CN208345958U - A kind of desalter of mother liquor containing hydrazine in PVC production process - Google Patents
A kind of desalter of mother liquor containing hydrazine in PVC production process Download PDFInfo
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- CN208345958U CN208345958U CN201820496562.3U CN201820496562U CN208345958U CN 208345958 U CN208345958 U CN 208345958U CN 201820496562 U CN201820496562 U CN 201820496562U CN 208345958 U CN208345958 U CN 208345958U
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Abstract
A kind of desalter of mother liquor containing hydrazine in PVC production process, mother liquor after hydrochloric acid delivery pipe and hydrazine-containing water evaporation process connects centrifuge mother liquor tank entrance, the outlet of centrifuge mother liquor tank connects preheater by centrifuge mother liquor pump, preheater passes through an effect forced circulation pump, one effect heater connects 1st effective evaporator, the outlet at bottom of 1st effective evaporator passes through one effect cyclone hydraulic separators of an effect transfering material pump connection, the underflow outlet of one effect cyclone hydraulic separators passes through two effect forced circulation pumps, two effect heaters connect 2nd effect evaporator, the outlet at bottom of 2nd effect evaporator passes through two effect transfering material pump connections, two effect cyclone hydraulic separators, the underflow outlet of two effect cyclone hydraulic separators passes through triple effect forced circulation pump, triple effect heater connects triple effect evaporator, the outlet at bottom of triple effect evaporator connects triple effect spin liquid separator entrance, the underflow outlet of triple effect cyclone hydraulic separators connects centrifuge entrance, The solid outlet of centrifuge connects sodium chloride recycling can, and centrifuge mother liquor outlet connects centrifuge mother liquor tank entrance, and the utility model can substantially reduce the salt content of the mother liquor containing hydrazine.
Description
Technical field
The utility model belongs to chemical equipment technical field, in particular to a kind of desalination of mother liquor containing hydrazine in PVC production process
Device.
Background technique
Currently, the processing approach of hydrazine-containing water is: initially entering an effect falling film evaporator and be concentrated by evaporation sodium chloride, later
The concentration of sodium chloride is evaporated to hypersaturated state into forced-circulation evaporator, by supersaturated solution squeeze into centrifuge into
Row separation, to obtain sodium chloride crystal, the mother liquor of generation is delivered to chemical oxidation system except remaining hydrazine by elevator pump.
However, still containing a large amount of salt in mother liquor after concentrate, but since alkali content excessively high (5.7%) can not continue cycling through
From salt, handled so directly returning to chemical oxidation system；In the prior art, device goes out salt amount and there was only 3-3.5t/d, with reason
Differ larger by salt amount (10.5t/d) out；Design requirement (20m is not achieved in processing capacity3/ h), hydrazine-containing water about 10-12m3/ h,
If fully entering vapo(u)rization system, cause evaporative concn low, salt can not be separated.
Summary of the invention
In order to overcome the disadvantages of the above prior art, the purpose of this utility model is to provide a kind of in PVC production process
The desalter of mother liquor containing hydrazine can substantially reduce the salt content of the mother liquor containing hydrazine using triple effect evaporation.
To achieve the goals above, the technical solution adopted in the utility model is:
A kind of desalter of mother liquor containing hydrazine in PVC production process, which is characterized in that including centrifuge mother liquor tank 1, hydrazine-containing water
Mother liquor after evaporation process connects 1 entrance of centrifuge mother liquor tank, and 1 entrance of centrifuge mother liquor tank is also connected with hydrochloric acid delivery pipe, and centrifugation is female
The outlet of flow container 1 connects the entrance of preheater 3 by centrifuge mother liquor pump 2, and the outlet of preheater 3 is connect by an effect forced circulation pump 4
The outlet of the entrance of one effect heater 5, an effect heater 5 connects the entrance of 1st effective evaporator 6, the outlet at bottom of 1st effective evaporator 6
By the entrance of one effect cyclone hydraulic separators 8 of effect transfering material pump 7 connection, the underflow outlet of an effect cyclone hydraulic separators 8 is strong by two effects
Circulating pump 9 processed connects the entrance of two effect heaters 10, and the outlet of two effect heaters 10 connects the entrance of 2nd effect evaporator 11, two effect evaporations
Entrance of the outlet at bottom of device 11 by two effect transfering material pump 12 connections, two effect cyclone hydraulic separators 13, the bottom of two effect cyclone hydraulic separators 13
Outflux connects the entrance of triple effect heater 15 by triple effect forced circulation pump 14, and the outlet of triple effect heater 15 connects triple effect evaporator
16 entrance, the outlet at bottom of triple effect evaporator 16 connect the entrance of triple effect cyclone hydraulic separators 18, triple effect rotation by mashing pump 17
The entrance of the underflow outlet connection centrifuge 19 of liquid/gas separator 18, the solid outlet of centrifuge 19 connect sodium chloride recycling can, are centrifuged
Mother liquor outlet connects the entrance of centrifuge mother liquor tank 1.
Device is used as heat source using steam, heat source of the generation secondary steam of 1st effective evaporator 6 as 2nd effect evaporator 11, and two
Imitate heat source of the secondary steam of the generation of evaporator 11 as triple effect evaporator 16.
The lower part outlet of the 1st effective evaporator 6 connects the entrance of an effect forced circulation pump 4, and the lower part of 2nd effect evaporator 11 goes out
Mouth connects the entrance of two effect forced circulation pumps 9, and the lower part outlet of triple effect evaporator 16 connects the entrance of triple effect forced circulation pump 14.
The condensate outlet of the one effect heater 5 connects two effect heaters 10, and the condensate outlet of two effect heaters 10 connects
Triple effect heater 15, the condensate outlet of triple effect heater 15 connect the entrance of condensate drum 20, and the outlet of condensate drum 20 passes through
Flushing pump 21 connects 1st effective evaporator 6,2nd effect evaporator 11 and triple effect evaporator 16 and provides rinse water for it.
Compared with prior art, using the utility model thickening plus triple effect mixing evaporation technique, by this part, water steams
After hair, its interior salt is precipitated, then carries out centrifugal dehydration, mean salt amount drops to 2g/L from 300g/L, reaches reuse condition.
The vapor being evaporated is dried by reuse after condensation, dense saline solution by centrifuge, goes salt dissolving or as salt-mud treatment.
Detailed description of the invention
Fig. 1 is the utility model structure diagram.
Specific embodiment
The embodiments of the present invention is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of desalter of mother liquor containing hydrazine in PVC production process, including centrifuge mother liquor tank 1, hydrazine-containing water
Mother liquor after evaporation process connects 1 entrance of centrifuge mother liquor tank, and 1 entrance of centrifuge mother liquor tank is also connected with hydrochloric acid delivery pipe, and centrifugation is female
The outlet of flow container 1 connects the entrance of preheater 3 by centrifuge mother liquor pump 2, and the outlet of preheater 3 is connect by an effect forced circulation pump 4
The outlet of the entrance of one effect heater 5, an effect heater 5 connects the entrance of 1st effective evaporator 6, the outlet at bottom of 1st effective evaporator 6
By the entrance of one effect cyclone hydraulic separators 8 of effect transfering material pump 7 connection, the underflow outlet of an effect cyclone hydraulic separators 8 is strong by two effects
Circulating pump 9 processed connects the entrance of two effect heaters 10, and the outlet of two effect heaters 10 connects the entrance of 2nd effect evaporator 11, two effect evaporations
Entrance of the outlet at bottom of device 11 by two effect transfering material pump 12 connections, two effect cyclone hydraulic separators 13, the bottom of two effect cyclone hydraulic separators 13
Outflux connects the entrance of triple effect heater 15 by triple effect forced circulation pump 14, and the outlet of triple effect heater 15 connects triple effect evaporator
16 entrance, the outlet at bottom of triple effect evaporator 16 connect the entrance of triple effect cyclone hydraulic separators 18, triple effect rotation by mashing pump 17
The entrance of the underflow outlet connection centrifuge 19 of liquid/gas separator 18, the solid outlet of centrifuge 19 connect sodium chloride recycling can, are centrifuged
Mother liquor outlet connects the entrance of centrifuge mother liquor tank 1.
The lower part outlet of 1st effective evaporator 6 connects the entrance of an effect forced circulation pump 4, and the lower part outlet of 2nd effect evaporator 11 connects
The entrance of two effect forced circulation pumps 9, the lower part outlet of triple effect evaporator 16 connects the entrance of triple effect forced circulation pump 14, to realize
Further circulating and evaporating.
The condensate outlet of one effect heater 5 connects two effect heaters 10, and the condensate outlet of two effect heaters 10 connects triple effect
Heater 15, the condensate outlet of triple effect heater 15 connect the entrance of condensate drum 20, and the outlet of condensate drum 20 passes through flushing
Pump 21 connects 1st effective evaporator 6,2nd effect evaporator 11 and triple effect evaporator 16 and provides rinse water for it.
According to the above structure, the course of work and principle of the utility model are as follows:
Hydrazine-containing water enters the centrifuge mother liquor tank 1 of battery limit (BL) by the mother liquor after preamble evaporation process, adds hydrochloric acid tune pH into
Property, an effect heater 5, which is sent into, through an effect forced circulation pump 4 after being preheated with the preheated device 3 of centrifuge mother liquor pump 2 arrives 1st effective evaporator again
6, device is used as heat source using 0.8MPa steam, heat source of the generation secondary steam of 1st effective evaporator 6 as 2nd effect evaporator 11, and two
Imitate heat source of the secondary steam of the generation of evaporator 11 as triple effect evaporator 16.
Raw material waste water pass through 1st effective evaporator 6 after through one effect transfering material pump 7 be sent into one effect cyclone hydraulic separators 8, after through two effect
Forced circulation pump 9, two imitates heater 10 and enters the evaporation of 2nd effect evaporator 11.The waste water of 2nd effect evaporator 11 is through two effect transfering material pumps 12
Be sent into two effect cyclone hydraulic separators 13, after through triple effect forced circulation pump 14, triple effect heater 15 enter triple effect evaporator 16 continue
Evaporation.
Sodium chloride in triple effect evaporator 16 is concentrated into supersaturation and crystallizes, and send through mashing pump 17 to triple effect cyclone hydraulic separators
18, centrifuge 19 obtains solid sodium chloride recycling after being centrifugated, and centrifuge mother liquor, which returns to centrifuge mother liquor tank 1, to be continued to evaporate.
It is 6 ton/hours by design hydrazine-containing water amount, the mean salt of mother liquor containing hydrazine can be made after the newly-increased desalter of mother liquor containing hydrazine
Amount drops to 2g/L from 300g/L, and design treatment amount is 8.9M3/ h brine waste, actual treatment amount are 6M3/ h brine waste.Often
Year can save recycle-water 52560m3, it is per ton to press 0.35 yuan of calculating, 1.84 ten thousand yuan can be saved every year.
In actually construction, equipment that the utility model may be used, material (containing corrosion-resistant thermal insulation) are as shown in table 1.
1 equipment of table, material (containing corrosion-resistant thermal insulation) detail list
The electrical, instrument that the utility model may be used is as shown in table 2.
Table 2 is electrical, instrument detail list
Claims (4)
- A kind of desalter of mother liquor containing hydrazine in 1.PVC production process, which is characterized in that including centrifuge mother liquor tank (1), hydrazine-containing water Mother liquor after evaporation process connects centrifuge mother liquor tank (1) entrance, and centrifuge mother liquor tank (1) entrance is also connected with hydrochloric acid delivery pipe, from The outlet of heart mother liquor tank (1) connects the entrance of preheater (3) by centrifuge mother liquor pump (2), and the outlet of preheater (3) is strong by an effect Circulating pump (4) processed connects the entrance of an effect heater (5), and the outlet of effect heater (5) connects the entrance of 1st effective evaporator (6), and one The outlet at bottom for imitating evaporator (6) passes through the entrance of one effect cyclone hydraulic separators (8) of effect transfering material pump (7) connection, an effect spinning liquid point Underflow outlet from device (8) connects the entrance of two effect heaters (10) by two effects forced circulation pump (9), two effects heater (10) Outlet connects the entrance of 2nd effect evaporator (11), and the outlet at bottom of 2nd effect evaporator (11) passes through two effect transfering material pump (12) connections, two effect The underflow outlet of the entrance of cyclone hydraulic separators (13), two effects cyclone hydraulic separators (13) connects triple effect by triple effect forced circulation pump (14) The entrance of heater (15), the outlet of triple effect heater (15) connect the entrance of triple effect evaporator (16), triple effect evaporator (16) Entrance of the outlet at bottom by mashing pump (17) connection triple effect cyclone hydraulic separators (18), the bottom outflow of triple effect cyclone hydraulic separators (18) The entrance of mouth connection centrifuge (19), the solid outlet of centrifuge (19) connect sodium chloride recycling can, and centrifuge mother liquor outlet connects centrifugation The entrance of mother liquor tank (1).
- 2. a kind of desalter of mother liquor containing hydrazine in PVC production process according to claim 1, which is characterized in that use steam As heat source, 1st effective evaporator (6) generates heat source of the secondary steam as 2nd effect evaporator (11), and 2nd effect evaporator (11) generates Heat source of the secondary steam as triple effect evaporator (16).
- 3. a kind of desalter of mother liquor containing hydrazine in PVC production process according to claim 1, which is characterized in that an effect The lower part outlet of evaporator (6) connects the entrance of an effect forced circulation pump (4), and it is strong that the lower part outlet of 2nd effect evaporator (11) connects two effects The lower part outlet of the entrance of circulating pump (9) processed, triple effect evaporator (16) connects the entrance of triple effect forced circulation pump (14).
- 4. a kind of desalter of mother liquor containing hydrazine in PVC production process according to claim 1, which is characterized in that an effect The condensate outlet of heater (5) connects two effect heaters (10), and the condensate outlet of two effects heater (10) connects triple effect heater (15), the condensate outlet of triple effect heater (15) connects the entrance of condensate drum (20), and the outlet of condensate drum (20) passes through punching It washes pump (21) and connects 1st effective evaporator (6), 2nd effect evaporator (11) and triple effect evaporator (16) and provide rinse water for it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820496562.3U CN208345958U (en) | 2018-04-09 | 2018-04-09 | A kind of desalter of mother liquor containing hydrazine in PVC production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820496562.3U CN208345958U (en) | 2018-04-09 | 2018-04-09 | A kind of desalter of mother liquor containing hydrazine in PVC production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208345958U true CN208345958U (en) | 2019-01-08 |
Family
ID=64885860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820496562.3U Active CN208345958U (en) | 2018-04-09 | 2018-04-09 | A kind of desalter of mother liquor containing hydrazine in PVC production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208345958U (en) |
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2018
- 2018-04-09 CN CN201820496562.3U patent/CN208345958U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190919 Address after: 810000 No. 111 Liming Road, Qiaotou Town, Datong County, Xining City, Qinghai Province Patentee after: Qinghai Liming Chemical Co., Ltd. Address before: 810100 Xintianbao Village, Changning Town, Datong County, Xining City, Qinghai Province Patentee before: Qinghai Yihua Chemical Co., Ltd. |