CN216497585U - Cooling crystallization system - Google Patents
Cooling crystallization system Download PDFInfo
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- CN216497585U CN216497585U CN202122495696.8U CN202122495696U CN216497585U CN 216497585 U CN216497585 U CN 216497585U CN 202122495696 U CN202122495696 U CN 202122495696U CN 216497585 U CN216497585 U CN 216497585U
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Abstract
The utility model belongs to the technical field of material cooling crystallization, and particularly relates to a cooling crystallization system. The cooling crystallization system comprises more than 2 vacuum cooling devices and a solid-liquid separation device connected with a final stage vacuum cooling device, wherein the vacuum cooling devices are sequentially connected in series; each vacuum cooling device comprises a cooling chamber, and a circulating pump is arranged outside the cooling chamber to enable feed liquid to circularly flow in the cooling chamber; the feed liquid to be crystallized is cooled and concentrated through the vacuum cooling devices of all stages connected in series in sequence, and the feed liquid is guided into a solid-liquid separation device from the final stage vacuum cooling device for solid-liquid separation. The cooling crystallization system has no scar phenomenon on the heat exchange surface, and the scar heat exchange surface does not need to be washed back and forth by hot water, so that the waste of heat and cold energy is avoided; a large-flow material circulating pump and a large-flow refrigerant circulating pump are not needed, and the power consumption is relatively low; the feed liquid is not easy to form crystallization scars on the inner wall of the cooling chamber, and the crystallization efficiency is higher.
Description
Technical Field
The utility model belongs to the technical field of material cooling crystallization, and particularly relates to a cooling crystallization system.
Background
The sodium sulfate recovery in the coal chemical wastewater, the freezing denitration in the lithium hydroxide production and other production processes all relate to mirabilite freezing crystallization. At present, a mirabilite freezing and crystallizing device comprises a crystallizer, a crystallization external cooler, a crystallization circulating pump, a refrigerant circulating pump, a discharge pump, a centrifugal machine and the like. However, the device adopts the crystallization external cooler, and the refrigerant and the material indirectly exchange heat in the crystallization external cooler, so that crystallization scars on the heat exchange surface can be caused, the heat exchange surface needs to be washed by hot water regularly, the working procedures and the consumption of water, heat and manpower are increased, and the waste of heat and cold is caused; the generation of crystal scars also reduces the yield of the product. In order to reduce the scabbing probability, the method adopted at present is to increase the flow rate of the material inside the crystallizer, however, the operation results in large flow rate of the crystallization circulating pump and the refrigerant circulating pump, high power consumption and increased production cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a cooling crystallization system, and aims to solve the problem that the heat exchange surface of an external crystallization cooler is easy to crystallize and scar when materials such as mirabilite and the like are subjected to freezing crystallization at present.
In order to achieve the purpose, the utility model adopts the technical scheme that: providing a cooling crystallization system, which comprises more than 2 vacuum cooling devices and a solid-liquid separation device connected with a final stage vacuum cooling device, wherein the vacuum cooling devices are sequentially connected in series; wherein, vacuum heat sink includes:
the side wall of the cooling chamber is provided with a feed liquid inlet, a feed liquid outlet and a steam outlet;
the circulating pump is assembled on an external circulating pipeline communicated with the cooling chamber and is used for enabling the feed liquid to circularly flow in the corresponding cooling chamber;
the vacuum system is connected with the steam outlet and enables negative pressure to be formed in the temperature reduction chamber;
and cooling and concentrating the feed liquid to be crystallized through vacuum cooling devices connected in series in sequence, and introducing the feed liquid from the final-stage vacuum cooling device into the solid-liquid separation device.
In one embodiment, a material guide mechanism is arranged in an inner cavity of the cooling chamber, the material guide mechanism is in a funnel shape with an upward opening, and the outer edge of a funnel-shaped shell of the material guide mechanism is connected with the side wall of the cooling chamber; the outer circulation pipeline is communicated with the cooling chamber through a material liquid circulation backflow port and a material liquid circulation outlet, the material liquid inlet and the material liquid circulation backflow port are located above the material guide mechanism, and the material liquid outlet and the material liquid circulation outlet are located below the material guide mechanism.
In one embodiment, the feed liquid outlet is used for being communicated with a feed liquid inlet of a next-stage temperature reduction chamber, and a discharge pump is assembled on a communicated feed liquid pipeline.
In one embodiment, the vacuum system comprises a vacuum pump unit communicated with the steam outlet through a steam pipeline, wherein a condensing device is arranged on the steam pipeline, and the condensing device comprises a refrigerant condenser for condensing secondary steam.
Optionally, the condensing device further includes a mother liquid precooler, and the mother liquid precooler is disposed between the refrigerant condenser and the vacuum cooling device.
Optionally, the solid-liquid separation device is provided with a mother liquor outlet, and the mother liquor outlet is communicated with the mother liquor inlet of the mother liquor precooler through a mother liquor pipeline and a matched mother liquor pump.
Optionally, the mother liquor outlet is communicated with a mother liquor inlet of the last stage of the mother liquor precooler through a mother liquor pipeline and a matched mother liquor pump, and the mother liquor outlet of each mother liquor precooler is communicated with a mother liquor inlet of the last stage of the mother liquor precooler through a mother liquor circulation pipeline.
Optionally, a mother liquor tank is arranged on the mother liquor pipeline, and the mother liquor tank is located between the solid-liquid separation device and the mother liquor pump.
In one embodiment, the solid-liquid separation device is a centrifuge.
In one embodiment, the vacuum cooling device is provided with three primary vacuum cooling devices, two secondary vacuum cooling devices and three tertiary vacuum cooling devices, a primary mother liquor precooler and a primary refrigerant condenser are arranged on a steam pipeline of the primary vacuum cooling device along the steam flowing direction, a secondary mother liquor precooler and a secondary refrigerant condenser are arranged on the steam pipeline of the secondary vacuum cooling device along the steam flowing direction, and a tertiary refrigerant condenser is arranged on the steam pipeline of the tertiary vacuum cooling device.
The cooling crystallization system provided by the utility model has the beneficial effects that:
the utility model adopts the multistage vacuum cooling device, reduces the temperature of the material by evaporating a small amount of water, has no indirect heat exchange between the refrigerant and the material, has no scar phenomenon on the heat exchange surface, does not need to adopt hot water to wash the scar heat exchange surface back and forth, and does not cause waste of heat and cold;
the system does not need to be provided with a material circulating pump and a refrigerant circulating pump with large flow, and circulating pumps arranged in the vacuum cooling devices do not need to have too high flow, so that the effect of flowing feed liquid in the vacuum cooling devices is met, and the power consumption is relatively low;
part of water can be evaporated from the feed liquid in each stage of vacuum cooling device, so that the temperature of the feed liquid is gradually reduced, and the concentration of the feed liquid is gradually increased, on one hand, crystallization is prevented from being rapidly separated out due to rapid cooling, and crystallization scars are formed on the inner wall of the cooling chamber, and on the other hand, the concentration of the feed liquid is increased, so that more crystals can be separated out;
after the feed liquid is guided into the cooling chamber of the vacuum cooling device, circulation is formed in the cooling chamber and the outer circulation pipeline under the power of the circulating pump, so that the feed liquid keeps a flowing state, crystals precipitated during cooling of the feed liquid are prevented from being attached to the inner wall of the cooling chamber to form crystal scars, the uniformity of the temperature of the feed liquid is improved, the evaporation cooling efficiency is improved, and the situation that the temperature of the surface of the feed liquid is still too high due to cooling and crystallization of the feed liquid is avoided.
Drawings
Fig. 1 is a schematic overall flow chart of an embodiment of the present invention.
In the figure:
11. a primary vacuum cooling device; 111. a primary cooling chamber; 112. a first-stage circulating pump; 113. a first-stage vacuum pump unit; 114. a first-stage material guide mechanism; 115. a primary discharge pump; 116. a primary mother liquor precooler; 117. a first-stage refrigerant condenser;
12. a secondary vacuum cooling device; 121. a secondary cooling chamber; 122. a second-stage circulating pump; 123. a secondary vacuum pump unit; 124. a second-stage material guide mechanism; 125. a secondary discharge pump; 126. a secondary mother liquor precooler; 127. a secondary refrigerant condenser;
13. a third-stage vacuum cooling device; 131. a third-level cooling chamber; 132. a three-stage circulating pump; 133. a three-stage vacuum pump unit; 134. a three-stage material guide mechanism; 135. a third-stage discharge pump; 137. a tertiary refrigerant condenser;
2. a solid-liquid separation device; 21. a mother liquor pump; 22. a mother liquor tank;
31. an external circulation pipe; 32. a steam line; 33. a feed liquid pipeline;
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit the utility model.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to FIG. 1, a temperature-reducing crystallization system provided by the present invention will now be described. The cooling crystallization system comprises more than 2 vacuum cooling devices and a solid-liquid separation device connected with a final stage vacuum cooling device, wherein the vacuum cooling devices are sequentially connected in series;
as a specific embodiment provided by the cooling crystallization system of the present invention, three vacuum cooling devices are provided, which are respectively a primary vacuum cooling device 11, a secondary vacuum cooling device 12 and a tertiary vacuum cooling device 13, and accordingly, each vacuum cooling device respectively comprises a primary cooling chamber 111, a secondary cooling chamber 121 and a tertiary cooling chamber 131, and a feed liquid inlet, a feed liquid outlet and a steam outlet are provided on the side wall of each cooling chamber;
each vacuum cooling device further comprises a circulating pump: a first-stage circulating pump 112 is assembled on the outer circulating pipeline 31 communicated with the first-stage cooling chamber 111, a second-stage circulating pump 122 is arranged on the outer circulating pipeline 31 communicated with the second-stage cooling chamber 121, a third-stage circulating pump 132 is arranged on the outer circulating pipeline 31 communicated with the third-stage cooling chamber 131, and the first-stage circulating pump 112, the second-stage circulating pump 122 and the third-stage circulating pump 132 are used for enabling feed liquid to circularly flow in each cooling chamber;
each vacuum cooling device also comprises a vacuum system which is respectively connected with the steam outlet to form negative pressure in each cooling chamber;
wherein, the feed liquid to be crystallized is cooled and concentrated by a primary vacuum cooling device 11 and a secondary vacuum cooling device 12 which are connected in series in sequence, and then is guided into a solid-liquid separation device 2 from a tertiary vacuum cooling device 13, and the feed liquid is subjected to solid-liquid separation by the solid-liquid separation device 2.
The cooling crystallization system provided by the utility model has the beneficial effects that:
the utility model adopts the multistage vacuum cooling device, reduces the temperature of the material by evaporating a small amount of water, has no indirect heat exchange between the refrigerant and the material, has no scar phenomenon on the heat exchange surface, does not need to adopt hot water to wash the scar heat exchange surface back and forth, and does not cause waste of heat and cold;
the system does not need to be provided with a material circulating pump and a refrigerant circulating pump with large flow, and circulating pumps arranged in the vacuum cooling devices do not need to have too high flow, so that the effect of flowing feed liquid in the vacuum cooling devices is met, and the power consumption is relatively low;
part of water can be evaporated from the feed liquid in each stage of vacuum cooling device, so that the temperature of the feed liquid is gradually reduced, and the concentration of the feed liquid is gradually increased, on one hand, crystallization is prevented from being rapidly separated out due to rapid cooling, and crystallization scars are formed on the inner wall of the cooling chamber, and on the other hand, the concentration of the feed liquid is increased, so that more crystals can be separated out;
after the feed liquid is introduced into the cooling chamber of the vacuum cooling device, circulation is formed in the cooling chamber and the outer circulation pipeline 31 under the power of the circulating pump, so that the feed liquid keeps a flowing state, crystals precipitated during cooling of the feed liquid are prevented from adhering to the inner wall of the cooling chamber to form crystal scars, the uniformity of the temperature of the feed liquid is improved, the evaporation cooling efficiency is improved, and the situation that the temperature of the surface of the feed liquid is reduced and crystallized and the temperature of the interior of the feed liquid is still too high is avoided.
As a specific implementation mode provided by the cooling crystallization system, the inner cavity of each cooling chamber is provided with a material guide mechanism: a first-stage material guide mechanism 114 is arranged in the first-stage cooling chamber 111, a second-stage material guide mechanism 124 is arranged in the second-stage cooling chamber 121, and a third-stage material guide mechanism 134 is arranged in the third-stage cooling chamber 131; each material guide mechanism is in a funnel shape with an upward opening, and the outer edge of a funnel-shaped shell of each material guide mechanism is connected with the side wall of the cooling chamber; the external circulation pipeline 31 is communicated with each cooling chamber through a feed liquid circulation return port and a feed liquid circulation outlet, the feed liquid inlet and the feed liquid circulation return port are positioned above the material guide mechanism, and the feed liquid outlet and the feed liquid circulation outlet are positioned below the material guide mechanism. The material guide mechanism is arranged to facilitate the sufficient circulation of the feed liquid in the cooling chamber, and further avoid the crystallization scars formed by the feed liquid attached to the inner wall of the cooling chamber after the temperature of the feed liquid is reduced.
As a specific embodiment provided by the cooling crystallization system of the present invention, the feed liquid outlet is used for communicating with the feed liquid inlet of the next stage cooling chamber: a feed liquid outlet of the first-stage temperature reduction chamber 111 is communicated with a feed liquid inlet of the second-stage temperature reduction chamber 121 through a feed liquid pipeline 33, a feed liquid outlet of the second-stage temperature reduction chamber 121 is communicated with a feed liquid inlet of the third-stage temperature reduction chamber 131 through a feed liquid pipeline 33, and a feed liquid outlet of the third-stage temperature reduction chamber 131 is communicated with a feed liquid inlet of the solid-liquid separation device 2 through a feed liquid pipeline 33;
a discharge pump is arranged on the communicated material liquid pipeline 33: a first-stage discharge pump 115 is arranged on a feed liquid pipeline 33 between the first-stage cooling chamber 111 and the second-stage cooling chamber 121, a second-stage discharge pump 125 is arranged on the feed liquid pipeline 33 between the second-stage cooling chamber 121 and the third-stage cooling chamber 131, a third-stage discharge pump 135 is arranged on the feed liquid pipeline 33 between the third-stage cooling chamber 131 and the solid-liquid separation device 2, the first-stage discharge pump 115 and the second-stage discharge pump 125 are used for guiding materials in the previous cooling chamber into the next cooling chamber, and the third-stage discharge pump 135 is used for guiding feed liquid in the third-stage cooling chamber 131 into the solid-liquid separation device 2.
As a specific embodiment provided by the cooling crystallization system of the present invention, the vacuum system comprises a vacuum pump unit communicated with a steam outlet through a steam pipeline 32, the steam outlet of the primary cooling chamber 111 is connected with a primary vacuum pump unit 113 through the steam pipeline 32, the steam outlet of the secondary cooling chamber 121 is connected with a secondary vacuum pump unit 123 through the steam pipeline 32, and the steam outlet of the tertiary cooling chamber 131 is connected with a tertiary vacuum pump unit 133 through the steam pipeline 32; each steam pipeline 32 is provided with a condensing device, and the condensing device comprises a refrigerant condenser for condensing secondary steam. The secondary steam exchanges heat with the refrigerant, and the phenomenon of scabbing of the heat exchange surface can not occur.
On the basis of the above embodiment, the condensing device further comprises a mother liquor precooler, and the mother liquor precooler is arranged between the refrigerant condenser and the vacuum cooling device. The mother liquor precooler is used for preliminarily cooling secondary steam and can improve the condensation efficiency when being matched with a refrigerant condenser.
On the basis of the above embodiment, the solid-liquid separation device 2 is provided with a mother liquor outlet, and the mother liquor outlet is communicated with a mother liquor inlet of the mother liquor precooler through a mother liquor pipeline and a matched mother liquor pump 21 so as to fully utilize the cold energy of the mother liquor to cool the secondary steam led into the mother liquor precooler and reduce the waste of the cold energy.
On the basis of the above embodiment, the mother liquor outlet is communicated with the mother liquor inlet of the last stage of mother liquor precooler through a mother liquor pipeline and a matched mother liquor pump, and the mother liquor outlet of each mother liquor precooler is communicated with the mother liquor inlet of the last stage of mother liquor precooler through a mother liquor flow pipeline, so that the temperature of the mother liquor introduced into each stage of mother liquor precooler is sequentially increased for precooling the steam with different temperatures respectively.
In addition to the above embodiment, the mother liquor pipe is provided with the mother liquor tank 22, and the mother liquor tank 22 is located between the solid-liquid separation device 2 and the mother liquor pump 21 and is used for temporarily storing the mother liquor.
As a specific embodiment provided by the cooling crystallization system of the present invention, a primary mother liquid precooler 116 and a primary refrigerant condenser 117 are arranged on a steam pipeline of the primary vacuum cooling device 11 along the steam flowing direction, a secondary mother liquid precooler 126 and a secondary refrigerant condenser 127 are arranged on a steam pipeline of the secondary vacuum cooling device 12 along the steam flowing direction, a tertiary refrigerant condenser 137 is arranged on a steam pipeline of the tertiary vacuum cooling device 13, a mother liquid outlet of the solid-liquid separation device 2 is communicated with a mother liquid inlet of the secondary mother liquid precooler 126 through a mother liquid pipeline and a matched mother liquid pump 21, and a mother liquid outlet of the secondary mother liquid precooler 126 is communicated with a mother liquid inlet of the primary mother liquid precooler 116 through a mother liquid flowing pipeline.
As a specific implementation mode provided by the cooling crystallization system, the solid-liquid separation device is a centrifuge. The mother liquor and the crystal can be separated by a centrifugal method, and the operation is simple and convenient.
Taking mirabilite cooling crystallization as an example, the operation flow adopted by the utility model to solve the technical problem is explained as follows:
high-temperature raw material liquid (such as sodium sulfate aqueous solution, mixed aqueous solution of sodium sulfate and sodium chloride and the like) with the temperature of more than 30 ℃ is conveyed to a primary vacuum cooling device 11 by a material liquid pump, and the material liquid circularly flows in a primary cooling chamber 111 under the action of a primary circulating pump 112;
under the action of a primary vacuum pump unit 113, the high-temperature raw material liquid flashes secondary steam to cool the material to reach 15-25 ℃, the secondary steam is cooled and condensed by a primary mother liquid precooler 116 and a primary refrigerant (about 10 ℃) condenser 117, and non-condensable gas is sucked and discharged into the atmosphere by the primary vacuum pump unit 113;
the material in the primary cooling chamber 111 is conveyed to the secondary vacuum cooling device 12 by the primary discharge pump 115 to continue flash evaporation and crystallization, and the feed liquid circularly flows in the secondary cooling chamber 121 under the action of the secondary circulating pump 122;
under the action of the secondary vacuum pump unit 123, the material liquid in the secondary cooling chamber 121 is subjected to flash evaporation of secondary steam to cool the material, so that the temperature of the material reaches 5-15 ℃, the secondary steam is cooled and condensed by a secondary mother liquid precooler 126 and a secondary refrigerant (about 0 ℃) condenser 127, and non-condensable gas is sucked by the secondary vacuum pump unit 123 and discharged into the atmosphere;
the materials in the secondary cooling chamber 121 are conveyed to the tertiary vacuum cooling device 13 by the secondary discharge pump 125 to be continuously subjected to flash evaporation crystallization, and the feed liquid circularly flows in the tertiary cooling chamber 131 under the action of the tertiary circulating pump 132;
under the action of the three-stage vacuum pump unit 133, the feed liquid in the three-stage cooling chamber 131 is subjected to flash evaporation of secondary steam to cool the material, so that the temperature of the material reaches-5 ℃ to 0 ℃, the secondary steam is cooled and condensed by a three-stage refrigerant (about-10 ℃) condenser 137, and non-condensable gas is sucked and exhausted into the atmosphere by the three-stage vacuum pump unit 133;
the materials in the three-stage cooling chamber 131 enter a solid-liquid separation device 2 centrifuge for centrifugal separation under the action of a three-stage discharge pump 135, and the separated sodium sulfate decahydrate crystals enter the next procedure. Mother liquor separated by the centrifuge is conveyed to the mother liquor tank 22 by the mother liquor pump 21 for temporary storage, enters the mother liquor inlet of the secondary mother liquor precooler 126, is conveyed to the mother liquor inlet of the primary mother liquor precooler 116 by the mother liquor outlet of the secondary mother liquor precooler 126, and is used for heat exchange and cooling of secondary steam entering the secondary mother liquor precooler 126 and the primary mother liquor precooler 116, so that the cold quantity of the mother liquor is fully utilized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A cooling crystallization system is characterized by comprising more than 2 vacuum cooling devices and a solid-liquid separation device connected with a final stage vacuum cooling device, wherein the vacuum cooling devices are sequentially connected in series; wherein, vacuum heat sink includes:
the side wall of the cooling chamber is provided with a feed liquid inlet, a feed liquid outlet and a steam outlet;
the circulating pump is assembled on an external circulating pipeline communicated with the cooling chamber and is used for enabling the feed liquid to circularly flow in the corresponding cooling chamber;
the vacuum system is connected with the steam outlet and enables negative pressure to be formed in the temperature reduction chamber;
and cooling and concentrating the feed liquid to be crystallized through vacuum cooling devices connected in series in sequence, and introducing the feed liquid from the final-stage vacuum cooling device into the solid-liquid separation device.
2. The cooling crystallization system of claim 1, wherein a material guiding mechanism is arranged in an inner cavity of the cooling chamber, the material guiding mechanism is in a funnel shape with an upward opening, and the outer edge of a funnel-shaped shell of the material guiding mechanism is connected with the side wall of the cooling chamber; the outer circulation pipeline is communicated with the cooling chamber through a material liquid circulation backflow port and a material liquid circulation outlet, the material liquid inlet and the material liquid circulation backflow port are located above the material guide mechanism, and the material liquid outlet and the material liquid circulation outlet are located below the material guide mechanism.
3. The cooling crystallization system of claim 1, wherein the feed liquid outlet is used for being communicated with a feed liquid inlet of a next-stage cooling chamber, and a discharge pump is assembled on a communicated feed liquid pipeline.
4. The cooling crystallization system of claim 1, wherein the vacuum system comprises a vacuum pump unit in communication with the vapor outlet via a vapor line, wherein the vapor line is provided with a condensing device, and the condensing device comprises a refrigerant condenser for condensing secondary vapor.
5. The temperature-reducing crystallization system of claim 4, wherein the condensing device further comprises a mother liquor pre-cooler disposed between the refrigerant condenser and the vacuum temperature-reducing device.
6. The cooling crystallization system of claim 5, wherein the solid-liquid separation device is provided with a mother liquid outlet, and the mother liquid outlet is communicated with the mother liquid inlet of the mother liquid precooler through a mother liquid pipeline and a matched mother liquid pump.
7. The temperature-reducing crystallization system as claimed in claim 6, wherein the mother liquor outlet is communicated with the mother liquor inlet of the last stage of the mother liquor precooler through a mother liquor pipeline and a matched mother liquor pump, and the mother liquor outlet of each mother liquor precooler is communicated with the mother liquor inlet of the last stage of the mother liquor precooler through a mother liquor flow pipeline.
8. The cooling crystallization system of claim 6, wherein a mother liquor tank is arranged on the mother liquor pipeline, and the mother liquor tank is positioned between the solid-liquid separation device and the mother liquor pump.
9. The temperature-reducing crystallization system of claim 1, wherein the solid-liquid separation device is a centrifuge.
10. The cooling crystallization system of claim 1, wherein there are three vacuum cooling devices, namely a primary vacuum cooling device, a secondary vacuum cooling device and a tertiary vacuum cooling device, wherein a primary mother liquor pre-cooler and a primary refrigerant condenser are arranged on the steam pipeline of the primary vacuum cooling device along the steam flowing direction, a secondary mother liquor pre-cooler and a secondary refrigerant condenser are arranged on the steam pipeline of the secondary vacuum cooling device along the steam flowing direction, and a tertiary refrigerant condenser is arranged on the steam pipeline of the tertiary vacuum cooling device.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115121003A (en) * | 2022-07-18 | 2022-09-30 | 杭州安永环保科技有限公司 | Continuous crystallization method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115121003A (en) * | 2022-07-18 | 2022-09-30 | 杭州安永环保科技有限公司 | Continuous crystallization method |
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