, the top of heat preservation shell is provided with attenuator and apron, the apron sets up the top at the attenuator, be provided with servo motor on the apron, the equipartition is provided with a plurality of elastic plate on servo motor's the motor shaft, every the one end rotation of elastic plate is installed the rubber gyro wheel, every the rubber gyro wheel contacts with the inner wall of attenuator, when using this evaporation equipment, the solenoid valve is opened and is added methyl alcohol and oxygen into the heating kettle through the inlet pipe, the heating kettle heats methyl alcohol and oxygen, be evacuated between heating kettle and the heat preservation shell, prevent the temperature excessive of heating kettle, methyl alcohol and oxygen gasifies under high temperature, servo motor drives a plurality of elastic plate and begins to rotate simultaneously, the elastic plate is through the inner wall of rubber gyro wheel to the attenuator, when the component of positive pressure is greater than the actuating torque of attenuator, the attenuator begins to rotate, the attenuator drives the cross axle and rotates, all catalytic strips on the cross axle are thrown outside under the effect of centrifugal force for catalytic strip mixes stirring to high temperature gas, play the effect of quick gas catalytic efficiency.
Further, the catalytic mechanism includes cross axle, a plurality of mounting panel, the cross axle is installed in the below of attenuator, a plurality of the mounting panel is along the axial equipartition setting of cross axle, every equipartition is provided with four catalytic strip on the mounting panel, every catalytic strip's one end is provided with the breach ring, every catalytic strip's the other end is provided with the balancing weight, every catalytic strip passes through breach ring and mounting panel swivelling joint, at servo motor drive rotatory in-process of attenuator, the gaseous formaldehyde gas and vapor of formation under catalytic strip's effect in heating kettle, catalytic strip's surface forms carbon deposit, servo motor changes direction rotation, the attenuator receives the resistance stall from the rubber gyro wheel, catalytic strip on the cross axle can not stop immediately under the effect of inertia, until the breach ring strikes on the cross axle, under the effect of impact, the carbon deposit on catalytic strip surface is shaken off, because the quantity of catalytic strip is many, the impact force direction that a plurality of breach ring was applied to the cross axle is unanimous, the attenuator rotates an angle under the effect of impact and has both made the cross ring and has been formed, catalytic strip can not take place the deformation to take place on the cross axle simultaneously to take place on the effect of the impact, the impact force can not be given out of the fact on the cross axle to the catalytic strip to the impact.
Further, the inside below of heating cauldron rotates and is provided with the cleaning tube, be provided with a plurality of disk blade on the cleaning tube, every disk blade contacts with the inside bottom surface of heating cauldron, the cleaning tube is close to the position department of heating cauldron bottom surface and has seted up a plurality of and has absorbed the hole.
Further, during the one end of cleaning tube stretches into the base, cleaning mechanism includes the worm wheel, the worm motor, the worm wheel is installed on cleaning tube, be provided with the worm on the worm motor, worm and worm wheel meshing transmission, the below of worm wheel is provided with driving bevel gear, driven bevel gear is installed in the base rotation, be provided with the gear wheel on the driven bevel gear is coaxial, still be provided with the pump in the base, the pump sets up in the one end of cleaning tube, installs the pinion on the drive shaft of pump, gear wheel and pinion meshing transmission, after catalytic reaction finishes, the bottom sediment carbon deposit of heating kettle, the worm motor drives the worm rotation, and the worm drives the worm wheel rotation, and the worm wheel drives cleaning tube rotation, and the carbon deposit of a plurality of dish type blade on the cleaning tube with the heating kettle bottom cuts off the separation, and the driving bevel gear under the worm wheel drives driven bevel gear rotation, and driven bevel gear drives the gear rotation, and the gear wheel drives the pump through the pinion and rotates, and the pump draws the gas in the cleaning tube outwards arranges, and carbon deposit then is inhaled by a plurality of suction port of bottom of the heating kettle and is discharged.
Further, the heat recovery mechanism comprises an exothermic jacket and an endothermic jacket, the exothermic jacket is sleeved outside the feeding pipe, the endothermic jacket is sleeved outside the discharging pipe, a plurality of closed through holes are formed in the feeding pipe corresponding to the exothermic jacket, heat conducting fins are arranged in the feeding pipe corresponding to the closed through holes, a plurality of closed through holes are also formed in the discharging pipe corresponding to the endothermic jacket, heat conducting fins are arranged in the discharging pipe corresponding to the endothermic jacket, after the formaldehyde reaction is finished, formaldehyde and water vapor in the heating kettle are absorbed outwards through the discharging pipe by the discharging pump, meanwhile, oxygen is injected from the bottom of the heating kettle by the feeding pipe, balance of internal pressure of the heating kettle is maintained, mixed gas temperature flowing out of the discharging pipe is high, temperature of the oxygen flowing in from the feeding pipe is low, heat of the discharging pipe is absorbed by the endothermic jacket, meanwhile, the mixed gas is cooled, the endothermic jacket is communicated with the exothermic jacket, the temperature of an input substance is increased, the input substance is preheated, heating time is shortened, the reaction efficiency is improved, the utilization of waste heat is realized, and the functions of environmental protection and energy conservation are reflected.
Further, the heat recovery mechanism comprises a cooler, an evaporation tower is arranged on the cooler, a heating plate is arranged in the evaporation tower, one end of the discharging pipe is connected with a split pipe, the lower end of the split pipe is connected with the evaporation tower, the upper end of the split pipe is connected with a collecting device, and the top of the evaporation tower is connected with the split pipe through a pipeline.
Further, the heat recovery mechanism comprises a condensation steam turbine, a scraper and a driving motor, the condensation steam turbine is rotationally arranged in the evaporation tower, the middle part of the condensation steam turbine is hollow, the scraper is slidably arranged in the evaporation tower, a spring is arranged between the scraper and the evaporation tower, the scraper is contacted with the surface of the condensation steam turbine, the driving motor is arranged outside the evaporation tower, a spiral groove shaft is arranged on a motor shaft of the driving motor, one end of the spiral groove shaft, which is far away from the driving motor, is provided with a driving gear, a tooth groove is formed in the switching position of the condensation steam turbine and the evaporation tower, the driving gear is meshed with the tooth groove, a shaft sleeve is sleeved on the spiral groove shaft, a pin is arranged at the position, which is contacted with the spiral groove shaft, of the shaft sleeve, a closed spiral groove is formed in the spiral groove shaft, the pin is slidably connected with the spiral groove, the driving motor drives the condensation steam turbine to rotate through the driving gear, formaldehyde gas in the discharging pipe moves upwards from the shunt pipe to enter the collecting device, water vapor in the discharging pipe is liquefied into water when being cooled, the shunt pipe moves downwards into the evaporation tower, the heating plate heats the water again to evaporate the water, residual formaldehyde in the water is evaporated, the driving motor simultaneously drives the spiral groove shaft to rotate, the pin slides along the sealed spiral groove, the shaft sleeve moves back and forth along the spiral groove shaft, the shaft sleeve drives the piston to move back and forth, when the piston moves towards the condensation steam turbine, liquid hydrogen in the cooler is absorbed into the hydrogen absorption pipe, when the piston moves towards the hydrogen absorption pipe, the liquid hydrogen enters the condensation steam turbine through the inside of the piston, the temperature of the condensation steam turbine is reduced, when the water vapor encounters the surface of the ice-cold condensation steam turbine, the water vapor is adhered to the surface of the condensation steam turbine to be sublimated into ice particles, gaseous formaldehyde enters the shunt tubes through the top of the evaporation tower to be collected, and when the surface of the condensation steam turbine passes through the scraper, the scraper scoops ice particles attached to the surface of the condensation steam turbine down and discharges the ice particles out of the evaporation tower.
Further, a piston is connected to the shaft sleeve, one end of the piston is slidably connected with the condensation steam turbine, the heat recovery mechanism further comprises an air inlet pipe, an excessive air pipe and an air return pipe, one end of the air inlet pipe is rotatably connected with the condensation steam turbine, the other end of the air inlet pipe is communicated with the heat absorption jacket, one end of the excessive air pipe is connected to the upper portion of the heat absorption jacket, the other end of the excessive air pipe is connected to the upper end of the heat release jacket, a compressor is arranged at the position, close to the heat release jacket, of the excessive air pipe, one end of the air return pipe is connected to the bottom end, close to the heat release jacket, of the air return pipe is connected with a cooler, a back pressure valve is arranged at the position, close to the heat release jacket, of the air return pipe is filled with liquid hydrogen, a hydrogen absorption pipe is connected between the cooler and the piston, the liquid hydrogen entering the condensation steam turbine is subjected to pressure reduction gasification after entering the heat absorption jacket, gaseous hydrogen enters the heat absorption jacket to absorb heat of the discharging pipe, then moves to the heat release jacket through the excessive air pipe, the compressor enables the hydrogen in the heat release jacket to be compressed, and the gas is compressed to release heat, and releases the heat, and when the pressure in the air is in the heat pipe and exceeds the back pressure valve, the back pressure valve enters the heat release jacket to be recycled.
Furthermore, the middle part of the piston is communicated, the piston is in sliding connection with the hydrogen absorption pipe, the piston and the hydrogen absorption pipe are both internally provided with one-way valves, and the opening directions of the two one-way valves are opposite.
Compared with the prior art, the invention has the following beneficial effects:
1. through setting up the catalytic strip on the cross axle, the catalytic strip gets rid of outside under the effect of centrifugal force for the catalytic strip mixes the stirring to high temperature gas, plays the effect that increases gaseous catalytic efficiency, and the effect of the catalytic strip on the cross axle makes down the breach ring can strike on the cross axle at inertial simultaneously, and under the effect of striking, the carbon deposit on catalytic strip surface is shaken off, has realized carrying out automatic clearance to carbon deposit, increases the catalytic efficiency of catalyst.
2. After the formaldehyde reaction is finished, the temperature of the mixed gas flowing out of the discharging pipe is higher, the temperature of the oxygen flowing in from the feeding pipe is low, the heat of the discharging pipe is absorbed by the heat absorbing jacket, meanwhile, the temperature of the mixed gas is reduced, and then the heat absorbing jacket is communicated with the heat releasing jacket, so that the heat releasing jacket heats the feeding pipe, the temperature of an input substance is increased, the input substance is preheated, the heating time is shortened, the reaction efficiency is improved, the recycling of waste heat is realized, and the functions of energy conservation and environmental protection are reflected.
3. The heating plate heats water again to evaporate water, residual formaldehyde in the water is evaporated, liquid hydrogen enters the condensation steam turbine through the inside of the piston, when the water vapor encounters the surface of the ice-cold condensation steam turbine, the water vapor adheres to the surface of the condensation steam turbine to sublimate into ice particles, gaseous formaldehyde enters the shunt tubes through the top of the evaporation tower to be collected, and the scraper shovels the ice particles adhered to the surface of the condensation steam turbine, so that the extraction of the residual formaldehyde is realized, and the pollution caused by directly discharging reaction water is avoided.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic view of the overall appearance structure of the present invention;
FIG. 2 is a schematic diagram of the overall rear view of the present invention;
FIG. 3 is a schematic view of the internal structure of the present invention;
FIG. 4 is an enlarged view of a portion of the area A of FIG. 3 in accordance with the present invention;
FIG. 5 is a schematic view of the structure of the inside of the heating kettle of the present invention;
FIG. 6 is a schematic view of the internal cross-sectional structure of the heating kettle of the present invention;
FIG. 7 is a schematic view of the structure of the damper of the present invention;
FIG. 8 is a schematic cross-sectional view of a feed tube of the present invention;
FIG. 9 is a schematic view of the connection structure of the condensing steam turbine section of the present invention;
FIG. 10 is a schematic view of the structure of a sweeper tube portion of the present invention;
in the figure: 1. a thermal insulation shell; 2. heating the kettle; 3. a feed pipe; 4. a discharge pipe; 5. a discharge pump; 6. an exothermic jacket; 7. a heat absorbing jacket; 8. a base; 9. a damper; 10. an elastic plate; 11. a servo motor; 12. rubber rollers; 13. a cross-shaped shaft; 14. a mounting plate; 15. catalytic strips; 16. a cleaning pipe; 17. a disc-shaped blade; 181. a worm wheel; 182. a worm; 19. a driven bevel gear; 20. a pump machine; 21. a cooler; 22. an evaporation tower; 23. a shunt; 24. condensing the steam turbine; 25. a scraper; 26. an air inlet pipe; 27. a transition trachea; 28. an air return pipe; 29. a driving motor; 30. a shaft sleeve; 31. and a drive gear.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
Referring to fig. 1 to 10, the present invention provides the following technical solutions: the utility model provides an evaporation equipment is used in formaldehyde production with heat recovery function, including base 8, inlet pipe 3, discharging pipe 4, be provided with heating kettle 2 and heat preservation shell 1 on the base 8, heat preservation shell 1 covers in the outside of heating kettle 2, the one end of inlet pipe 3 runs through heat preservation shell 1 and connects in the bottom of heating kettle 2, the mid-mounting of inlet pipe 3 has the solenoid valve, the one end of discharging pipe 4 runs through heat preservation shell 1 and is connected with the top of heating kettle 2, the middle part of discharging pipe 4 is provided with discharging pump 5, the inside of heating kettle 2 is provided with catalytic mechanism, be provided with heat recovery mechanism outside the heat preservation shell 1, be provided with cleaning mechanism in the base 8, cleaning mechanism clears up the carbon deposit in the heating kettle 2.
The top of heat preservation shell 1 is provided with attenuator 9 and apron, the apron sets up in the top of attenuator 9, be provided with servo motor 11 on the apron, servo motor 11's motor shaft equipartition is provided with a plurality of elastic plate 10, rubber gyro wheel 12 is installed in the one end rotation of every elastic plate 10, every rubber gyro wheel 12 contacts with the inner wall of attenuator 9, when using this evaporation equipment, the solenoid valve is opened and is added methyl alcohol and oxygen into heating cauldron 2 through inlet pipe 3, heating cauldron 2 heats methyl alcohol and oxygen, be evacuated between heating cauldron 2 and the heat preservation shell 1, prevent the temperature excessive of heating cauldron 2, methyl alcohol and oxygen gasify under high temperature, servo motor 11 drives a plurality of elastic plate 10 simultaneously and begins to rotate, elastic plate 10 applys positive pressure to the inner wall of attenuator 9 through rubber gyro wheel 12, when the component of positive pressure is greater than the actuating torque of attenuator 9, attenuator 9 begins to rotate, all catalytic strip 15 on the cross axle 13 are thrown under the effect that makes catalytic strip 15 carry out the centrifugal force to the mixed gas to mix, it is fast to make catalytic efficiency to the outside.
The catalytic mechanism comprises a cross shaft 13 and a plurality of mounting plates 14, wherein the cross shaft 13 is arranged below the damper 9, the mounting plates 14 are uniformly distributed along the axial direction of the cross shaft 13, four catalytic strips 15 are uniformly distributed on each mounting plate 14, a notch ring is arranged at one end of each catalytic strip 15, a balancing weight is arranged at the other end of each catalytic strip 15, each catalytic strip 15 is rotationally connected with the mounting plates 14 through the notch ring, the servo motor 11 drives the damper 9 to rotate, formaldehyde gas and steam are generated by gas in the heating kettle 2 under the action of the catalytic strips 15, carbon deposition is formed on the surfaces of the catalytic strips 15, the servo motor 11 changes direction to rotate, the damper 9 is stopped by resistance from the rubber roller 12, the catalytic strips 15 on the cross shaft 13 do not stop immediately under the action of inertia until the notch ring is impacted on the cross shaft 13, under the action of impact force, the carbon deposition on the surface of the catalytic strips 15 is dropped, the impact force direction of the notch ring is consistent under the action of the impact force of the catalytic strips 15, the cross shaft 9 is not only, but also the impact force of the cross shaft 13 is buffered, and the impact force of the cross shaft 13 is not deformed under the action of the impact force of the catalytic strips is easy to be applied to the impact force of the cross shaft.
The heat recovery mechanism comprises an exothermic jacket 6 and an endothermic jacket 7, the exothermic jacket 6 is sleeved outside the feeding pipe 3, the endothermic jacket 7 is sleeved outside the discharging pipe 4, a plurality of closed through holes are formed in the feeding pipe 3 corresponding to the position where the exothermic jacket 6 is sleeved, a heat conducting sheet is arranged in the feeding pipe 3 corresponding to the position where the closed through holes are formed in the position where the discharging pipe 4 corresponds to the endothermic jacket 7, a plurality of closed through holes are also formed in the discharging pipe 4 corresponding to the position where the endothermic jacket 7 is sleeved, the heat conducting sheet is arranged in the discharging pipe 4 corresponding to the position where the closed through holes are formed, the heat recovery mechanism comprises a cooler 21, an evaporation tower 22 is arranged on the cooler 21, a heating plate is arranged in the evaporation tower 22, one end of the discharging pipe 4 is connected with a shunt pipe 23, the lower end of the shunt pipe 23 is connected with the evaporation tower 22, the upper end of the shunt pipe 23 is connected with a collecting device, the top of the evaporation tower 22 is connected with the shunt pipe 23 through a pipeline, the heat recovery mechanism comprises a condensation steam turbine 24, a scraper 25 and a driving motor 29, wherein the condensation steam turbine 24 is rotationally arranged in an evaporation tower 22, the middle of the condensation steam turbine 24 is hollow, the scraper 25 is slidably mounted in the evaporation tower 22, a spring is arranged between the scraper 25 and the evaporation tower 22, the scraper 25 is contacted with the surface of the condensation steam turbine 24, the driving motor 29 is arranged outside the evaporation tower 22, a spiral groove shaft is arranged on a motor shaft of the driving motor 29, one end of the spiral groove shaft, far away from the driving motor 29, is provided with a driving gear 31, a tooth slot is formed in the switching position of the condensation steam turbine 24 and the evaporation tower 22, the driving gear 31 is meshed with the tooth slot, a shaft sleeve 30 is sleeved on the spiral groove shaft, a pin is arranged at the contact position of the shaft sleeve 30 and the spiral groove shaft, and a closed spiral groove is formed in the spiral groove shaft, and the pin is slidably connected with the spiral groove.
After the formaldehyde reaction is finished, the discharging pump 5 sucks formaldehyde and water vapor in the heating kettle 2 outwards through the discharging pipe 4, meanwhile, the feeding pipe 3 injects oxygen from the bottom of the heating kettle 2, the balance of the pressure in the heating kettle 2 is maintained, the temperature of the mixed gas flowing out of the discharging pipe 4 is higher, the temperature of the oxygen flowing in from the feeding pipe 3 is low, the heat of the discharging pipe 4 is absorbed by the heat absorbing jacket 7, the mixed gas is cooled, then the heat absorbing jacket 7 is communicated with the heat releasing jacket 6, the heat releasing jacket 6 heats the feeding pipe 3, the temperature of the input substances is increased, the input substances are preheated, the heating time is shortened, the reaction efficiency is improved, the recycling of waste heat is realized, the energy-saving and environment-friendly functions are realized, the condensing steam turbine 24 is driven to rotate by the driving motor 29 through the driving gear 31, the formaldehyde gas in the discharging pipe 4 moves upwards from the shunt pipe 23 to enter the collecting device, the water vapor in the discharging pipe 4 is liquefied into water when encountering cold, the water is downwards moved into the evaporation tower 22 from the flow pipe 23, the heating plate heats the water again to evaporate the water, residual formaldehyde in the water is evaporated, the driving motor 29 drives the spiral groove shaft to rotate, the pin slides along the closed spiral groove, the shaft sleeve 30 moves back and forth along the spiral groove shaft, the shaft sleeve 30 drives the piston to move back and forth, when the piston moves towards the condensation steam turbine 24, the liquid hydrogen in the cooler 21 is absorbed into the hydrogen absorption pipe, when the piston moves towards the hydrogen absorption pipe, the liquid hydrogen enters the condensation steam turbine 24 through the inside of the piston, the temperature of the condensation steam turbine 24 is reduced, when the water vapor encounters the surface of the ice-cooled condensation steam turbine 24, the water vapor is adhered to the surface of the condensation steam turbine 24 to be sublimated into ice particles, and the gaseous formaldehyde enters the flow distribution pipe 23 through the top of the evaporation tower 22 to be collected, when the surface of the condensing turbine 24 passes by the scraper 25, the scraper 25 scoops down the ice particles attached to the surface of the condensing turbine 24 and discharges the ice particles out of the evaporation tower 22.
The heat recovery mechanism further comprises an air inlet pipe 26, an excessive air pipe 27 and an air return pipe 28, one end of the air inlet pipe 26 is rotatably connected with the condensation steam turbine 24, the other end of the air inlet pipe 26 is communicated with the heat absorption jacket 7, one end of the excessive air pipe 27 is connected to the upper part of the heat absorption jacket 7, the other end of the excessive air pipe 27 is connected to the upper end of the heat release jacket 6, a compressor is arranged on the excessive air pipe 27 at a position close to the heat release jacket 6, the compressor is arranged on the heat insulation shell 1, one end of the air return pipe 28 is connected to the bottom end close to the heat release jacket 6, the other end of the air return pipe 28 is connected with the cooler 21, a back pressure valve is arranged at a position close to the heat release jacket 6, liquid hydrogen is filled in the cooler 21, a hydrogen absorption pipe is connected between the cooler 21 and the piston, the middle of the piston is communicated with the hydrogen absorption pipe in a sliding mode, the piston and the hydrogen absorption pipe are both provided with one-way valves, the opening directions of the two one-way valves are opposite, the liquid hydrogen in the condensation steam turbine 24 is reduced in pressure after passing through the air inlet pipe 26, the gaseous hydrogen enters the heat absorption jacket 7, the heat absorption pipe 4, the heat is compressed by the excessive air return pipe 28, the heat is compressed by the heat absorption jacket 6, the heat is discharged from the heat absorption jacket 6 is compressed by the heat absorption jacket 6, and the heat is recovered by the heat release jacket 6, the heat is discharged from the heat absorption jacket is compressed by the heat-absorbing gas, and the heat is discharged by the heat-absorbing gas, and the heat is recovered by the heat-absorbing gas, and the heat is discharged through the heat-absorbing heat and the heat-absorbing pipe and is recovered.
The cleaning tube 16 is rotatably arranged below the inside of the heating kettle 2, a plurality of disc-shaped blades 17 are arranged on the cleaning tube 16, each disc-shaped blade 17 is contacted with the bottom surface inside the heating kettle 2, a plurality of sucking holes are formed in the position, close to the bottom surface of the heating kettle 2, of the cleaning tube 16, one end of the cleaning tube 16 extends into the base 8, the cleaning mechanism comprises a worm wheel 181, a worm motor, the worm wheel 181 is arranged on the cleaning tube 16, a worm 182 is arranged on the worm motor, the worm 182 is meshed with the worm wheel 181 for transmission, a driving bevel gear is arranged below the worm wheel 181, a driven bevel gear 19 is rotatably arranged in the base 8, a large gear is coaxially arranged on the driven bevel gear 19, a pump 20 is further arranged in the base 8, the pump 20 is arranged at one end of the cleaning tube 16, the pinion is arranged on the driving shaft of the pump 20, the large gear is meshed with the pinion for transmission, after the catalytic reaction is finished, carbon deposition is deposited at the bottom of the heating kettle 2, the worm motor drives the worm 182 to rotate, the worm 182 drives the worm wheel 181 to rotate, the worm wheel 181 drives the cleaning pipe 16 to rotate, a plurality of disc-shaped blades 17 on the cleaning pipe 16 cut off and separate the carbon deposition at the bottom of the heating kettle 2, a driving bevel gear under the worm wheel 181 drives a driven bevel gear 19 to rotate, the driven bevel gear 19 drives the large gear to rotate, the large gear drives the pump 20 to rotate through the pinion, the pump 20 pumps gas in the cleaning pipe 16 to be discharged outwards, and the carbon deposition is sucked through a plurality of sucking holes at the bottom surface of the cleaning pipe 16 to completely discharge the carbon deposition at the bottom of the heating kettle 2.
The working principle of the invention is as follows: when the evaporation equipment is used, the electromagnetic valve is opened, methanol and oxygen are added into the heating kettle 2 through the feeding pipe 3, the heating kettle 2 heats the methanol and the oxygen, vacuumizing is carried out between the heating kettle 2 and the heat insulation shell 1, the temperature overflow of the heating kettle 2 is prevented, the methanol and the oxygen are gasified at high temperature, meanwhile, the servo motor 11 drives the plurality of elastic plates 10 to start rotating, the elastic plates 10 apply positive pressure to the inner wall of the damper 9 through the rubber rollers 12, when the component force of the positive pressure is larger than the starting torque of the damper 9, the damper 9 starts rotating, the damper 9 drives the cross shaft 13 to rotate, all catalytic strips 15 on the cross shaft 13 are thrown outwards under the action of centrifugal force, so that the catalytic strips 15 mix and stir high-temperature gas, and the effect of accelerating the catalytic efficiency of the gas is achieved.
In the process that the servo motor 11 drives the damper 9 to rotate, formaldehyde gas and steam are generated by gas in the heating kettle 2 under the action of the catalytic strips 15, carbon deposition is formed on the surfaces of the catalytic strips 15, the servo motor 11 changes direction to rotate, the damper 9 is stopped by resistance from the rubber roller 12, the catalytic strips 15 on the cross shaft 13 cannot immediately stop under the action of inertia until the notch rings impact on the cross shaft 13, the carbon deposition on the surfaces of the catalytic strips 15 is shocked off under the action of the impact force, the impact force directions of a plurality of notch rings applied on the cross shaft 13 are consistent due to the fact that the number of the catalytic strips 15 is large, the damper 9 rotates for an angle under the action of the impact force to buffer, so that the notch rings impact on the cross shaft 13 can shock off the carbon deposition on the catalytic strips 15, meanwhile, the force of a plurality of catalytic strips 15 applied on the cross shaft 13 can be buffered, and the cross shaft 13 is not easily deformed under the impact load.
After the formaldehyde reaction is finished, the discharging pump 5 sucks formaldehyde and water vapor in the heating kettle 2 outwards through the discharging pipe 4, meanwhile, the feeding pipe 3 injects oxygen from the bottom of the heating kettle 2, the balance of the pressure in the heating kettle 2 is maintained, the temperature of the mixed gas flowing out of the discharging pipe 4 is higher, the temperature of the oxygen flowing in from the feeding pipe 3 is low, the heat of the discharging pipe 4 is absorbed by the heat absorbing jacket 7, the mixed gas is cooled, then the heat absorbing jacket 7 is communicated with the heat releasing jacket 6, the heat releasing jacket 6 heats the feeding pipe 3, the temperature of the input substances is increased, the input substances are preheated, the heating time is shortened, the reaction efficiency is improved, the recycling of waste heat is realized, the energy-saving and environment-friendly functions are realized, the condensing steam turbine 24 is driven to rotate by the driving motor 29 through the driving gear 31, the formaldehyde gas in the discharging pipe 4 moves upwards from the shunt pipe 23 to enter the collecting device, the water vapor in the discharging pipe 4 is liquefied into water when encountering cold, the water is downwards moved into the evaporation tower 22 from the flow pipe 23, the heating plate heats the water again to evaporate the water, residual formaldehyde in the water is evaporated, the driving motor 29 drives the spiral groove shaft to rotate, the pin slides along the closed spiral groove, the shaft sleeve 30 moves back and forth along the spiral groove shaft, the shaft sleeve 30 drives the piston to move back and forth, when the piston moves towards the condensation steam turbine 24, the liquid hydrogen in the cooler 21 is absorbed into the hydrogen absorption pipe, when the piston moves towards the hydrogen absorption pipe, the liquid hydrogen enters the condensation steam turbine 24 through the inside of the piston, the temperature of the condensation steam turbine 24 is reduced, when the water vapor encounters the surface of the ice-cooled condensation steam turbine 24, the water vapor is adhered to the surface of the condensation steam turbine 24 to be sublimated into ice particles, and the gaseous formaldehyde enters the flow distribution pipe 23 through the top of the evaporation tower 22 to be collected, when the surface of the condensing turbine 24 passes by the scraper 25, the scraper 25 scoops down the ice particles attached to the surface of the condensing turbine 24 and discharges the ice particles out of the evaporation tower 22.
The liquid hydrogen entering into the condensation steam turbine 24 is gasified by pressure reduction after passing through the air inlet pipe 26, gaseous hydrogen enters into the heat absorption jacket 7 to absorb heat of the discharge pipe 4, then moves to the heat release jacket 6 through the transition air pipe 27, the hydrogen in the heat release jacket 6 is compressed by the compressor, the heat heating feed pipe 3 is released by gas compression, after the pressure in the heat release jacket 6 exceeds the pressure of the back pressure valve, the gas enters into the air return pipe 28 from the heat release jacket 6, the hydrogen for completing heat exchange work finally returns to the cooler 21 to realize heat recovery circulation of the hydrogen, after the catalytic reaction is finished, carbon deposit at the bottom of the heating kettle 2, the worm motor drives the worm 182 to rotate, the worm 182 drives the worm wheel 181 to rotate, the worm wheel 181 drives the cleaning pipe 16 to cut off and separate the carbon deposit at the bottom of the heating kettle 2, the driving bevel gear 19 under the worm wheel 181 drives the driven bevel gear 19 to rotate, the large gear is driven bevel gear 19 drives the pump 20 to rotate, the gas in the pump 20 is discharged outwards, and the carbon deposit is sucked into a plurality of suction holes at the bottom of the cleaning pipe 16 to completely heat the carbon deposit at the bottom of the heating kettle 2.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (3)

1. Evaporation equipment with heat recovery function for formaldehyde production, its characterized in that: including base (8), inlet pipe (3), discharging pipe (4), be provided with heating kettle (2) and heat preservation shell (1) on base (8), heat preservation shell (1) cover is in the outside of heating kettle (2), the one end of inlet pipe (3) runs through heat preservation shell (1) and connects in the bottom of heating kettle (2), and the mid-mounting of inlet pipe (3) has the solenoid valve, the one end of discharging pipe (4) runs through heat preservation shell (1) and is connected with the top of heating kettle (2), and the middle part of discharging pipe (4) is provided with discharge pump (5), the inside of heating kettle (2) is provided with catalytic unit, be provided with heat recovery mechanism outside heating kettle (1), be provided with cleaning mechanism in base (8), cleaning mechanism clear up the long-pending carbon in heating kettle (2);
the top of the heat preservation shell (1) is provided with a damper (9) and a cover plate, the cover plate is arranged above the damper (9), a servo motor (11) is arranged on the cover plate, a plurality of elastic plates (10) are uniformly distributed on a motor shaft of the servo motor (11), one end of each elastic plate (10) is rotatably provided with a rubber roller (12), and each rubber roller (12) is in contact with the inner wall of the damper (9);
the catalytic mechanism comprises a cross shaft (13) and a plurality of mounting plates (14), wherein the cross shaft (13) is arranged below the damper (9), the mounting plates (14) are uniformly distributed along the axial direction of the cross shaft (13), four catalytic strips (15) are uniformly distributed on each mounting plate (14), a notch ring is arranged at one end of each catalytic strip (15), a balancing weight is arranged at the other end of each catalytic strip (15), and each catalytic strip (15) is rotationally connected with the mounting plate (14) through the notch ring;
the heat recovery mechanism comprises an exothermic jacket (6) and a heat absorption jacket (7), the exothermic jacket (6) is sleeved on the outer side of the feeding pipe (3), the heat absorption jacket (7) is sleeved on the outer side of the discharging pipe (4), a plurality of closed through holes are formed in the feeding pipe (3) corresponding to the position where the exothermic jacket (6) is sleeved, heat conducting fins are arranged in the feeding pipe (3) corresponding to the position where the through holes are closed, a plurality of closed through holes are also formed in the discharging pipe (4) corresponding to the position where the heat absorption jacket (7) is sleeved, and heat conducting fins are arranged in the discharging pipe (4) corresponding to the position where the through holes are closed;
the heat recovery mechanism comprises a cooler (21), an evaporation tower (22) is arranged on the cooler (21), a heating plate is arranged in the evaporation tower (22), one end of the discharging pipe (4) is connected with a shunt pipe (23), the lower end of the shunt pipe (23) is connected with the evaporation tower (22), the upper end of the shunt pipe (23) is connected with a collecting device, and the top of the evaporation tower (22) is connected with the shunt pipe (23) through a pipeline;
the heat recovery mechanism comprises a condensation steam turbine (24), a scraper (25) and a driving motor (29), wherein the condensation steam turbine (24) is rotationally arranged in an evaporation tower (22), the middle part of the condensation steam turbine (24) is hollow, the scraper (25) is slidably arranged in the evaporation tower (22), a spring is arranged between the scraper (25) and the evaporation tower (22), the scraper (25) is contacted with the surface of the condensation steam turbine (24), the driving motor (29) is arranged outside the evaporation tower (22), a spiral groove shaft is arranged on a motor shaft of the driving motor (29), a driving gear (31) is arranged at one end, far away from the driving motor (29), of the spiral groove shaft, a tooth groove is formed in the switching position of the condensation steam turbine (24) and the evaporation tower (22), the driving gear (31) is meshed with the tooth groove, a shaft sleeve (30) is sleeved on the spiral groove shaft, a pin is arranged at the position, which is contacted with the spiral groove shaft, and a closed spiral groove is slidably connected with the pin;
the heat recovery mechanism comprises a shaft sleeve (30), and is characterized in that a piston is connected to the shaft sleeve (30), one end of the piston is slidably connected with a condensation steam turbine (24), the heat recovery mechanism further comprises an air inlet pipe (26), an air passing pipe (27) and an air returning pipe (28), one end of the air inlet pipe (26) is rotationally connected with the condensation steam turbine (24), the other end of the air inlet pipe (26) is communicated with a heat absorbing jacket (7), one end of the air passing pipe (27) is connected to the upper part of the heat absorbing jacket (7), the other end of the air passing pipe (27) is connected to the upper end of the heat releasing jacket (6), a compressor is arranged on the air passing pipe (27) at a position close to the heat releasing jacket (6), the compressor is arranged on a heat insulating shell (1), one end of an air returning pipe (28) is connected to the bottom end close to the heat releasing jacket (6), the other end of the air returning pipe (28) is connected with a cooler (21), a back pressure valve is arranged at a position close to the heat releasing jacket (6), liquid hydrogen is filled in the cooler (21), and a hydrogen absorbing pipe is connected between the cooler (21) and the piston.
The middle part of the piston is communicated, the piston is in sliding connection with the hydrogen absorption pipe, the piston and the hydrogen absorption pipe are both internally provided with one-way valves, and the opening directions of the two one-way valves are opposite.
2. The evaporation apparatus for formaldehyde production with heat recovery function according to claim 1, wherein: the cleaning device is characterized in that a cleaning pipe (16) is rotatably arranged below the inner portion of the heating kettle (2), a plurality of disc-shaped blades (17) are arranged on the cleaning pipe (16), each disc-shaped blade (17) is in contact with the inner bottom surface of the heating kettle (2), and a plurality of sucking holes are formed in the position, close to the bottom surface of the heating kettle (2), of the cleaning pipe (16).
3. The evaporation apparatus for formaldehyde production with heat recovery function according to claim 2, wherein: the cleaning mechanism comprises a worm wheel (181), a worm motor, the worm wheel (181) is arranged on the cleaning tube (16), a worm (182) is arranged on the worm motor, the worm (182) is in meshed transmission with the worm wheel (181), a driving bevel gear is arranged below the worm wheel (181), a driven bevel gear (19) is rotatably arranged on the base (8), a large gear is coaxially arranged on the driven bevel gear (19), a pump (20) is further arranged in the base (8), the pump (20) is arranged at one end of the cleaning tube (16), and a pinion is arranged on a driving shaft of the pump (20) and is in meshed transmission with the pinion.
CN202310146632.8A 2023-02-22 2023-02-22 Evaporation equipment with heat recovery function for formaldehyde production Active CN116116356B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2610063A1 (en) * 1976-03-11 1977-09-15 Schmidt Hans Guenter Ing Grad Waste or ambient heat recovery - using solar energy collector, heat pump, vortex tube divider and compressor
KR19980032121A (en) * 1996-10-16 1998-07-25 최창균 Heat exchange type distillation method using refrigeration circuit and its device
CN106237635A (en) * 2016-08-02 2016-12-21 吉首大学 The material filling type heat pump high-efficiency evaporating enrichment facility that capacity automatically controls
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