CN213506068U - Four-effect evaporation concentration system for treating waste water containing calcium chloride - Google Patents
Four-effect evaporation concentration system for treating waste water containing calcium chloride Download PDFInfo
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- CN213506068U CN213506068U CN202022377133.4U CN202022377133U CN213506068U CN 213506068 U CN213506068 U CN 213506068U CN 202022377133 U CN202022377133 U CN 202022377133U CN 213506068 U CN213506068 U CN 213506068U
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Abstract
The utility model relates to a four-effect evaporation concentration system for treating waste water containing calcium chloride, which comprises a primary condensation tank, an I-effect forced circulation evaporator, an II-effect forced circulation evaporator, an III-effect forced circulation evaporator, an IV-effect forced circulation evaporator, a surface condenser, a vacuum pump and a secondary condensation water tank which are connected in sequence; the surface condenser is connected with the IV-effect forced circulation evaporator; the vacuum pump is connected with the surface condenser; the I, II, III and IV effect forced circulation evaporators respectively comprise a heating chamber, a separation chamber, a circulating pump and a discharge pump. The utility model discloses can effectively reduce the quantity of live steam, through full flow material and secondary steam countercurrent flow, make full use of latent heat of steam makes the latent heat of live steam do the quartic utilization, reduces the energy consumption of device to reduce the running cost.
Description
Technical Field
The utility model relates to a four-effect evaporation concentration system for containing calcium chloride's waste water treatment, the waste water treatment system who contains calcium chloride that produces in the concretely relates to Epichlorohydrin (ECH) production process belongs to waste water treatment technical field.
Background
In the production process of Epoxy Chloropropane (ECH), a large amount of by-product calcium chloride is contained in organic wastewater generated after saponification reaction, and high-salt wastewater can inhibit and poison the growth and reproduction of microorganisms, so that the biochemical treatment effect is not ideal, and the wastewater treatment does not reach the standard. Therefore, the high-salinity wastewater needs to be concentrated by an evaporation and concentration device.
The conventional process for treating calcium chloride wastewater adopts five-effect cross flow or three-effect countercurrent for evaporation concentration, wherein the five-effect cross flow uses two streams of raw steam as a heat source, and is essentially a two-effect and three-effect process, latent heat of the raw steam is respectively utilized twice and three times, and the steam utilization efficiency is low; the three-effect countercurrent uses one stream of raw steam as a heat source, the latent heat of the raw steam is utilized for three times, the two processes have the treatment effects, but the steam consumption is high, the operation cost is high, and the three-effect countercurrent is in contradistinction with the principle of energy conservation and emission reduction.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the problem that prior art energy consumption is high, provide a four-effect evaporation concentration system for containing calcium chloride's waste water treatment, the waste water treatment system who contains calcium chloride that produces in the concretely relates to Epichlorohydrin (ECH) production process, the utility model discloses can effectively reduce the quantity of live steam, through full flow material and secondary steam countercurrent flow, make full use of steam latent heat, make the latent heat of live steam do the quartic utilization, reduce the energy consumption of device to reduce the running cost. The utility model adopts the technical scheme as follows:
a four-effect evaporation concentration system for treating waste water containing calcium chloride comprises a primary condensing tank, an I-effect forced circulation evaporator, a II-effect forced circulation evaporator, a III-effect forced circulation evaporator, an IV-effect forced circulation evaporator, a primary preheater, a secondary preheater, a tertiary preheater, a surface condenser, a secondary condensing tank and a vacuum pump;
the I-effect forced circulation evaporator comprises an I-effect heating chamber, an I-effect separation chamber, an I-effect circulating pump and an I-effect discharge pump;
the II-effect forced circulation evaporator comprises an II-effect heating chamber, an II-effect separation chamber, an II-effect circulating pump and an II-effect discharge pump;
the III-effect forced circulation evaporator comprises a III-effect heating chamber, a III-effect separation chamber, a III-effect circulating pump and a III-effect discharge pump;
the IV-effect forced circulation evaporator comprises an IV-effect heating chamber, an IV-effect separation chamber, an IV-effect circulating pump and an IV-effect discharging pump;
the bottom of the first-effect separation chamber is connected with a first-effect circulating pump through a first-effect circulating pipe, and the first-effect circulating pump is connected with the bottom of the first-effect heating chamber; the lower part of the I-effect heating chamber is connected with the top of a primary condensation water tank, the top of the I-effect heating chamber is connected with the lower part of the I-effect separation chamber, the bottom outlet of the primary condensation water tank is connected with a primary preheater, and the primary preheater is respectively connected with an I-effect circulating pipe and a secondary preheater; the upper part of the first-effect heating chamber is provided with a raw steam inlet, the inlet of the first-effect discharging pump is connected with the first-effect circulating pipe, and concentrated solution is discharged through the outlet of the first-effect discharging pump;
the top of the first-effect separation chamber is connected with the upper part of the second-effect heating chamber, the bottom of the second-effect separation chamber is connected with the inlet of the second-effect circulating pump through a second-effect circulating pipe, and the outlet of the second-effect circulating pump is connected with the bottom of the second-effect heating chamber; the top of the second-effect heating chamber is connected with the lower part of the second-effect separation chamber, the inlet of a second-effect discharge pump is connected with a second-effect circulating pipe, the outlet of the second-effect discharge pump is connected with a first-stage preheater, and a second-stage preheater is respectively connected with the second-effect circulating pipe and a third-stage preheater;
the top of the second-effect separation chamber is connected with the upper part of the third-effect heating chamber, the bottom of the third-effect separation chamber is connected with the inlet of the third-effect circulating pump through a third-effect circulating pipe, and the outlet of the third-effect circulating pump is connected with the bottom of the third-effect heating chamber; the top of the III-effect heating chamber is connected with the lower part of the III-effect separation chamber, the inlet of a III-effect discharge pump is connected with a III-effect circulating pipe, the outlet of the III-effect discharge pump is connected with a secondary preheater, a tertiary preheater is connected with the III-effect circulating pipe, and a condensed water outlet is arranged on the tertiary preheater;
the top of the III-effect separation chamber is connected with the upper part of the IV-effect heating chamber, the bottom of the IV-effect separation chamber is connected with the inlet of the IV-effect circulating pump through an IV-effect circulating pipe, and the outlet of the IV-effect circulating pump is connected with the bottom of the IV-effect heating chamber; the top of the IV-effect heating chamber is connected with the lower part of the IV-effect separation chamber, the inlet of an IV-effect discharge pump is connected with an IV-effect circulating pipe, and the outlet of the IV-effect discharge pump is connected with a tertiary preheater;
the top of the IV-effect separation chamber is connected with a surface condenser, the lower part of the surface condenser is respectively connected with the top of a secondary condensate water tank and an inlet of a vacuum pump, and noncondensable gas is discharged through an outlet of the vacuum pump; the bottom of the surface condenser is provided with a circulating water upper water gap and a circulating water return port; a calcium chloride waste water inlet is arranged on the IV-effect circulating pipe;
the lower part of the IV-effect heating chamber is connected with the top of a secondary condensate water tank, the bottom of the secondary condensate water tank is connected with a secondary condensate water pump, and secondary condensate water is discharged through an outlet of the secondary condensate water pump.
Furthermore, the first-effect separation chamber, the second-effect separation chamber, the third-effect separation chamber and the fourth-effect separation chamber are all made of non-ferrous metal and carbon steel composite plates, wherein the first-effect separation chamber is made of TA9+ Q345R, the second-effect separation chamber is made of TA10+ Q345R, the third-effect separation chamber is made of TA2+ Q345R, and the fourth-effect separation chamber is made of TA2+ Q345R.
Further, the lower parts of the liquid levels of the inner walls of the I-effect separation chamber, the II-effect separation chamber, the III-effect separation chamber and the IV-effect separation chamber are polished to prevent the wall surfaces from scaling;
furthermore, the material contact parts of the I-effect heating chamber, the II-effect heating chamber, the III-effect heating chamber and the IV-effect heating chamber are all made of non-ferrous metal materials, and the non-material contact parts are made of carbon steel materials; the material contact part of the I-effect heating chamber adopts TA9, and the non-material contact part adopts carbon steel; the material contact part of the II-effect heating chamber adopts TA10, and the non-material contact part adopts carbon steel; the material contact part of the III-effect heating chamber adopts TA2, and the non-material contact part adopts carbon steel; and the material contact part of the IV-effect heating chamber adopts TA2, and the non-material contact part adopts carbon steel.
Further, the I-effect circulating pump, the II-effect circulating pump, the III-effect circulating pump and the IV-effect circulating pump are all horizontal axial-flow pumps, wherein the material of a pump shell and an impeller of the I-effect circulating pump is TA9, the material of the pump shell and the impeller of the II-effect circulating pump is TA10, the material of the pump shell and the impeller of the III-effect circulating pump is TA2, and the material of the pump shell and the impeller of the IV-effect circulating pump is TA 2.
Further, it is the centrifugal pump that I imitates the discharge pump, II imitate the discharge pump, III imitate the discharge pump, IV imitate the discharge pump, wherein I imitates discharge pump case and impeller material and be TA9, II imitate discharge pump case and impeller material and be TA10, III imitate discharge pump case and impeller material and be TA2, IV imitate discharge pump case and impeller material and be TA 2.
Further, the vacuum pump is a water ring vacuum pump, and the secondary condensate pump is a centrifugal water pump;
furthermore, the primary condensation water tank, the secondary condensation water tank and the surface condenser are all made of carbon steel.
When the device is used, calcium chloride wastewater is injected into each effect forced circulation evaporator, when the heating chamber reaches a certain liquid level, the effect I, II, III and IV forced circulation pumps are started, the vacuum pump is started to enable the interior of the device to reach negative pressure, the steam generation valve is opened to heat the effect I heating chamber, and generated primary condensed water is discharged; after the first effect separation chamber generates secondary steam, the second effect heating chamber is opened to exhaust the non-condensable gas valve to pump away the non-condensable gas in the system. Adjusting the vacuum degree to reach the design pressure, opening a condensed water discharge valve to discharge, and automatically interlocking the input liquid level with the feeding valve; the first effect is fed by the circulating pipe waste water, the first effect is conveyed into the first effect heating chamber for heating along with circulating liquid through the first effect circulating pump, the later superheated liquid enters the first effect separation chamber for evaporation through the circulating pipe, generated secondary steam enters the second effect heating chamber for heating through a secondary steam pipeline, and the concentrated waste water is extracted through the circulating pipe and then is conveyed to the next procedure through a discharge pump; the rest II, III and IV effect processes are analogized in this way, IV effect secondary steam directly enters the surface cooler for condensation, condensed water flows into a condensed water tank, generated non-condensable gas is pumped out by a vacuum pump and is discharged to an incinerator, and the I, II and III effect non-condensable gas is also gathered to the surface cooler and is pumped out by the vacuum pump; the subsequent process is heated, the non-condensable gas valve and the condensed water discharging valve of the III-effect heating chamber and the IV-effect heating chamber are opened in sequence, and the liquid level and the feeding regulating valve are put into automatic interlocking. The I-effect condensed water is fed to the first-stage, second-stage and third-stage feeding preheaters for heating and feeding, and the condensed water generated by the II-effect, III-effect and IV-effect heating chambers flows into the secondary condensed water tank and is discharged by a pump.
Compared with the prior art, the utility model has the following advantage:
the utility model discloses the form of four effects steam, the full adverse current of waste water is compared with traditional five effects cross-flow, has reduced under the prerequisite that an effect body, only needs one to give birth to steam, at the aspect of steam consumption greatly reduced, the effectual running cost that has reduced to the equipment investment has been reduced.
Drawings
FIG. 1 is a structural diagram of a four-effect evaporation and concentration system of the present invention.
In the figure, a 1-effect separation chamber and an I-effect separation chamber are arranged; 2. a second effect separation chamber; 3. a III-effect separation chamber; 4. IV effect separation chamber; 5. an I-effect heating chamber; 6. II effect heating chamber; 7. a III-effect heating chamber; 8. IV effect heating chamber; 9. a surface condenser; 10. a vacuum pump; 11. a primary preheater; 12. a secondary preheater; 13. a tertiary preheater; 14. a primary condensate water tank, a 15 effect I circulating pump; 16. II effect circulating pump; 17. III effect circulating pump; 18. IV effect circulating pumps; 19. a secondary condensate tank; 20. i effect discharge pump; 21. a second effect discharge pump; 22. III effect discharge pump; 23. IV effect discharge pump; 24. a secondary condensate pump.
Detailed Description
The invention will be further described with reference to specific embodiments, and the advantages and features of the invention will become apparent as the description proceeds. The examples are illustrative only and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications may be made without departing from the spirit and scope of the invention.
Example 1: four-effect evaporation concentration system for treating waste water containing calcium chloride
As shown in fig. 1, the four-effect evaporation concentration system includes a primary condensation tank 14, an i-effect forced circulation evaporator, a ii-effect forced circulation evaporator, a iii-effect forced circulation evaporator, an iv-effect forced circulation evaporator, a primary preheater 11, a secondary preheater 12, a tertiary preheater 13, a surface condenser 9, a secondary condensation tank 19 and a vacuum pump 10;
the I-effect forced circulation evaporator comprises an I-effect heating chamber 5, an I-effect separation chamber 1, an I-effect circulating pump 15 and an I-effect discharge pump 20;
the II-effect forced circulation evaporator comprises an II-effect heating chamber 6, an II-effect separation chamber 2, an II-effect circulating pump 16 and an II-effect discharge pump 21;
the III-effect forced circulation evaporator comprises a III-effect heating chamber 7, a III-effect separation chamber 3, a III-effect circulating pump 17 and a III-effect discharge pump 22;
the IV-effect forced circulation evaporator comprises an IV-effect heating chamber 8, an IV-effect separation chamber 4, an IV-effect circulating pump 18 and an IV-effect discharge pump 23;
the bottom of the I-effect separation chamber 1 is connected with an I-effect circulating pump 15 through an I-effect circulating pipe, and the I-effect circulating pump 15 is connected with the bottom of the I-effect heating chamber 5; the lower part of the I-effect heating chamber 5 is connected with the top of a primary condensation water tank 14, the top of the I-effect heating chamber 5 is connected with the lower part of the I-effect separation chamber 1, the bottom outlet of the primary condensation water tank 19 is connected with a primary preheater 11, and the primary preheater 11 is respectively connected with an I-effect circulating pipe and a secondary preheater 12; the upper part of the first-effect heating chamber 5 is provided with a raw steam inlet, the inlet of a first-effect discharge pump 20 is connected with a first-effect circulating pipe, and concentrated solution is discharged outside through the outlet of the first-effect discharge pump 20;
the top of the first-effect separation chamber 2 is connected with the upper part of the second-effect heating chamber 6, the bottom of the second-effect separation chamber 2 is connected with the inlet of a second-effect circulating pump 16 through a second-effect circulating pipe, and the outlet of the second-effect circulating pump 16 is connected with the bottom of the second-effect heating chamber 6; the top of the II-effect heating chamber 6 is connected with the lower part of the II-effect separation chamber 2, the inlet of the II-effect discharge pump 21 is connected with the II-effect circulating pipe, the outlet of the II-effect discharge pump 21 is connected with the first-stage preheater 11, and the second-stage preheater 12 is respectively connected with the II-effect circulating pipe and the third-stage preheater 13;
the top of the second-effect separation chamber 3 is connected with the upper part of the third-effect heating chamber 7, the bottom of the third-effect separation chamber 3 is connected with the inlet of a third-effect circulating pump 17 through a third-effect circulating pipe, and the outlet of the third-effect circulating pump 17 is connected with the bottom of the third-effect heating chamber 7; the top of the III-effect heating chamber 7 is connected with the lower part of the III-effect separation chamber 3, the inlet of the III-effect discharge pump 22 is connected with a III-effect circulating pipe, the outlet of the III-effect discharge pump 22 is connected with the secondary preheater 12, the tertiary preheater 13 is connected with the III-effect circulating pipe, and the tertiary preheater 13 is provided with a condensed water outlet;
the top of the III-effect separation chamber 3 is connected with the upper part of the IV-effect heating chamber 8, the bottom of the IV-effect separation chamber 8 is connected with the inlet of the IV-effect circulating pump 18 through an IV-effect circulating pipe, and the outlet of the IV-effect circulating pump 18 is connected with the bottom of the IV-effect heating chamber 8; the top of the IV-effect heating chamber 8 is connected with the lower part of the IV-effect separation chamber 4, the inlet of an IV-effect discharge pump 23 is connected with an IV-effect circulating pipe, and the outlet of the IV-effect discharge pump 23 is connected with a three-stage preheater 13;
the top of the IV-effect separation chamber 4 is connected with a surface condenser 9, the lower part of the surface condenser 9 is respectively connected with the top of a secondary condensed water tank 19 and an inlet of a vacuum pump 10, and non-condensed gas is discharged out through the vacuum pump 10; the bottom of the surface condenser 9 is provided with a circulating water upper water gap and a circulating water return port; a calcium chloride waste water inlet is arranged on the IV-effect circulating pipe;
the lower part of the IV-effect heating chamber 8 is connected with the top of a secondary condensed water tank 19, the bottom of the secondary condensed water tank 19 is connected with a secondary condensed water pump 24, and secondary condensed water is discharged through an outlet of the secondary condensed water pump 24.
Example 2: four-effect evaporation concentration system for treating waste water containing calcium chloride
On the basis of example 1, as shown in fig. 1, the first effect separation chamber 1, the second effect separation chamber 2, the third effect separation chamber 3 and the fourth effect separation chamber 4 are made of non-ferrous metal and carbon steel composite plates, wherein the first effect separation chamber 1 is made of TA9+ Q345R, the second effect separation chamber 2 is made of TA10+ Q345R, the third effect separation chamber 3 is made of TA2+ Q345R, and the fourth effect separation chamber 4 is made of TA2+ Q345R;
the lower parts of the liquid levels of the inner walls of the first effect separation chamber 1, the second effect separation chamber 2, the third effect separation chamber 3 and the fourth effect separation chamber 4 are polished to prevent the wall surfaces from scaling;
the material contact parts of the I-effect heating chamber 5, the II-effect heating chamber 6, the III-effect heating chamber 7 and the IV-effect heating chamber 8 are all made of nonferrous metal materials, and the non-material contact parts are made of carbon steel materials; the material contact part of the I-effect heating chamber 5 adopts TA9, and the non-material contact part adopts carbon steel; the material contact part of the II-effect heating chamber 6 adopts TA10, and the non-material contact part adopts carbon steel; the material contact part of the III-effect heating chamber 7 adopts TA2, and the non-material contact part adopts carbon steel; the material contact part of the IV-effect heating chamber 8 adopts TA2, and the non-material contact part adopts carbon steel;
the I-effect circulating pump 15, the II-effect circulating pump 16, the III-effect circulating pump 17 and the IV-effect circulating pump 18 are all horizontal axial-flow pumps, wherein the material of a pump shell and an impeller of the I-effect circulating pump 15 is TA9, the material of a pump shell and an impeller of the II-effect circulating pump 16 is TA10, the material of a pump shell and an impeller of the III-effect circulating pump 17 is TA2, and the material of a pump shell and an impeller of the IV-effect circulating pump 18 is TA 2.
The first-effect discharging pump 20, the second-effect discharging pump 21, the third-effect discharging pump 22 and the fourth-effect discharging pump 23 are all centrifugal pumps, wherein the pump shell and the impeller of the first-effect discharging pump 20 are made of TA9, the pump shell and the impeller of the second-effect discharging pump 21 are made of TA10, the pump shell and the impeller of the third-effect discharging pump 22 are made of TA2, and the pump shell and the impeller of the fourth-effect discharging pump 23 are made of TA 2;
the vacuum pump 10 is a water ring vacuum pump, and the secondary condensate pump 24 is a centrifugal pump;
the primary condensate water tank 14, the secondary condensate water tank 19 and the surface condenser 9 are all made of carbon steel.
Claims (7)
1. A four-effect evaporation concentration system for treating waste water containing calcium chloride is characterized in that the four-effect evaporation concentration system comprises a primary condensing tank, an I-effect forced circulation evaporator, a II-effect forced circulation evaporator, a III-effect forced circulation evaporator, an IV-effect forced circulation evaporator, a primary preheater, a secondary preheater, a tertiary preheater, a surface condenser, a secondary condensing tank and a vacuum pump;
the I-effect forced circulation evaporator comprises an I-effect heating chamber, an I-effect separation chamber, an I-effect circulating pump and an I-effect discharge pump;
the II-effect forced circulation evaporator comprises an II-effect heating chamber, an II-effect separation chamber, an II-effect circulating pump and an II-effect discharge pump;
the III-effect forced circulation evaporator comprises a III-effect heating chamber, a III-effect separation chamber, a III-effect circulating pump and a III-effect discharge pump;
the IV-effect forced circulation evaporator comprises an IV-effect heating chamber, an IV-effect separation chamber, an IV-effect circulating pump and an IV-effect discharging pump;
the bottom of the first-effect separation chamber is connected with a first-effect circulating pump through a first-effect circulating pipe, and the first-effect circulating pump is connected with the bottom of the first-effect heating chamber; the lower part of the I-effect heating chamber is connected with the top of a primary condensation water tank, the top of the I-effect heating chamber is connected with the lower part of the I-effect separation chamber, the bottom outlet of the primary condensation water tank is connected with a primary preheater, and the primary preheater is respectively connected with an I-effect circulating pipe and a secondary preheater; the upper part of the first-effect heating chamber is provided with a raw steam inlet, and the inlet of the first-effect discharging pump is connected with a first-effect circulating pipe;
the top of the first-effect separation chamber is connected with the upper part of the second-effect heating chamber, the bottom of the second-effect separation chamber is connected with the inlet of the second-effect circulating pump through a second-effect circulating pipe, and the outlet of the second-effect circulating pump is connected with the bottom of the second-effect heating chamber; the top of the second-effect heating chamber is connected with the lower part of the second-effect separation chamber, the inlet of a second-effect discharge pump is connected with a second-effect circulating pipe, the outlet of the second-effect discharge pump is connected with a first-stage preheater, and a second-stage preheater is respectively connected with the second-effect circulating pipe and a third-stage preheater;
the top of the second-effect separation chamber is connected with the upper part of the third-effect heating chamber, the bottom of the third-effect separation chamber is connected with the inlet of the third-effect circulating pump through a third-effect circulating pipe, and the outlet of the third-effect circulating pump is connected with the bottom of the third-effect heating chamber; the top of the III-effect heating chamber is connected with the lower part of the III-effect separation chamber, the inlet of a III-effect discharge pump is connected with a III-effect circulating pipe, the outlet of the III-effect discharge pump is connected with a secondary preheater, a tertiary preheater is connected with the III-effect circulating pipe, and a condensed water outlet is arranged on the tertiary preheater;
the top of the III-effect separation chamber is connected with the upper part of the IV-effect heating chamber, the bottom of the IV-effect separation chamber is connected with the inlet of the IV-effect circulating pump through an IV-effect circulating pipe, and the outlet of the IV-effect circulating pump is connected with the bottom of the IV-effect heating chamber; the top of the IV-effect heating chamber is connected with the lower part of the IV-effect separation chamber, the inlet of an IV-effect discharge pump is connected with an IV-effect circulating pipe, and the outlet of the IV-effect discharge pump is connected with a tertiary preheater;
the top of the IV-effect separation chamber is connected with a surface condenser, and the lower part of the surface condenser is respectively connected with the top of a secondary condensate water tank and an inlet of a vacuum pump; the bottom of the surface condenser is provided with a circulating water upper water gap and a circulating water return port; a calcium chloride waste water inlet is arranged on the IV-effect circulating pipe;
the lower part of the IV-effect heating chamber is connected with the top of a secondary condensate water tank, and the bottom of the secondary condensate water tank is connected with a secondary condensate water pump.
2. The four-effect evaporation and concentration system according to claim 1, wherein the parts below the liquid level inside the inner walls of the I-effect separation chamber, the II-effect separation chamber, the III-effect separation chamber and the IV-effect separation chamber are polished.
3. The four-effect evaporation and concentration system according to claim 1, wherein the material contact parts of the I-effect heating chamber, the II-effect heating chamber, the III-effect heating chamber and the IV-effect heating chamber are all made of nonferrous materials, and the non-material contact parts are made of carbon steel materials.
4. The four-effect evaporation and concentration system according to claim 1, wherein the I-effect circulation pump, the II-effect circulation pump, the III-effect circulation pump and the IV-effect circulation pump are all horizontal axial flow pumps, wherein the material of the pump shell and the impeller of the I-effect circulation pump is TA9, the material of the pump shell and the impeller of the II-effect circulation pump is TA10, the material of the pump shell and the impeller of the III-effect circulation pump is TA2, and the material of the pump shell and the impeller of the IV-effect circulation pump is TA 2.
5. The four-effect evaporative concentration system according to claim 1, wherein the first effect discharge pump, the second effect discharge pump, the third effect discharge pump and the fourth effect discharge pump are centrifugal pumps, wherein the material of the pump casing and the impeller of the first effect discharge pump is TA9, the material of the pump casing and the impeller of the second effect discharge pump is TA10, the material of the pump casing and the impeller of the third effect discharge pump is TA2, and the material of the pump casing and the impeller of the fourth effect discharge pump is TA 2.
6. The four-effect evaporative concentration system according to claim 1, wherein the vacuum pump is a water ring vacuum pump and the secondary condensate pump is a centrifugal pump.
7. The four-effect evaporation and concentration system according to claim 1, wherein the primary condensate tank, the secondary condensate tank and the surface condenser are all made of carbon steel.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113476873A (en) * | 2021-07-29 | 2021-10-08 | 上海神农节能环保科技股份有限公司 | Multi-effect evaporator suitable for viscose fiber spinning scouring water concentration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113476873A (en) * | 2021-07-29 | 2021-10-08 | 上海神农节能环保科技股份有限公司 | Multi-effect evaporator suitable for viscose fiber spinning scouring water concentration |
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