CN111821705A - Electromagnetic induction low-temperature or high-boiling-point evaporation concentrator and evaporation concentration process thereof - Google Patents
Electromagnetic induction low-temperature or high-boiling-point evaporation concentrator and evaporation concentration process thereof Download PDFInfo
- Publication number
- CN111821705A CN111821705A CN202010832441.3A CN202010832441A CN111821705A CN 111821705 A CN111821705 A CN 111821705A CN 202010832441 A CN202010832441 A CN 202010832441A CN 111821705 A CN111821705 A CN 111821705A
- Authority
- CN
- China
- Prior art keywords
- liquid
- chamber
- evaporation
- pump
- heating
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0011—Heating features
- B01D1/0017—Use of electrical or wave energy
- B01D1/0023—Induction heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0011—Heating features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0088—Cascade evaporators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention belongs to the technical field of evaporation concentrators, and particularly relates to an electromagnetic induction low-temperature or high-boiling-point evaporation concentrator which comprises an intermediate evaporation chamber, a liquid supplementing device, a first heating device and a second heating device, wherein the liquid supplementing device is used for supplementing water to the intermediate evaporation chamber, the first heating device is arranged on the intermediate evaporation chamber, the second heating device is arranged on a pipeline of a secondary steam outlet of the intermediate evaporation chamber, and secondary steam generated by the intermediate evaporation chamber is used as a heat source of evaporation equipment. Has the advantages that: the invention changes the equipment structure and the process flow on the basis of the original MVR, and the water in the intermediate evaporation chamber is heated to convert and exchange energy between a liquid phase and a vapor phase and a liquid phase.
Description
Technical Field
The invention belongs to the technical field of evaporation concentrators, and particularly relates to an electromagnetic induction low-temperature or high-boiling-point evaporation concentrator and an evaporation concentration process thereof.
Background
The evaporation concentrator plays a very important role in the production links of the industries such as traditional Chinese medicine, food, chemical industry, seawater desalination, zero discharge of wastewater and the like. MVR evaporation concentrator, is the abbreviation of English mechanical vapor compression. MVR is a technique of reusing the energy of secondary steam generated by itself, thereby reducing the demand for external energy. The secondary steam is compressed by the compressor, the pressure and temperature are raised, the enthalpy is increased, and the secondary steam is sent to the heating chamber of the evaporation concentrator to be used as heating steam, namely, generating steam, so that the feed liquid is maintained in an evaporation state, and the heating steam transfers the heat to the material to be condensed into water. Therefore, the steam which is originally discarded is fully utilized, the latent heat is recovered, and the heat efficiency is improved.
The existing MVR evaporation concentrator has the following defects and shortcomings:
1. the evaporation capacity of the MVR evaporation concentrator is limited by the steam density, namely the higher the evaporation temperature is, the higher the steam density is, the larger the evaporation capacity is; 2. materials in certain industries need to be evaporated and concentrated at low temperature (such as below 78 ℃), like certain traditional Chinese medicines and organisms, the original characteristics and structure of the materials can be damaged after the temperature is high, and the process requirements cannot be met; 3. for example, in zero-discharge evaporation and concentration of wastewater, the concentration ratio of substances with larger specific gravity of fresh materials is small at the beginning, so the boiling point rise is small, the substances are always circulated in the system and cannot be taken out, and after the evaporation time is long, the concentration of the substances is higher and higher, and the evaporation capacity is lower and lower under the same energy consumption. Like MVR, only the fresh material can be replaced with the material in the system and concentrated using high temperature vapor pressure. Like the traditional Chinese medicine industry, the boiling point rise is higher when the sugar content is higher; 4. like evaporation requiring low temperature evaporation and boiling point elevation, MVR evaporation and concentration can only be improved by increasing the compression ratio of the compressor and increasing the area of the heat exchanger, and the cost is increased but the problem is not solved.
Disclosure of Invention
The invention provides an electromagnetic induction low-temperature or high-boiling-point evaporation concentrator and an evaporation concentration process thereof, aiming at solving the problem that the MVR evaporation concentrator in the prior art is limited by the characteristics of materials and has limitation when the boiling point is increased relatively or low-temperature evaporation is required.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows, and the low-temperature or high-boiling-point evaporation concentration process comprises the following steps:
s 1: the first heating device heats the water in the intermediate evaporation chamber to generate steam;
s 2: the second heating device continuously heats and pressurizes the secondary steam at the secondary steam outlet of the intermediate evaporation chamber;
s 3: introducing the secondary steam generated in the step s2 into evaporation equipment as a heat source of the evaporation equipment;
s 4: and when the water in the intermediate evaporation chamber is consumed to a set value, the liquid replenishing device replenishes water to the intermediate evaporation chamber, and the steps s1 to s3 are repeated.
Preferably, the evaporation apparatus includes a heat exchanger, an evaporation chamber, a heating chamber, a condensate tank, a feed liquid circulating pump, a feed tank, a raw liquid pump, a concentrate pump, a condensate pump, and a vacuum pump, and the step s3 includes the steps of:
s 31: the vacuum pump is used for vacuumizing the shell pass of the heating chamber, so that the secondary steam generated in the step s2 is introduced into the shell pass of the heating chamber, meanwhile, the stock solution pump is used for pumping stock solution in the stock solution tank into the preheating coil pipe of the condensate tank for preheating, the feed solution circulating pump is used for pumping feed solution in the preheating coil pipe to the tube pass of the heating chamber, and the secondary steam in the shell pass of the heating chamber exchanges heat with feed solution in the tube pass of the heating chamber;
s 32: the feed liquid heated by the secondary steam in the tube pass of the heating chamber flows to the evaporation chamber from a lower end socket liquid outlet of the heating chamber, meanwhile, the mixed feed liquid of a vapor phase and a liquid phase also flows to the evaporation chamber from a vapor-liquid balance outlet of the heating chamber, and the feed liquid circulating pump pumps the feed liquid with low concentration at the upper part in the evaporation chamber to the tube pass of the heating chamber for circulation, so that the feed liquid maintains an evaporation state; simultaneously, a vacuum pump vacuumizes the intermediate evaporation chamber and the condensate tank, condensate water formed by secondary steam in the shell pass of the heating chamber and the secondary steam in the evaporation chamber enter the heat exchanger through the gas-liquid separator for heat exchange, part of the condensate water in the heat exchanger flows to the intermediate evaporation chamber, and the other part of the condensate water flows to the condensate tank for heating the preheating coil;
s 33: and repeating the step s31 to the step s 32.
Further, the evaporation apparatus further comprises a concentrate pump and a condensate pump, and the step s3 further comprises a step s 34: the concentrated liquid pump is used for discharging concentrated feed liquid in the evaporating chamber, and the condensate pump is used for discharging condensate in the condensate tank.
The electromagnetic induction low-temperature or high-boiling-point evaporation concentrator adopted by the low-temperature or high-boiling-point evaporation concentration process comprises an intermediate evaporation chamber, a liquid supplementing device, a first heating device and a second heating device, wherein the liquid supplementing device is used for supplementing water for the intermediate evaporation chamber, the first heating device is arranged on the intermediate evaporation chamber, the second heating device is arranged on a pipeline of a secondary steam outlet of the intermediate evaporation chamber, and secondary steam generated by the intermediate evaporation chamber is used as a heat source of evaporation equipment.
Preferably, the first heating device and the second heating device both comprise a magnetic conductive circular tube and an induction coil, the induction coil is wound on the magnetic conductive circular tube, and the induction coil is connected with an alternating current induction power supply; the magnetic conduction round pipe of the first heating device is sleeved on the lower part of the middle evaporation chamber, and the magnetic conduction round pipe of the second heating device is sleeved on the pipeline of the secondary steam outlet of the middle evaporation chamber. The electromagnetic induction heating is adopted to replace the compressor heating, so that the cost is greatly reduced, the energy consumption is saved, the noise is reduced, the efficiency is higher, and the safety and the reliability are realized.
Preferably, the magnetic conduction round pipe is wrapped with the silicate cotton, the silicate cotton is located between the magnetic conduction round pipe and the induction coil, the induction coil is a high-temperature cable, the induction coil is wound and fixed by a high-temperature adhesive tape or an aluminum foil adhesive tape, and the first heating device and the second heating device are both packaged by a stainless steel shell. Alternating current flowing through induction coil produces an alternating magnetic field through the magnetic conduction pipe, this magnetic field makes the magnetic conduction pipe produce the vortex and heats, the aluminium foil sticky tape still has the effect that prevents the magnetic leakage, stainless steel that the material majority because of current evaporative concentrator adopted carbon composition to hang down, duplex steel and titanium material, magnetic conductivity is poor, consequently just heating efficiency is low, energy consumption loss is big, increase equipment input cost, stainless steel 410 is chooseed for use to the material of the magnetic conduction pipe of this application, stainless steel 410's carbon composition content is high, establish the magnetic conduction pipe cover in this evaporative concentrator need the place of heating in order to solve this problem, heating device's heating is effectual, it is effectual to keep warm, safe and reliable in utilization, prolong first heating device and second heating device's life.
Preferably, the magnetic conductive circular tube and the shell are both of split structures. Convenient disassembly and maintenance and replacement.
Further, the liquid supplementing device comprises a liquid supplementing circulating pump, a feed inlet of the liquid supplementing circulating pump is respectively connected with a water source and a liquid outlet of the middle evaporation chamber, and a discharge outlet of the liquid supplementing circulating pump is connected with a liquid inlet of the middle evaporation chamber.
Further, the evaporation equipment comprises a heat exchanger, an evaporation chamber, a heating chamber, a condensate tank, a feed liquid circulating pump, a raw material tank, a raw material pump and a vacuum pump, wherein a preheating coil is arranged in the condensate tank, the raw material pump is used for pumping raw liquid in the raw material tank to the preheating coil, a feed inlet of the feed liquid circulating pump is respectively communicated with circulating ports of the preheating coil and a steam chamber, a discharge outlet of the feed liquid circulating pump is communicated with a tube pass of the heating chamber, a lower head liquid outlet, a vapor-liquid balance outlet and a condensate outlet are sequentially arranged on the heating chamber from bottom to top, the lower head liquid outlet and the vapor-liquid balance outlet of the heating chamber are both communicated with the evaporation chamber, a condensate outlet of the heating chamber is communicated with a liquid inlet of the heat exchanger, a secondary steam outlet of the evaporation chamber is communicated with a vapor inlet of the heat exchanger through a vapor, a second liquid outlet of the heat exchanger is communicated with a condensate tank, and a secondary steam outlet of the intermediate evaporation chamber is communicated with a shell pass of the heating chamber; the middle evaporation chamber, the heating chamber and the condensate tank are all connected with a vacuum pump. The temperature of the condensed water after the heat exchange of the secondary steam generated by the evaporation chamber and the condensed water generated by the heating chamber through the heat exchanger is increased, the condensed water flows to the middle evaporation chamber and the condensed liquid tank respectively, the heat is recycled, the energy consumption is reduced, the cost is reduced, and the working efficiency of the electromagnetic induction low-temperature or high-boiling-point evaporation concentrator is improved.
Furthermore, the evaporation equipment also comprises a concentrated liquid pump and a condensed liquid pump, and the concentrated liquid pump is connected with a discharge hole of the evaporation chamber; and the condensate pump is connected with a condensate outlet of the condensate tank.
Has the advantages that: the existing MVR evaporation concentration is mechanically heated and pressurized on the basis of secondary steam of a material, is restricted by the characteristics of the material, and has limitations when the boiling point rise is high or low-temperature evaporation is required; the invention relates to an electromagnetic induction low-temperature or high-boiling point evaporation concentrator and an evaporation concentration process thereof, which are realized by changing the structure and the process flow of equipment on the basis of the original MVR and adding an intermediate evaporation chamber and a heat exchanger, wherein water in the intermediate evaporation chamber is heated to continuously convert and exchange energy between a liquid phase and a vapor phase and a liquid phase; when the materials are evaporated at low temperature, the heat source and the heated source are separated independently, and only the heat source and the heated source are in short-time contact inside and outside the tubes of the heating chamber, so that the materials are not influenced even if the heat source is high in temperature and the contact time is short; the electromagnetic induction low-temperature or high-boiling-point evaporation concentrator is safe and reliable when used for evaporating and concentrating organic solvents: the secondary steam is also flammable and explosive steam, when the existing MVR is used for evaporation and concentration, the steam enters a cavity of a compressor, most of the compressors are two-blade or three-blade impellers, the impellers rotate at high speed, the steam, the impellers and the cavity rub against each other, potential safety hazards exist, and the electromagnetic induction low-temperature or high-boiling-point evaporation concentrator has no potential safety hazards due to no compressor; the electromagnetic induction low-temperature or high-boiling-point evaporation concentrator and the evaporation concentration process thereof are simple and reliable, ingenious in design, low in cost, high in efficiency, low in energy consumption and wide in application range.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of the structure of an electromagnetic induction low-temperature or high-boiling point evaporative concentrator of the present invention;
FIG. 2 is a schematic diagram of the structural principle of the electromagnetic induction low-temperature or high-boiling point evaporative concentrator of the present invention, wherein the feed tank is not shown;
FIG. 3 is a schematic diagram of the structure of the electromagnetic induction low-temperature or high-boiling point evaporation concentrator of the present invention, wherein the raw material tank and the condensate tank are not shown;
FIG. 4 is an exploded schematic view of a first heating means of the electromagnetic induction low or high boiling point evaporative concentrator of the present invention;
FIG. 5 is an exploded schematic view of a second heating means of the electromagnetic induction low or high boiling point evaporative concentrator of the present invention;
in the figure: 1. the device comprises an intermediate evaporation chamber, 11 parts of a pipeline, 2-1 parts of a liquid supplementing circulating pump, 3 parts of a first heating device, 4 parts of a second heating device, 4-1 parts of a magnetic conduction round pipe, 4-2 parts of an induction coil, 4-3 parts of a shell, 4-4 parts of a flange plate, 5-1 parts of a heat exchanger, 5-2 parts of an evaporation chamber, 5-3 parts of a heating chamber, 5-4 parts of a condensate tank, 5-4-1 parts of a preheating coil, 5-5 parts of a feed liquid circulating pump, 5-6 parts of a raw material tank, 5-7 parts of a raw material pump, 5-8 parts of a gas-liquid separator, 5-9 parts of a concentrate pump, 5-10 parts of a condensate pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1 to 5, an electromagnetic induction low-temperature or high-boiling-point evaporation concentrator includes an intermediate evaporation chamber 1, a liquid supplementing device, a first heating device 3 and a second heating device 4, wherein the liquid supplementing device is used for supplementing water to the intermediate evaporation chamber 1, specifically, the liquid supplementing device includes a liquid supplementing circulating pump 2-1, a feed inlet of the liquid supplementing circulating pump 2-1 is respectively connected with a water source and a liquid outlet of the intermediate evaporation chamber 1, a discharge outlet of the liquid supplementing circulating pump 2-1 is connected with a liquid inlet of the intermediate evaporation chamber 1, the first heating device 3 is arranged on the intermediate evaporation chamber 1, the second heating device 4 is arranged on a pipeline 11 of a secondary steam outlet of the intermediate evaporation chamber 1, and secondary steam generated by the intermediate evaporation chamber 1 is used as a heat source of evaporation equipment.
As shown in fig. 1-3, the evaporation equipment comprises a heat exchanger 5-1, an evaporation chamber 5-2, a heating chamber 5-3, a condensate tank 5-4, a feed liquid circulating pump 5-5, a raw material tank 5-6, a raw liquid pump 5-7, a vacuum pump, a concentrate pump 5-9 and a condensate pump 5-10, wherein a preheating coil 5-4-1 is arranged in the condensate tank 5-4, the raw liquid pump 5-7 is used for pumping the raw liquid in the raw material tank 5-6 to the preheating coil 5-4-1, a feed inlet of the feed liquid circulating pump 5-5 is respectively communicated with the preheating coil 5-4-1 and a circulating port of a steam chamber, a discharge outlet of the feed liquid circulating pump 5-5 is communicated with a tube pass through an upper end socket feed inlet of the heating chamber 5-3, a lower seal head liquid outlet, a vapor-liquid balance outlet and a condensed water outlet are sequentially arranged on the heating chamber 5-3 from bottom to top, the lower seal head liquid outlet and the vapor-liquid balance outlet of the heating chamber 5-3 are both communicated with the evaporation chamber 5-2, the condensed water outlet of the heating chamber 5-3 is communicated with a liquid inlet of the heat exchanger 5-1, a secondary steam outlet of the evaporation chamber 5-2 is communicated with a vapor inlet of the heat exchanger 5-1 through a vapor-liquid separator 5-8, a first liquid outlet of the heat exchanger 5-1 is communicated with the middle evaporation chamber 1, a second liquid outlet of the heat exchanger 5-1 is communicated with a condensed water tank 5-4, a secondary steam outlet of the middle evaporation chamber 1 is communicated with a shell pass of the heating chamber 5-3, the temperature of the condensed water after the secondary steam generated by the evaporation chamber 5-2 and the condensed water generated by the heating chamber 5-3 are subjected, condensed water respectively flows to the middle evaporation chamber 1 and the condensed liquid tanks 5-4, so that the heat is recycled, the energy consumption is reduced, the cost is reduced, and the working efficiency of the electromagnetic induction low-temperature or high-boiling-point evaporation concentrator is improved; the middle evaporation chamber 1, the heating chamber 5-3 and the condensate tank 5-4 are all connected with a vacuum pump (not shown in the figure), the upper end of the heating chamber 5-3 is provided with a vacuum pipe orifice connected with the vacuum pump, and the function of the vacuum pipe orifice is to extract non-condensable gas (the non-condensable gas has the characteristic of blocking steam flow) when the non-condensable gas is generated at the upper end of the heating chamber 5-3, so that the evaporation efficiency is improved; the concentrated liquid pump 5-9 is connected with a discharge hole of the evaporation chamber 5-2 and is used for discharging concentrated liquid in the evaporation chamber 5-2; the condensate pump 5-10 is connected with a condensate outlet of the condensate tank 5-4 and is used for discharging condensate in the condensate tank 5-4.
As shown in fig. 3 to 5, each of the first heating device 3 and the second heating device 4 of the present embodiment includes a magnetic conductive circular tube 4-1 and an induction coil 4-2, the induction coil 4-2 is wound on the magnetic conductive circular tube 4-1, and the induction coil 4-2 is connected to an alternating current induction power supply; the magnetic conduction round pipe 4-1 is wrapped with silicate cotton (not shown in the figure), the silicate cotton is located between the magnetic conduction round pipe 4-1 and the induction coil 4-2, the induction coil 4-2 is a high-temperature cable, the induction coil 4-2 is wound and fixed by a high-temperature adhesive tape or an aluminum foil adhesive tape (not shown in the figure), and the first heating device 3 and the second heating device 4 are both packaged by a stainless steel shell 4-3. In order to facilitate disassembly and maintenance and replacement, the magnetic conductive circular tube 4-1 and the shell 4-3 of the embodiment are both of a split structure, the magnetic conductive circular tube 4-1 is fixedly connected by a bolt, the magnetic conductive circular tube 4-1 of the first heating device 3 is sleeved on the lower part of the middle evaporation chamber 1, and the magnetic conductive circular tube 4-1 of the second heating device 4 is sleeved on the pipeline 11 of the secondary steam outlet of the middle evaporation chamber 1. The shell 4-3 of the first heating device 3 is fixedly arranged at the lower part of the middle evaporation chamber 1 through screws, and the shell 4-3 of the second heating device 4 is fixedly arranged on a pipeline 11 of a secondary steam outlet of the middle evaporation chamber 1 through a flange plate 4-4 and bolts. The alternating current flowing through the induction coil 4-2 generates an alternating magnetic field passing through the magnetic conduction round tube 4-1, the magnetic field enables the magnetic conduction round tube 4-1 to generate eddy current for heating, the aluminum foil adhesive tape also has the function of preventing magnetic leakage, most of materials of the existing evaporation concentrator adopt stainless steel, dual-phase steel and titanium materials with low carbon component content, the magnetic conductivity is poor, the heating efficiency is low as a result, the energy loss is large, the equipment investment cost is increased, the stainless steel 410 is selected for the material of the magnetic conduction round tube 4-1 of the application, the carbon component content of the stainless steel 410 is high, the magnetic conduction round tube 4-1 is sleeved at the position where the evaporation concentrator needs to be heated so as to solve the problem, the heating device has good heating effect, the heat preservation and insulation effect is good, the use is safe and reliable, and the service lives of the first heating device 3 and the second heating. The electromagnetic induction heating is adopted to replace the compressor heating, so that the cost is greatly reduced, the energy consumption is saved, the noise is reduced, the efficiency is higher, and the safety and the reliability are realized.
The low-temperature or high-boiling point evaporation concentration process using the electromagnetic induction low-temperature or high-boiling point evaporation concentrator comprises the following steps:
s 1: the first heating device 3 heats the water in the intermediate evaporation chamber 1 to generate steam;
s 2: the second heating device 4 is used for continuously heating and pressurizing the secondary steam at the secondary steam outlet of the intermediate evaporation chamber 1;
s 3: introducing the secondary steam generated in the step s2 into evaporation equipment as a heat source of the evaporation equipment;
s 4: when the water in the intermediate evaporation chamber 1 is consumed to a set value, the liquid replenishing device replenishes water to the intermediate evaporation chamber 1, and the steps s1 to s3 are repeated.
The step s3 includes the steps of:
s 31: the vacuum pump vacuumizes the shell pass of the heating chamber 5-3, so that the secondary steam generated in the step s2 is introduced into the shell pass of the heating chamber 5-3, meanwhile, the raw liquid pump 5-7 pumps the raw liquid in the raw material tank 5-6 into the preheating coil 5-4-1 of the condensate tank 5-4 for preheating (when the heat exchanger introduces preheated condensate water into the condensate tank 5-4 after the evaporation concentrator starts circulation), the liquid circulating pump 5-5 pumps the liquid in the preheating coil 5-4-1 to the upper end socket feeding port of the heating chamber 5-3, and then automatically flows to the tube pass of the heating chamber 5-3, and the secondary steam in the shell pass of the heating chamber 5-3 exchanges heat with the liquid in the tube pass;
s 32: the feed liquid heated by the secondary steam in the tube pass of the heating chamber 5-3 flows to the evaporation chamber 5-2 from the liquid outlet of the lower end socket of the heating chamber 5-3, meanwhile, the mixed feed liquid of a vapor phase and a liquid phase also flows to the evaporation chamber 5-2 from the vapor-liquid balance outlet of the heating chamber 5-3, and the feed liquid circulating pump 5-5 pumps the feed liquid with low upper concentration in the evaporation chamber 5-2 to the tube pass of the heating chamber 5-3 for circulation, so that the feed liquid maintains an evaporation state, the evaporation efficiency is improved, and the energy consumption is reduced; meanwhile, a vacuum pump is used for vacuumizing the middle evaporation chamber 1 and the condensate tank 5-4, condensate water formed by secondary steam in a shell pass of the heating chamber 5-3 and the secondary steam in the evaporation chamber 5-2 enter the heat exchanger 5-1 through the gas-liquid separator 5-8 for heat exchange, one part of the condensate water in the heat exchanger 5-1 flows to the middle evaporation chamber 1, and the other part of the condensate water flows to the condensate tank 5-4 for heating the preheating coil 5-4-1;
s 33: repeating the steps s31 to s 32;
s 34: the concentrated liquid pump 5-9 is used for discharging the concentrated liquid in the evaporation chamber 5-2, and the condensate liquid pump 5-10 is used for discharging the condensate liquid in the condensate liquid tank 5-4.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (10)
1. A low-temperature or high-boiling point evaporation concentration process is characterized in that: the method comprises the following steps:
s 1: the first heating device (3) heats the water in the middle evaporation chamber (1) to generate steam;
s 2: the second heating device (4) is used for continuously heating and pressurizing the secondary steam at the secondary steam outlet of the intermediate evaporation chamber (1);
s 3: introducing the secondary steam generated in the step s2 into evaporation equipment as a heat source of the evaporation equipment;
s 4: and when the water in the intermediate evaporation chamber (1) is consumed to a set value, the liquid replenishing device replenishes water to the intermediate evaporation chamber (1), and the steps s 1-s 3 are repeated.
2. The low or high boiling point evaporative concentration process of claim 1, wherein: the evaporation equipment comprises a heat exchanger (5-1), an evaporation chamber (5-2), a heating chamber (5-3), a condensate tank (5-4), a feed liquid circulating pump (5-5), a raw material tank (5-6), a raw material pump (5-7), a concentrate pump (5-9), a condensate pump (5-10) and a vacuum pump, and the step s3 comprises the following steps:
s 31: the vacuum pump is used for vacuumizing the shell pass of the heating chamber (5-3), so that secondary steam generated in the step s2 is introduced into the shell pass of the heating chamber (5-3), meanwhile, the raw material pump (5-7) is used for pumping raw material liquid in the raw material groove (5-6) into the preheating coil (5-4-1) of the condensate tank (5-4) for preheating, the material liquid circulating pump (5-5) is used for pumping material liquid in the preheating coil (5-4-1) to the tube pass of the heating chamber (5-3), and the secondary steam in the shell pass of the heating chamber (5-3) is subjected to heat exchange with the material liquid in the tube pass;
s 32: the feed liquid heated by the secondary steam in the tube pass of the heating chamber (5-3) flows to the evaporation chamber (5-2) from a lower end socket liquid outlet of the heating chamber (5-3), meanwhile, the mixed feed liquid of a vapor phase and a liquid phase also flows to the evaporation chamber (5-2) from a vapor-liquid balance outlet of the heating chamber (5-3), and the feed liquid circulating pump (5-5) pumps the feed liquid with low upper concentration in the evaporation chamber (5-2) to the tube pass of the heating chamber (5-3) for circulation, so that the feed liquid maintains an evaporation state; meanwhile, a vacuum pump is used for vacuumizing the middle evaporation chamber (1) and the condensate tank (5-4), condensate water formed by secondary steam in the shell pass of the heating chamber (5-3) and the secondary steam of the evaporation chamber (5-2) enter the heat exchanger (5-1) through the gas-liquid separator (5-8) for heat exchange, one part of the condensate water of the heat exchanger (5-1) flows to the middle evaporation chamber (1), and the other part of the condensate water flows to the condensate tank (5-4) for heating the preheating coil (5-4-1);
s 33: and repeating the step s31 to the step s 32.
3. The low temperature or high boiling point evaporative concentration process of claim 2, wherein: the evaporation apparatus further comprises a concentrate pump (5-9) and a condensate pump (5-10), and the step s3 further comprises the step s 34: the concentrated liquid pump (5-9) is used for discharging the concentrated liquid in the evaporation chamber (5-2), and the condensate liquid pump (5-10) is used for discharging the condensate in the condensate liquid tank (5-4).
4. An electromagnetic induction low-temperature or high-boiling point evaporative concentrator for use in the low-temperature or high-boiling point evaporative concentration process of claim 1, wherein: evaporating chamber (1), fluid infusion device, first heating device (3) and second heating device (4) in the middle of including, the fluid infusion device is used for moisturizing for evaporating chamber (1) in the middle of, first heating device (3) set up on evaporating chamber (1) in the middle of, second heating device (4) set up on pipeline (11) of the secondary steam export of evaporating chamber (1) in the middle of, the secondary steam that evaporating chamber (1) produced in the middle of is as evaporation equipment's heat source.
5. The electromagnetic induction low or high boiling point evaporative concentrator of claim 4, wherein: the first heating device (3) and the second heating device (4) both comprise a magnetic conduction round tube (4-1) and an induction coil (4-2), the induction coil (4-2) is wound on the magnetic conduction round tube (4-1), and the induction coil (4-2) is connected with an alternating current induction power supply; the magnetic conduction round pipe (4-1) of the first heating device (3) is sleeved on the lower portion of the middle evaporation chamber (1), and the magnetic conduction round pipe (4-1) of the second heating device (4) is sleeved on the pipeline (11) of the secondary steam outlet of the middle evaporation chamber (1).
6. The electromagnetic induction low or high boiling point evaporative concentrator of claim 5, wherein: the magnetic conduction round pipe (4-1) is wrapped with silicate cotton, the silicate cotton is located between the magnetic conduction round pipe (4-1) and the induction coil (4-2), the induction coil (4-2) is a high-temperature cable, the induction coil (4-2) is wound and fixed by a high-temperature adhesive tape or an aluminum foil adhesive tape, and the first heating device (3) and the second heating device (4) are packaged by a stainless steel shell (4-3).
7. The electromagnetic induction low or high boiling point evaporative concentrator of claim 6, wherein: the magnetic conductive circular tube (4-1) and the shell (4-3) are both of split structures.
8. The electromagnetic induction low or high boiling point evaporative concentrator of claim 1, wherein: the liquid supplementing device comprises a liquid supplementing circulating pump (2-1), a feed inlet of the liquid supplementing circulating pump (2-1) is respectively connected with a water source and a liquid outlet of the middle evaporation chamber (1), and a discharge outlet of the liquid supplementing circulating pump (2-1) is connected with a liquid inlet of the middle evaporation chamber (1).
9. The electromagnetic induction low-temperature or high-boiling-point evaporation concentrator according to any one of claims 4 to 8, wherein: the evaporation equipment comprises a heat exchanger (5-1), an evaporation chamber (5-2), a heating chamber (5-3), a condensate tank (5-4), a feed liquid circulating pump (5-5), a raw material tank (5-6), a stock solution pump (5-7) and a vacuum pump, wherein a preheating coil (5-4-1) is arranged in the condensate tank (5-4), the stock solution pump (5-7) is used for pumping the stock solution in the raw material tank (5-6) to the preheating coil (5-4-1), a feed inlet of the feed liquid circulating pump (5-5) is respectively communicated with the preheating coil (5-4-1) and a circulating port of a steam chamber, a discharge outlet of the feed liquid circulating pump (5-5) is communicated with a tube pass of the heating chamber (5-3), and a lower end socket liquid outlet, a lower end socket liquid, The steam-liquid balance outlet and the condensed water outlet are communicated, a lower end socket liquid outlet and the steam-liquid balance outlet of the heating chamber (5-3) are both communicated with the evaporation chamber (5-2), the condensed water outlet of the heating chamber (5-3) is communicated with a liquid inlet of the heat exchanger (5-1), a secondary steam outlet of the evaporation chamber (5-2) is communicated with a steam inlet of the heat exchanger (5-1) through a steam-liquid separator (5-8), a first liquid outlet of the heat exchanger (5-1) is communicated with the middle evaporation chamber (1), a second liquid outlet of the heat exchanger (5-1) is communicated with a condensed liquid tank (5-4), and a secondary steam outlet of the middle evaporation chamber (1) is communicated with a shell pass of the heating chamber (5-3); the middle evaporation chamber (1), the heating chamber (5-3) and the condensate tank (5-4) are all connected with a vacuum pump.
10. The electromagnetic induction low or high boiling point evaporative concentrator of claim 9, wherein: the evaporation equipment further comprises a concentrated liquid pump (5-9) and a condensed liquid pump (5-10), and the concentrated liquid pump (5-9) is connected with a discharge hole of the evaporation chamber (5-2); and the condensate pump (5-10) is connected with a condensate outlet of the condensate tank (5-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010832441.3A CN111821705B (en) | 2020-08-18 | 2020-08-18 | Electromagnetic induction low-temperature or high-boiling-point evaporation concentrator and evaporation concentration process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010832441.3A CN111821705B (en) | 2020-08-18 | 2020-08-18 | Electromagnetic induction low-temperature or high-boiling-point evaporation concentrator and evaporation concentration process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111821705A true CN111821705A (en) | 2020-10-27 |
| CN111821705B CN111821705B (en) | 2022-03-08 |
Family
ID=72918141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010832441.3A Active CN111821705B (en) | 2020-08-18 | 2020-08-18 | Electromagnetic induction low-temperature or high-boiling-point evaporation concentrator and evaporation concentration process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111821705B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202852795U (en) * | 2012-09-29 | 2013-04-03 | 段伟 | Superheated steam generator |
| CN104548650A (en) * | 2015-01-18 | 2015-04-29 | 丁武轩 | Continuous evaporative crystallization method |
| CN205699506U (en) * | 2016-05-17 | 2016-11-23 | 常州泰特环境设备工程有限公司 | A kind of electronics acid pickle electron-level phosphoric acid recycling and processing device |
| CN206018559U (en) * | 2016-08-31 | 2017-03-15 | 广东海明晖电子科技有限公司 | Electromagnetic valve |
-
2020
- 2020-08-18 CN CN202010832441.3A patent/CN111821705B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202852795U (en) * | 2012-09-29 | 2013-04-03 | 段伟 | Superheated steam generator |
| CN104548650A (en) * | 2015-01-18 | 2015-04-29 | 丁武轩 | Continuous evaporative crystallization method |
| CN205699506U (en) * | 2016-05-17 | 2016-11-23 | 常州泰特环境设备工程有限公司 | A kind of electronics acid pickle electron-level phosphoric acid recycling and processing device |
| CN206018559U (en) * | 2016-08-31 | 2017-03-15 | 广东海明晖电子科技有限公司 | Electromagnetic valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111821705B (en) | 2022-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109364506B (en) | Skid-mounted MVR evaporation device | |
| CN201384862Y (en) | Indirect vapor recompression evaporation system | |
| CN105709601A (en) | Heat pump-double-effect membrane distillation apparatus and distillation method | |
| CN216584265U (en) | Low-level waste liquid heat pump evaporation treatment system that puts | |
| CN111821705B (en) | Electromagnetic induction low-temperature or high-boiling-point evaporation concentrator and evaporation concentration process thereof | |
| CN110550682B (en) | Small-size waste water concentration system | |
| CN111540496B (en) | System and method for treating radioactive wastewater through non-contact efficient membrane distillation | |
| CN111821706A (en) | Electromagnetic induction evaporation concentrator | |
| CN106809896B (en) | A kind of organic wastewater treating system and method | |
| CN110282678A (en) | Wind light mutual complementing double flash evaporation seawater desalination system and working method based on vortex tube | |
| CN207532811U (en) | A kind of liquid heating evaporation enrichment facility | |
| CN206449629U (en) | A kind of heat recovery system of utilization demineralized water and condensate | |
| CN104027990A (en) | Mechanical steam recompression evaporator | |
| CN212548323U (en) | Electromagnetic induction evaporation concentrator | |
| CN207085361U (en) | A kind of acid solution vaporising device | |
| CN209428171U (en) | A kind of equipment being concentrated by evaporation electroplating wastewater using solar water heater | |
| CN106730942A (en) | A kind of salt organic waste water low-temperature evaporation crystallization apparatus high | |
| CN209221520U (en) | A kind of evaporation equipment for Calcium Chloride Production | |
| CN208394814U (en) | A kind of MVR processing equipment for the wastewater treatment containing high-sulfur | |
| CN206424596U (en) | A kind of high salt organic waste water low-temperature evaporation crystallization apparatus | |
| CN104179537B (en) | Brown coal drying power generating system capable of recycling water in coal and implementation method of brown coal drying power generating system | |
| CN209630654U (en) | Rectifying column gas phase waste heat recovery device | |
| CN107860149A (en) | A kind of second-kind absorption-type heat pump of solar energy auxiliary heating | |
| CN220090509U (en) | Parallelly connected sled dress formula MVR evaporimeter structure | |
| CN217676885U (en) | Double-shell-tube low-pressure heat pump distillation equipment |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |