CN114433250A - Slurry recovery device, slurry preparation system and slurry recovery method - Google Patents
Slurry recovery device, slurry preparation system and slurry recovery method Download PDFInfo
- Publication number
- CN114433250A CN114433250A CN202011109907.3A CN202011109907A CN114433250A CN 114433250 A CN114433250 A CN 114433250A CN 202011109907 A CN202011109907 A CN 202011109907A CN 114433250 A CN114433250 A CN 114433250A
- Authority
- CN
- China
- Prior art keywords
- slurry
- outlet
- steam
- inlet
- evaporation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention relates to the technical field of catalyst preparation, and discloses a slurry recovery device, a slurry preparation system and a slurry recovery method. This thick liquids recovery unit can heat the thick liquids that the concentration received to can carry out recycle to the thick liquids that produce when washing the slurrying cauldron. Through set up above-mentioned thick liquids recovery unit in thick liquids preparation system to can carry out recycle to the thick liquids that produce when washing the slurrying cauldron, reduce the waste of material, and avoid the pollution to ecological environment. The slurry recovery method comprises the following steps: step S10: collecting the slurry; step S20: heating the slurry collected in the step S10 to obtain steam and a steamed material.
Description
Technical Field
The invention relates to the technical field of catalyst preparation, in particular to a slurry recovery device, a slurry preparation system and a slurry recovery method.
Background
Taking the preparation of the catalyst as an example, the catalyst is the core of the chemical industry, and the high-quality preparation of the catalyst has very important significance. Generally, the preparation process of the catalyst can be divided into three steps of raw material pretreatment, active component loading and catalyst activation. Wherein, the raw material pretreatment and the active component loading are basically carried out in a pulping kettle, namely, the catalyst raw material and a solvent such as water are fully mixed under certain conditions to form active component slurry, and then the catalyst active component is loaded on a carrier, thereby completing the loading of the active component.
In actual production, because the types of the catalyst raw materials are more, in order to obtain a better loading effect, the active component slurry is required to have higher viscosity. As the viscosity of the active component slurry is high, after the active component load is finished, more slurry is usually adhered to the inner wall of the pulping kettle, a high-pressure water gun is needed for washing, and the slurry generated after washing is generally treated as wastewater.
However, since these slurries contain a catalyst raw material, they are wasted if discharged as waste water and pollute the environment.
Disclosure of Invention
The invention aims to provide a slurry recovery device which can heat and concentrate received slurry so as to recycle the slurry generated when a pulping kettle is washed.
In order to achieve the above object, an aspect of the present invention provides a slurry recovery apparatus including:
a receiving unit configured to be capable of receiving the slurry and discharging the slurry; and
an evaporation unit disposed downstream of the receiving unit and configured to receive the slurry discharged by the receiving unit and heat the slurry to obtain steam and a steamed material.
Above-mentioned technical scheme is through setting up the evaporation unit that can heat the thick liquids in thick liquids recovery unit to can concentrate the thick liquids that the concentration is lower in order to obtain the higher evaporation material of concentration, like this, can put into the slurrying cauldron of preparation relevant product thick liquids as the raw materials with the higher evaporation material of concentration again, from this to the waste material recycle, reduced the waste of material.
Preferably, the evaporation unit includes an evaporation tank, an evaporation chamber capable of containing the slurry is provided in the evaporation tank, and the evaporation unit further includes a heating portion capable of heating the slurry in the evaporation chamber, wherein:
the evaporation tank is provided with an evaporation inlet for the slurry to enter the evaporation chamber, a steam outlet for heating steam generated after the slurry to be discharged, and a discharge outlet for heating the steam generated after the slurry to be discharged.
Preferably, the evaporation tank is provided with a circulation inlet and a circulation outlet for the slurry to enter and exit respectively;
the heating part comprises a first heat exchanger, and the first heat exchanger is provided with a first heating inlet and a first heating outlet which are used for a first medium to be heated to enter and exit respectively, and a first cooling inlet and a first cooling outlet which are used for a first heat exchange medium capable of exchanging heat with the first medium to be heated to enter and exit respectively; wherein:
the first heating inlet is communicated with the circulating outlet, the first heating outlet is communicated with the circulating inlet, and the first cooling inlet is communicated with the steam outlet.
Preferably, the heating part comprises a second heat exchanger, and the second heat exchanger is provided with a second heating inlet and a second heating outlet for the second medium to be heated to enter and exit, and a second cooling inlet and a second cooling outlet for the second heat exchange medium capable of exchanging heat with the second medium to be heated to enter and exit respectively; wherein:
the second heating inlet receives the slurry discharged by the receiving unit, the second heating outlet communicates with the evaporation inlet, and the second cooling inlet communicates with the first cooling outlet.
Preferably, the slurry recovery apparatus comprises:
a collecting tank, wherein a collecting cavity capable of containing condensate is arranged in the collecting tank, and a collecting tank inlet capable of being communicated with the second cooling outlet and a collecting tank outlet for discharging collected condensate are arranged on the collecting tank; and
a first filter capable of receiving the condensate discharged from the collection tank outlet and filtering out solid particles having a predetermined particle size in the condensate.
Preferably, the evaporation unit includes a gas-liquid separator that receives the steam discharged from the steam outlet and performs gas-liquid separation on the steam, the gas-liquid separator having a separator inlet into which the steam enters, a steam discharge outlet through which the steam obtained after gas-liquid separation is discharged, and a liquid discharge outlet through which the liquid obtained after gas-liquid separation is discharged; wherein:
the separator inlet is communicated with the steam outlet, and the first cooling inlet is communicated with the steam outlet through the steam outlet.
Preferably, the evaporation unit includes a first communication pipe communicating the first cooling inlet and the vapor discharge port, and a compressor provided in the first communication pipe, the compressor being capable of compressing the vapor within the first communication pipe; and/or
The evaporation unit comprises a second communicating pipe communicated with the first heating inlet and the circulating outlet and a first delivery pump arranged on the second communicating pipe, and the first delivery pump can pump the slurry in the second communicating pipe.
Preferably, the slurry recovery device comprises a cyclone separator, and the cyclone separator can receive the steamed material discharged from the discharge hole and perform solid-liquid separation on the steamed material.
Preferably, the cyclone separator is provided with a slurry outlet for discharging secondary slurry obtained after solid-liquid separation;
the slurry recovery device comprises a slurry treatment unit, the slurry treatment unit comprises a disperser, and the disperser can receive the secondary slurry discharged from the slurry discharge port and disperse the secondary slurry; or
The slurry treatment unit comprises a disperser and a second filter arranged downstream of the disperser, wherein: the disperser can receive by arrange thick liquid mouth discharged secondary thick liquids and right the secondary thick liquids carry out dispersion treatment, the second filter can the filtering by solid particle that has the particle size of predetermineeing in the secondary thick liquids that the disperser discharged.
A second aspect of the invention provides a slurry preparation system comprising a slurrying kettle and the slurry recovery apparatus provided herein, the slurry recovery apparatus being disposed downstream of the slurrying kettle and being capable of receiving slurry discharged from the slurrying kettle. By arranging the slurry recovery device in the slurry preparation system, the slurry generated when the pulping kettle is washed can be recycled, the utilization rate of materials is improved, the waste of the materials is greatly reduced, and the pollution of directly discharged materials to the ecological environment is avoided.
A third aspect of the present invention provides a slurry recovery method comprising the steps of:
step S10: collecting the slurry;
step S20: heating the slurry collected in the step S10 to obtain steam and a steamed material.
Preferably, in the step S20, the heating temperature is 80 ℃ to 95 ℃; or
The slurry collected in the step S10 is heated stepwise.
Preferably, the slurry recovery method comprises the steps of: step S40: cooling the vapor to obtain a condensate; preferably, in the step S40, the steam is gradually cooled to obtain a condensate.
Preferably, the volume of condensate obtained by cooling the vapour is V2The volume of the slurry collected in the step S10 is V1Wherein: v2/V1And discharging the steamed material obtained in the step S20 when the content of the steamed material is more than or equal to 0.95.
Drawings
Fig. 1 is a schematic view of the overall configuration of a slurry preparation system according to a preferred embodiment of the present invention, in which a slurry recovery apparatus according to a preferred embodiment of the present invention is provided.
Description of the reference numerals
12-a receiving unit; 120-a receiving tank; 14-an evaporation unit; 140-an evaporator tank; 144-an evaporation chamber; 150-a gas-liquid separator; 152-a first heat exchanger; 153 a-first communication pipe; 153 b-a second communication tube; 154-a compressor; 155 a-a first delivery pump; 155 b-a second delivery pump; 155 c-a third delivery pump; 155 d-a fourth delivery pump; 155 e-a fifth transfer pump; 155 f-a sixth delivery pump; 155 g-a seventh delivery pump; 155 h-an eighth delivery pump; 16-a second heat exchanger; 18 a-a collection tank; 18 b-a first filter; 19 a-a cyclone separator; 19 b-a secondary slurry collection tank; 19 c-a disperser; 19 d-a second filter; 20-a slurry preparation system; 22-pulping kettle; 24-nozzle.
Detailed Description
In the present invention, the use of directional terms such as "upper, lower, left and right" in the absence of a contrary explanation generally means that the directions shown in the drawings and the practical application are considered to be the same, and "inner and outer" mean the inner and outer of the outline of the component.
The invention provides a slurry recovery device, as shown in fig. 1, the slurry recovery device comprises a receiving unit 12, the receiving unit 12 is configured to be capable of receiving slurry and discharging the slurry, wherein the receiving unit 12 may comprise a receiving tank 120, a receiving chamber capable of accommodating the slurry is arranged in the receiving tank 120, a receiving tank inlet and a receiving tank outlet are arranged on the receiving tank 120, the receiving tank inlet and the receiving tank outlet are respectively used for the slurry to enter and exit the receiving chamber, and the slurry can be discharged through the receiving tank outlet when the slurry needs to be discharged; the slurry recovery apparatus further includes an evaporation unit 14, the evaporation unit 14 is disposed downstream of the receiving unit 12, and the evaporation unit 14 is disposed to be able to receive the slurry discharged from the receiving unit 12 and heat the slurry to obtain steam and a steam, the receiving tank 120 discharges the slurry into the evaporation unit 14, and the evaporation unit 14 heats the slurry to obtain steam such as water steam and steam, it should be noted that the steam contains the same solid components as those contained in the slurry, but the steam has a concentration greater than that of the slurry. Through set up the evaporation unit 14 that can heat thick liquids in thick liquids recovery unit to can concentrate the thick liquids that the concentration is lower in order to obtain the higher material that evaporates of concentration, like this, can put into the slurrying cauldron 22 of preparation relevant product thick liquids with the higher material that evaporates of concentration as the raw materials again, from this to the waste material recycle, reduced the waste of material. Note that the slurry is a slurry generated by washing the pulping kettle 22, and thus the concentration of the slurry is lower than the concentration of the raw material, but the solid content of the slurry is the same as the solid content of the raw material, and the concentration of the evaporated slurry obtained by evaporating the slurry is similar to the concentration of the raw material.
The slurry recycling apparatus is particularly suitable for recycling the catalyst slurry, for example, after the catalyst slurry is prepared in the pulping kettle 22, the catalyst slurry can be discharged out of the pulping kettle 22, and then the catalyst slurry remained on the inner wall of the pulping kettle 22 can be washed by the nozzle 24 arranged in the pulping kettle 22 to form slurry, the concentration of the slurry is low, the slurry can be discharged into the receiving tank 120 for collection, and then the collected slurry can be discharged into the evaporation unit 14 for heating and concentration.
As shown in fig. 1, the evaporation unit 14 may include an evaporation tank 140, an evaporation chamber 144 capable of accommodating the slurry may be disposed in the evaporation tank 140, and the evaporation unit 14 may further include a heating portion capable of heating the slurry in the evaporation chamber 144, wherein the structural form of the heating portion is not particularly limited as long as the slurry in the evaporation chamber 144 can be heated. In addition, an evaporation inlet through which the slurry enters the evaporation chamber 144, a steam outlet through which steam generated after heating the slurry is discharged, and a discharge outlet through which steam generated after heating the slurry is discharged may be provided on the evaporation tank 140. Wherein, the evaporation inlet can be disposed on the sidewall of the evaporation canister 140, and the steam outlet can be disposed on the top wall of the evaporation canister 140.
A circulation inlet and a circulation outlet for the slurry to enter and exit respectively can be arranged on the evaporation tank 140, and both the circulation inlet and the circulation outlet can be arranged on the side wall of the evaporation tank 140, wherein the circulation inlet can be positioned above the circulation outlet, and it can be understood that the slurry entering the evaporation chamber 144 from the evaporation inlet can be discharged through the circulation outlet, and after being heated, the slurry enters the evaporation chamber 144 through the circulation inlet; the heating part may include a first heat exchanger 152, the first heat exchanger 152 having a first heating inlet and a first heating outlet through which the first medium to be heated enters and exits, respectively, and a first cooling inlet and a first cooling outlet through which the first heat exchange medium capable of exchanging heat with the first medium to be heated enters and exits, respectively; wherein: the first heating inlet is communicated with the circulating outlet, the first heating outlet is communicated with the circulating inlet, and the first cooling inlet is communicated with the steam outlet. Therefore, the steam obtained by heating in the evaporation unit 14 can be used as the first heat exchange medium to heat the first medium to be heated, i.e. the slurry, and it can be understood that the steam obtained by heating in the evaporation unit 14 can be used as the first heat exchange medium, and the steam obtained by heating in the evaporation unit 14 can be used as the first medium to be heated. Thereby, the energy of each substance is fully utilized without excessive extra heat as a heat source. A temperature sensor may be disposed in the evaporation tank 140, and when the temperature sensor detects that the temperature in the evaporation tank 140 is higher than 90 ℃, the slurry may be stopped in the evaporation tank 140 and no longer heated by the first heat exchanger 152.
In addition, the heating part may include a second heat exchanger 16, the second heat exchanger 16 having a second heating inlet and a second heating outlet through which a second medium to be heated enters and exits, and a second cooling inlet and a second cooling outlet through which a second heat exchange medium capable of exchanging heat with the second medium to be heated enters and exits, respectively; wherein: the second heating inlet receives the slurry discharged from the receiving unit 12, the second heating outlet is communicated with the evaporation inlet, the second cooling inlet is communicated with the first cooling outlet, and the steam discharged from the first heat exchanger 152 can be used as a second heat exchange medium to preheat the slurry discharged from the receiving unit 12, that is, the slurry discharged from the receiving unit 12 is used as a second medium to be heated. Therefore, after the steam generated by the evaporation unit 14 for evaporating the slurry is cooled once in the first heat exchanger 152, the steam is introduced into the second heat exchanger 16 for preheating the slurry before entering the evaporation unit 14, so that the slurry can be rapidly heated to a preset temperature of above 90 ℃ in the evaporation unit 14, the heat energy of the steam can be fully utilized, and the energy waste is reduced.
The slurry recovery device may include a collection tank 18a, a collection chamber capable of containing condensate is provided in the collection tank 18a, and a collection tank inlet capable of being communicated with the second cooling outlet and a collection tank outlet for discharging collected condensate are provided on the collection tank 18a, it being understood that the steam is cooled for the second time by the second heat exchanger 16 to form condensate, and the condensate is discharged from the second cooling outlet and collected by the collection tank 18 a. The steam is cooled to 50 ℃ or lower for the second time to become a condensate, and the condensate is collected by the collection tank 18 a.
In addition, a first filter 18b may be provided downstream of the collection tank 18 a. The first filter 18b is able to receive the condensate discharged by the outlet of the collecting tank and to filter out solid particles of a predetermined size in the condensate, it being understood that the first filter 18b is able to filter out solid particles of a predetermined size in the condensate, whereby a purified condensate is obtained. The fifth delivery pump 155e may be provided, and the fifth delivery pump 155e may pump the condensate discharged from the first filter 18b to the slurrying kettle 22, may serve as a solvent required for slurrying, and may also pump the condensate to the nozzle 24 provided in the slurrying kettle 22, so as to wash the inner wall of the slurrying kettle 22 to wash away the residue, thereby eliminating the need for additional solvent such as water to wash away, and reducing waste of resources. Furthermore, a sixth delivery pump 155f may be provided, the sixth delivery pump 155f being capable of pumping the condensate collected in the collection tank 18a into the first filter 18b to improve the efficiency of the delivery of the condensate.
To facilitate the transfer of the slurry in the receiving unit 12, such as the receiving tank 120, to the second heat exchanger 16, a second transfer pump 155b may be provided, the second transfer pump 155b being capable of pumping the slurry in the receiving tank 120 to the second heat exchanger 16.
In addition, a gas-liquid separator 150 may be provided, and the gas-liquid separator 150 receives the steam discharged from the steam outlet and performs gas-liquid separation on the steam to remove the liquid carried in the steam, it is understood that the gas-liquid separator 150 has a separator inlet for steam to enter, a steam outlet for steam to be discharged from the gas-liquid separator, and a liquid outlet for liquid to be discharged from the gas-liquid separator, the steam outlet may be provided at the top of the gas-liquid separator 150, and the liquid outlet may be provided at the bottom of the gas-liquid separator 150, and it should be noted that a liquid return port communicated with the liquid outlet may be provided on the evaporation tank 140, that is, the liquid obtained from the gas-liquid separation may be returned to the evaporation tank 140 through the liquid return port, wherein: the separator inlet is in communication with the vapor outlet, and the first cooling inlet is in communication with the vapor outlet via the vapor exhaust. That is, the steam discharged from the evaporation tank 140 is first subjected to gas-liquid separation by the gas-liquid separator 150, and then enters the first heat exchanger 152 for heat exchange and temperature reduction.
A first communication pipe 153a communicating the first cooling inlet and the steam outlet and a compressor 154 arranged on the first communication pipe 153a may be provided, the compressor 154 may compress the steam in the first communication pipe 153a, so that the compressor 154 may compress the steam before entering the first heat exchanger 152 to increase the temperature, for example, the temperature of the steam may be increased to above 95 ℃, thereby better exchanging heat between the steam and the slurry.
The evaporation unit 14 may include a second communication pipe 153b communicating the first heating inlet and the circulation outlet, and a first transfer pump 155a disposed in the second communication pipe 153b, and the first transfer pump 155a may pump the slurry in the second communication pipe 153b, so that the slurry may be timely pumped into the first heat exchanger 152 for heating, thereby improving the operation efficiency.
A cyclone separator 19a may be provided, the cyclone separator 19a may receive the slurry discharged from the discharge port and perform solid-liquid separation on the slurry, the cyclone separator 19a may have a slurry discharge port through which the secondary slurry obtained after the solid-liquid separation is discharged, and by providing the cyclone separator 19a, the slurry obtained by evaporation may be concentrated again to increase the solid content of the secondary slurry. The cyclone separator 19a has a secondary liquid discharge port through which the liquid obtained by the solid-liquid separation is discharged, and the secondary liquid discharge port may communicate with the liquid return port so that the liquid is returned into the evaporation tank 140 again.
In addition, a third transfer pump 155c may be provided, the third transfer pump 155c being capable of pumping the slurry discharged from the discharge port to the cyclone 19 a.
A slurry treatment unit may be provided, and the slurry treatment unit may include a disperser 19c, where the disperser 19c may be capable of receiving the secondary slurry discharged from the slurry discharge port and performing dispersion treatment on the secondary slurry, thereby uniformly dispersing solid particles in the secondary slurry, so that the secondary slurry can be fed into the pulping kettle 22 as a raw material, so that the secondary slurry performs a better reaction in the pulping kettle 22, for example, when the secondary slurry is a catalyst slurry, the active component loading may be better completed. Among them, an ultrasonic disperser may be used as the disperser 19 c.
In order to improve the working efficiency, a secondary slurry collecting tank 19b can be arranged, a secondary slurry collecting chamber capable of containing secondary slurry is arranged in the secondary slurry collecting tank 19b, a secondary slurry inlet and a secondary slurry outlet which are respectively used for the secondary slurry to enter and exit can be arranged on the secondary slurry collecting tank 19b, wherein the disperser 19c can be communicated with the cyclone separator 19a through the secondary slurry collecting tank 19b, so that the secondary slurry discharged from the slurry discharging port of the cyclone separator 19a can be collected in the secondary slurry collecting tank 19b firstly, and can be discharged into the disperser 19c for dispersion treatment when the secondary slurry is collected to a preset amount, thereby improving the working efficiency. In addition, a fourth transfer pump 155d may be provided, and the fourth transfer pump 155d may be capable of pumping the secondary slurry discharged from the secondary slurry collection tank 19b to the disperser 19 c.
In addition, a second filter 19d may be disposed downstream of the disperser 19c, the second filter 19d being capable of filtering out solid particles having a predetermined particle size in the secondary slurry discharged from the disperser 19c, and by disposing the second filter 19d, the solid particles having a predetermined particle size in the secondary slurry may be filtered out, that is, the solid particles having a predetermined particle size are filtered out from the secondary slurry, whereby the secondary slurry may be charged into the slurrying kettle 22 as a usable raw material to perform a reaction.
A seventh transfer pump 155g may be provided, and the seventh transfer pump 155g may pump the secondary slurry in the disperser 19c to the second filter 19d, and an eighth transfer pump 155h may be provided, and the eighth transfer pump 155h may pump the secondary slurry filtered by the second filter 19d to the slurrying kettle 22.
Note that a first level meter may be provided in the receiving tank 120, and the volume V of the slurry in the receiving tank 120 can be obtained by the first level meter1Furthermore, a second level gauge may be provided in the collecting tank 18a, by means of which the volume V of condensate in the collecting tank 18a can be determined2. The inventor researches and discovers that when V is2/V1After 0.95 g, indicating that the desired concentration of distillate in the evaporator 140 has been reached, the third transfer pump 155c can be activated to pump the distillate to the cyclone 19 a. Further, a third level meter may be provided in the secondary slurry collection tank 19b, by which the volume V of the secondary slurry in the secondary slurry collection tank 19b can be acquired3。
In addition, when there is no material in both the receiving tank 120 and the evaporation tank 140, the first transfer pump 155a, the second transfer pump 155b, and the compressor 154 may be stopped.
The invention also provides a slurry preparation system, wherein the slurry preparation system 20 comprises a pulping kettle 22 and the slurry recovery device provided by the invention, and the slurry recovery device is arranged at the downstream of the pulping kettle 22 and can receive the slurry discharged by the pulping kettle 22. By arranging the slurry recovery device provided by the invention in the slurry preparation system 20, the slurry generated by washing the pulping kettle 22 can be recycled, the utilization rate of materials is improved, and the waste of the materials is greatly reduced. Wherein, the slurry outlet of the slurrying kettle 22 can be communicated with the receiving tank inlet of the receiving tank 120.
The invention also provides a slurry recovery method, which can be used for preferably recovering slurry by using the slurry recovery device provided by the invention, and comprises the following steps: step S10: collecting the slurry, wherein the slurry can be received by the receiving tank 120 in the receiving unit 12, and when the slurry is collected to a preset amount, the next step of processing can be performed; step S20: the slurry collected in the step S10 is heated to obtain steam and a distilled material, the slurry can be concentrated by the step S20 to reach a desired concentration, and then the concentrated slurry can be used as a raw material to be fed into the pulping kettle 22, for example, the slurry generated by washing the pulping kettle 22 has a low concentration, the distilled material with a high concentration is obtained after heating, and the distilled material can be used as a raw material to be fed into the pulping kettle 22 again for reaction to prepare a product slurry. It will be appreciated that the slurry may be concentrated by heating using the evaporation tank 140 of the evaporation unit 14.
In the step S20, the heating temperature is 80 ℃ to 95 ℃, and the slurry is heated within the above temperature range, so that the heating efficiency is ensured, the slurry is timely concentrated to a preset concentration, and the quality of the slurry is ensured.
In addition, in the step S20, the slurry collected in the step S10 may be heated in a stepwise manner. Preferably, the slurry collected in the step S10 may be heated in two steps, the collected slurry may be preheated to 50 ℃ to 70 ℃ first, and then the preheated slurry is heated to 90 ℃ or more, and the slurry collected in the step S10 is heated in a gradual heating manner, so that not only the heating efficiency is ensured, but also the energy of the material is fully utilized, and thus, excessive additional heat is not required to heat the collected slurry.
The slurry recovery process may include the steps of: step S40: the steam is cooled to obtain condensate, and the condensate obtained by cooling the steam can be recycled, for example, the condensate can be used as a solvent required in pulping, and can also be pumped to a nozzle 24 arranged in the pulping kettle 22 to wash the inner wall of the pulping kettle 22 to wash away residues, so that extra solvent such as water is not needed for washing, and material waste is reduced. The cooling method is not particularly limited, and for example, the steam may be naturally cooled to 50 ℃ or lower, or the steam may be cooled to 50 ℃ or lower by using a cooling medium.
Preferably, the steam may be cooled in a stepwise manner to obtain a condensate, for example, the steam may be cooled in two steps, first to a temperature of 50 ℃ to 70 ℃, and then cooled to a temperature below 50 ℃ to finally obtain a condensate, wherein the condensate comprises cooling water. The steam is cooled in a gradual cooling mode, so that the cooling efficiency is ensured, and the steam is cooled to a moderate temperature to obtain the condensate.
In order to make the condensate fully usable, the condensate may be filtered to filter out solid particles in the condensate.
The volume of the condensate obtained and the volume of the slurry collected in step S10 can be monitored in real time, and the manner of obtaining the volume, such as obtaining the corresponding volume by a liquid level meter, is described in the foregoing, and will not be described herein again. Wherein the volume of condensate obtained by cooling the steam is V2The volume of the slurry collected in the step S10 is V1When V is2/V1At least 0.95, the distillate obtained in the step S20 is discharged, i.e., the distillate in the evaporation tank 140 is discharged.
In addition, the obtained steam may be subjected to secondary concentration to obtain a secondary slurry, for example, the steam may be subjected to solid-liquid separation by using the cyclone separator 19a, so that the steam is concentrated to a predetermined concentration, and then, the steam may be fed into the pulping kettle 22 again as a raw material to perform a reaction.
In order to improve the reaction efficiency, the secondary slurry may be subjected to a dispersion treatment, thereby uniformly dispersing solid particles in the secondary slurry, wherein the secondary slurry may be subjected to the dispersion treatment with an ultrasonic disperser. Preferably, the secondary slurry may be dispersed for 5 to 15 minutes, whereby the solid particles in the secondary slurry may be uniformly dispersed.
In addition, the dispersed secondary slurry may be filtered to filter solid particles having a predetermined particle size in the secondary slurry, so that relatively large impurities in the secondary slurry may be removed, and thus, the filtered secondary slurry may be added as a raw material to the slurrying kettle 22 for reaction.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable way. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (14)
1. A slurry recovery apparatus, comprising:
a receiving unit (12), the receiving unit (12) being arranged to be able to receive the slurry and discharge the slurry; and
an evaporation unit (14), the evaporation unit (14) being arranged downstream of the receiving unit (12), and the evaporation unit (14) being arranged to be able to receive the slurry discharged by the receiving unit (12) and to heat the slurry to obtain steam and a steamed material.
2. The slurry recovery apparatus according to claim 1, wherein the evaporation unit (14) comprises an evaporation tank (140), an evaporation chamber (144) capable of containing the slurry is provided in the evaporation tank (140), the evaporation unit (14) further comprises a heating portion capable of heating the slurry in the evaporation chamber (144), wherein:
the evaporation tank (140) is provided with an evaporation inlet for the slurry to enter the evaporation chamber (144), a steam outlet for discharging steam generated after the slurry is heated, and a discharge outlet for discharging the steam generated after the slurry is heated.
3. Slurry recovery apparatus according to claim 2, wherein said evaporation tank (140) is provided with a circulation inlet and a circulation outlet for the slurry to enter and exit, respectively;
the heating part comprises a first heat exchanger (152), and the first heat exchanger (152) is provided with a first heating inlet and a first heating outlet which are respectively used for the first medium to be heated to enter and exit, and a first cooling inlet and a first cooling outlet which are respectively used for the first heat exchange medium capable of exchanging heat with the first medium to be heated to enter and exit; wherein:
the first heating inlet is communicated with the circulating outlet, the first heating outlet is communicated with the circulating inlet, and the first cooling inlet is communicated with the steam outlet.
4. The slurry recovery apparatus according to claim 3, wherein the heating section includes a second heat exchanger (16), the second heat exchanger (16) having a second heating inlet and a second heating outlet through which a second medium to be heated enters and exits, and a second cooling inlet and a second cooling outlet through which a second heat exchange medium that can exchange heat with the second medium to be heated enters and exits, respectively; wherein:
the second heating inlet receives the slurry discharged by the receiving unit (12), the second heating outlet communicates with the evaporation inlet, and the second cooling inlet communicates with the first cooling outlet.
5. The slurry recovery apparatus according to claim 4, characterized in that the slurry recovery apparatus comprises:
a collecting tank (18a), wherein a collecting chamber capable of containing condensate is arranged in the collecting tank (18a), and a collecting tank inlet capable of being communicated with the second cooling outlet and a collecting tank outlet for discharging collected condensate are arranged on the collecting tank (18 a); and
a first filter (18b), the first filter (18b) being capable of receiving condensate discharged by the collection tank outlet and of filtering out solid particles of a predetermined size in the condensate.
6. The slurry recovery apparatus according to claim 3, wherein the evaporation unit (14) includes a gas-liquid separator (150), the gas-liquid separator (150) receiving the steam discharged from the steam outlet and performing gas-liquid separation of the steam, the gas-liquid separator (150) having a separator inlet into which the steam enters, a steam discharge outlet through which the steam obtained after gas-liquid separation is discharged, and a liquid discharge outlet through which the liquid obtained after gas-liquid separation is discharged; wherein:
the separator inlet is communicated with the steam outlet, and the first cooling inlet is communicated with the steam outlet through the steam outlet.
7. The apparatus for recovering pulp according to claim 6, wherein the evaporation unit (14) comprises a first communication pipe (153a) communicating the first cooling inlet and the steam discharge port, and a compressor (154) provided to the first communication pipe (153a), the compressor (154) being capable of compressing the steam in the first communication pipe (153 a); and/or
The evaporation unit (14) comprises a second communicating pipe (153b) communicating the first heating inlet and the circulation outlet, and a first delivery pump (155a) arranged on the second communicating pipe (153b), wherein the first delivery pump (155a) can pump the slurry in the second communicating pipe (153 b).
8. The slurry recovery apparatus according to any one of claims 2 to 7, characterized in that the slurry recovery apparatus comprises a cyclone (19a), and the cyclone (19a) is capable of receiving the distilled material discharged from the discharge port and performing solid-liquid separation on the distilled material.
9. The apparatus for recovering a slurry according to claim 8, wherein the cyclone separator (19a) has a discharge port through which a secondary slurry obtained after the solid-liquid separation is discharged;
the slurry recovery device comprises a slurry treatment unit, wherein the slurry treatment unit comprises a disperser (19c), and the disperser (19c) can receive the secondary slurry discharged from the slurry discharge port and disperse the secondary slurry; or
The slurry treatment unit comprises a disperser (19c) and a second filter (19d) arranged downstream of the disperser (19c), wherein: the disperser (19c) can receive the secondary slurry discharged from the slurry discharge port and disperse the secondary slurry, and the second filter (19d) can filter out solid particles with a preset particle size in the secondary slurry discharged from the disperser (19 c).
10. A pulp preparation system, characterized in that the pulp preparation system (20) comprises a pulping tank (22) and a pulp recovery device according to any one of claims 1-9, which is arranged downstream of the pulping tank (22) and is capable of receiving pulp discharged by the pulping tank (22).
11. A method of slurry recovery, comprising the steps of:
step S10: collecting the slurry;
step S20: heating the slurry collected in the step S10 to obtain steam and a steamed material.
12. The slurry recovery method according to claim 11, wherein, in the step S20, the heating temperature is 80-95 ℃; or
The slurry collected in the step S10 is heated stepwise.
13. The slurry recovery method according to claim 11, characterized in that it comprises the steps of: step S40: cooling the vapor to obtain a condensate; preferably, in the step S40, the steam is gradually cooled to obtain a condensate.
14. The slurry recovery method according to claim 13, wherein the volume of condensate resulting from cooling the steam is V2The volume of the slurry collected in the step S10 is V1Wherein: v2/V1And discharging the steamed material obtained in the step S20 when the content of the steamed material is more than or equal to 0.95.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011109907.3A CN114433250A (en) | 2020-10-16 | 2020-10-16 | Slurry recovery device, slurry preparation system and slurry recovery method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011109907.3A CN114433250A (en) | 2020-10-16 | 2020-10-16 | Slurry recovery device, slurry preparation system and slurry recovery method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114433250A true CN114433250A (en) | 2022-05-06 |
Family
ID=81357296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011109907.3A Pending CN114433250A (en) | 2020-10-16 | 2020-10-16 | Slurry recovery device, slurry preparation system and slurry recovery method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114433250A (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6043180A (en) * | 1994-11-17 | 2000-03-28 | The Dow Chemical Company | Supported catalyst component, supported catalyst, their preparation, and addition polymerization process |
| US20040069684A1 (en) * | 2002-10-10 | 2004-04-15 | Kellogg Brown & Root, Inc. | Catalyst recovery from light olefin FCC effluent |
| CN1694758A (en) * | 2002-09-16 | 2005-11-09 | 切夫里昂菲利普化学有限责任公司 | Process and system for removing heavies from diluent recycled to a slurry polymerization reactor |
| CN101918516A (en) * | 2007-12-20 | 2010-12-15 | 雪佛龙美国公司 | Comprise the heavy oil method for upgrading that spent catalyst reclaims |
| CN102633378A (en) * | 2012-03-30 | 2012-08-15 | 神华集团有限责任公司 | Method and system for recycling catalyst from coal chemical liquid waste |
| CN103298558A (en) * | 2011-01-13 | 2013-09-11 | 日本石油天然气·金属矿物资源机构 | Catalyst recovery system, hydrocarbon synthesis reaction apparatus, hydrocarbon synthesis reaction system, and catalyst recovery method |
| CN106430228A (en) * | 2016-09-08 | 2017-02-22 | 中国石油化工股份有限公司 | Molecular sieve crystallization mother liquor treatment method |
| CN106986738A (en) * | 2017-05-12 | 2017-07-28 | 北京华福工程有限公司 | A kind of slurry bed system producing ethylene with acetylene hydrogenation liquid waste processing and recycled solvent device |
| CN206940761U (en) * | 2017-05-12 | 2018-01-30 | 北京华福工程有限公司 | A kind of slurry bed system producing ethylene with acetylene hydrogenation liquid waste processing and recycled solvent device |
| CN207699643U (en) * | 2018-01-10 | 2018-08-07 | 南京新奥环保技术有限公司 | A kind of system that molybdenum is recycled in the raffinate from catalysts containing molybdenum |
| CN109647544A (en) * | 2019-01-03 | 2019-04-19 | 飞潮（无锡）过滤技术有限公司 | A kind of technique of the composite regenerated waste and old copper bismuth catalyst of recycling of wet-dry change |
| CN110420659A (en) * | 2019-08-15 | 2019-11-08 | 华北电力大学（保定） | A kind of device and method of catalysis oxidation magnesium sulfite, a kind of cobalt nitrate/ZSM-5 molecular sieve catalyst and preparation method thereof |
| CN110436546A (en) * | 2019-08-09 | 2019-11-12 | 广州市中绿环保有限公司 | A kind of evaporative crystallization isolation integral system |
| CN111056903A (en) * | 2019-11-29 | 2020-04-24 | 河北美邦膜科技有限公司 | Novel process and device for recovering benzene partial hydrogenation catalyst |
| CN214320178U (en) * | 2020-10-16 | 2021-10-01 | 中国石油化工股份有限公司 | Slurry recovery device and slurry preparation system |
-
2020
- 2020-10-16 CN CN202011109907.3A patent/CN114433250A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6043180A (en) * | 1994-11-17 | 2000-03-28 | The Dow Chemical Company | Supported catalyst component, supported catalyst, their preparation, and addition polymerization process |
| CN1694758A (en) * | 2002-09-16 | 2005-11-09 | 切夫里昂菲利普化学有限责任公司 | Process and system for removing heavies from diluent recycled to a slurry polymerization reactor |
| US20040069684A1 (en) * | 2002-10-10 | 2004-04-15 | Kellogg Brown & Root, Inc. | Catalyst recovery from light olefin FCC effluent |
| CN101918516A (en) * | 2007-12-20 | 2010-12-15 | 雪佛龙美国公司 | Comprise the heavy oil method for upgrading that spent catalyst reclaims |
| CN103298558A (en) * | 2011-01-13 | 2013-09-11 | 日本石油天然气·金属矿物资源机构 | Catalyst recovery system, hydrocarbon synthesis reaction apparatus, hydrocarbon synthesis reaction system, and catalyst recovery method |
| US20140004011A1 (en) * | 2011-01-13 | 2014-01-02 | Japan Oil, Gas And Metals National Corporation | Catalyst recovery system, hydrocarbon synthesis reaction apparatus, hydrocarbon synthesis reaction system, and catalyst recovery process |
| CN102633378A (en) * | 2012-03-30 | 2012-08-15 | 神华集团有限责任公司 | Method and system for recycling catalyst from coal chemical liquid waste |
| CN106430228A (en) * | 2016-09-08 | 2017-02-22 | 中国石油化工股份有限公司 | Molecular sieve crystallization mother liquor treatment method |
| CN106986738A (en) * | 2017-05-12 | 2017-07-28 | 北京华福工程有限公司 | A kind of slurry bed system producing ethylene with acetylene hydrogenation liquid waste processing and recycled solvent device |
| CN206940761U (en) * | 2017-05-12 | 2018-01-30 | 北京华福工程有限公司 | A kind of slurry bed system producing ethylene with acetylene hydrogenation liquid waste processing and recycled solvent device |
| CN207699643U (en) * | 2018-01-10 | 2018-08-07 | 南京新奥环保技术有限公司 | A kind of system that molybdenum is recycled in the raffinate from catalysts containing molybdenum |
| CN109647544A (en) * | 2019-01-03 | 2019-04-19 | 飞潮（无锡）过滤技术有限公司 | A kind of technique of the composite regenerated waste and old copper bismuth catalyst of recycling of wet-dry change |
| CN110436546A (en) * | 2019-08-09 | 2019-11-12 | 广州市中绿环保有限公司 | A kind of evaporative crystallization isolation integral system |
| CN110420659A (en) * | 2019-08-15 | 2019-11-08 | 华北电力大学（保定） | A kind of device and method of catalysis oxidation magnesium sulfite, a kind of cobalt nitrate/ZSM-5 molecular sieve catalyst and preparation method thereof |
| CN111056903A (en) * | 2019-11-29 | 2020-04-24 | 河北美邦膜科技有限公司 | Novel process and device for recovering benzene partial hydrogenation catalyst |
| CN214320178U (en) * | 2020-10-16 | 2021-10-01 | 中国石油化工股份有限公司 | Slurry recovery device and slurry preparation system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106957124A (en) | A kind of tertiary cathode material produces the processing method and processing system of waste water | |
| CN214320178U (en) | Slurry recovery device and slurry preparation system | |
| CN1986390A (en) | Process of purifying and recovering waste sulfuric acid containing organic impurity | |
| CN108568134A (en) | Cobaltous sulfate evaporation crystallization equipment and technique | |
| CN210786298U (en) | Pyrolysis gas grading treatment device | |
| WO2000062886A1 (en) | Method and apparatus for concentrating slurried solids | |
| CN213408706U (en) | Furfuryl alcohol dead catalyst processing apparatus | |
| CN114433250A (en) | Slurry recovery device, slurry preparation system and slurry recovery method | |
| CN103896780A (en) | Method for recycling toluene diamine from tar | |
| CN206279063U (en) | Oil-bearing sludge treatment equipment | |
| CN212151674U (en) | Liquid evaporation mummification processing apparatus | |
| CN105087058A (en) | Separation method and system for coal liquefaction residues | |
| CN209010306U (en) | A kind of Wastewater in Biologic Pharmacy reuse and vaporising device | |
| CN208995416U (en) | A kind of tetrabromobisphenol A process units | |
| CN106744983A (en) | The slurry processing system of production of polysilicon | |
| CN101524653B (en) | Anion exchange resin production system and production technology | |
| CN110342769A (en) | A kind of energy-efficient sludge treatment equipment | |
| CN206502628U (en) | A kind of organic waste-water treating apparatus | |
| CN104478734A (en) | Method for recycling crude product triethylamine in AKD (alkyl ketene dimer) production | |
| CN107473294A (en) | A kind of handling process and processing system of acrylonitrile recovery tower tower bottoms | |
| CN106809896A (en) | A kind of organic wastewater treating system and method | |
| CN105585199A (en) | Zero discharging treatment process of printing and dyeing wastewater | |
| CN219784700U (en) | Battery grade lithium carbonate apparatus for producing | |
| CN212017649U (en) | Furan resin apparatus for producing | |
| CN109626794A (en) | A kind of process of combined type sludge dewatering |
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 |