CN108744706A - A kind of phosgene solution automatic filtering unit - Google Patents
A kind of phosgene solution automatic filtering unit Download PDFInfo
- Publication number
- CN108744706A CN108744706A CN201810587769.6A CN201810587769A CN108744706A CN 108744706 A CN108744706 A CN 108744706A CN 201810587769 A CN201810587769 A CN 201810587769A CN 108744706 A CN108744706 A CN 108744706A
- Authority
- CN
- China
- Prior art keywords
- connector
- phosgene
- filter
- deposition storehouse
- cake deposition
- 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
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 238000001914 filtration Methods 0.000 title claims abstract description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 94
- 239000007788 liquid Substances 0.000 claims abstract description 54
- 230000008021 deposition Effects 0.000 claims abstract description 50
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 48
- 238000000926 separation method Methods 0.000 claims abstract description 23
- 239000000706 filtrate Substances 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 239000002893 slag Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 abstract description 9
- 239000007787 solid Substances 0.000 abstract description 9
- 239000007789 gas Substances 0.000 abstract description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 231100000572 poisoning Toxicity 0.000 abstract description 4
- 230000000607 poisoning effect Effects 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 3
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 abstract description 3
- 239000007791 liquid phase Substances 0.000 abstract description 2
- 229920002635 polyurethane Polymers 0.000 abstract description 2
- 239000004814 polyurethane Substances 0.000 abstract description 2
- 238000000151 deposition Methods 0.000 description 35
- 238000000034 method Methods 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000009172 bursting Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of phosgene solution automatic filtering units in production of toluene diisocyanate technical field in polyurethane,When phosgene solution containing solid impurity passes through piping filter,Solid impurity more than filter screen aperture is blocked by filter screen,It is deposited in the cake deposition storehouse below piping filter,Effective protection phosgene solution pumps,Using high pressure nitrogen by cake deposition storehouse filter residue and filtrate be blown into slag-liquid separation tank,Nitrogen is continued with to press filtrate toward filtrate collecting tank,The phosgene being adsorbed on filter residue is displaced using hot nitrogen,After phosgene analyzer detects in slag-liquid separation tank without phosgene,Filter residue is discharged,Utilize the pure liquid phase of pump discharge,Empty the nitrogen in cake deposition storehouse,When preventing cake deposition storehouse from coming into operation again,Phosgene solution pump gas is caused to tie up,Compared with conventional filter manner of cleaning up,The present invention has on-line filtration,It is automatically separated and the advantages of zero leakage,Alleviate labour burden,Environmental pollution and personnel's poisoning are avoided simultaneously.
Description
Technical field
The present invention relates to production of toluene diisocyanate technical field in polyurethane, specific field be a kind of phosgene solution from
Dynamic filter device.
Background technology
The device of production toluene di-isocyanate(TDI) has using phosgene in the world at present, and phosgene solution is in the process of recycling
In, have the entrainment of some solid particle polluters in the solution, these solid impurities are mostly mechanical admixture, such as filler disintegrating slag, are glued
Spend small, hardness is big, it is necessary to which otherwise filtering removal can seriously damage pumping unit, the filter method used at present is adds in pump intake
Filter manually opens and inspect filter after filter residue accumulation to a certain extent, time-consuming and laborious, less efficient, and opens and inspect in the process easily
Cause phosgene to leak outside, causes the accidents such as environmental pollution and personnel's poisoning；
Production of toluene diisocyanate device at present has nitrogen preparation system, phosgene destroys system, safety relief system
System, phosgene in-line analyzer and phosgene solution accumulator tank, the present invention is based on above system operations.
Invention content
The purpose of the present invention is to provide a kind of phosgene solution automatic filtering units, to solve to propose in above-mentioned background technology
The problem of.
To achieve the above object, the present invention provides the following technical solutions：A kind of phosgene solution automatic filtering unit, including pipe
The bottom of road filter, the piping filter is equipped with filter screen fixing piece, and the filter screen fixing piece includes fixed ring, described
The madial wall of fixed ring is symmetrically held in the palm integrally formed with fixed, and the upper surface of the fixed ring is equipped with sealing ring, the sealing ring
Outside is uniformly provided with bolt hole, and the upper end of the filter screen fixing piece has been bolted filter screen, under the piping filter
End is connected with cake deposition storehouse, the outlet for the outlet, nitrogen heater that the cake deposition storehouse is pumped with phosgene solution respectively and slag
Liquid knockout drum is connected, and the slag-liquid separation tank is internally provided with upper layer intercept net and lower layer's filter screen, the slag-liquid separation tank
It is divided into tank and lower tank, the upper tank is equipped with safety relief pipeline connector, phosgene destroys system connector, phosgene analyzer
Interface and distance-transmission pressure gauge connector on connector, liquid level gauge, the lower tank is equipped with cake deposition storehouse connector, nitrogen heats
It the outer comb line connector of device connector, filtrate collecting tank connector, filter residue, liquid level gauge lower interface and opens and inspect with hand hole, the nitrogen
Hot-air heater connector is connected with the outlet of the nitrogen heater, between the cake deposition storehouse and the slag-liquid separation tank
Equipped with gas-liquid equilibrium pipe and pump U-tube is filled, the gas-liquid equilibrium pipe is connected with filling pump U-tube；
In the connecting pipe of the cake deposition storehouse and phosgene solution pump, the nitrogen heater connector and the nitrogen
The first automatic regulating valve and the second automatic regulating valve are respectively equipped in the connecting pipe of the outlet of heater；
In the connecting pipe in the piping filter and the cake deposition storehouse, the cake deposition storehouse and the nitrogen adds
In the connecting pipe of hot device, the phosgene destroys system connector, the phosgene analyzer connector, the filtrate collecting tank and connects
On the pipeline of the outer comb line connector of interface, the filter residue, fillings pump in U-tube, the cake deposition storehouse and the filter residue
Deposit storehouse connector connecting pipe on be respectively equipped with the first automatic switch valve, the second automatic switch valve, third automatic switch valve,
4th automatic switch valve, the 5th automatic switch valve, the 6th automatic switch valve, the 7th automatic switch valve and the 8th automatic switch valve；
The connecting pipe of the safety relief pipeline connector is equipped with rupture disk；
The connecting pipe of the cake deposition storehouse and the nitrogen heater is equipped with check (non-return) valve.
Preferably, the piping filter is T-shaped.
Preferably, the nitrogen heater uses electric heater or steam heater.
Preferably, the upper layer intercept net is circle, and lower layer's filter screen is ellipse, and ellipsoid is pressed from both sides with horizontal plane
Angle is 30 °~60 °.
Preferably, the terminal A and terminal B of the gas-liquid equilibrium pipe are in same level, the vertex for filling pump U-tube
The terminal B of C and gas-liquid equilibrium pipe is on same perpendicular.
Preferably, nitrogen enter the cake deposition storehouse pipeline on, on the gas-liquid equilibrium pipe, slag liquid mixture into
Enter on the pipeline of the slag-liquid separation tank and is respectively equipped with the first emergency manual stop valve, the second urgent hand on filter residue discharge tube
Dynamic stop valve, third emergency manual stop valve and the 4th emergency manual stop valve.
Preferably, a kind of phosgene solution automatic filtering unit, system use procedure auto-control.
Compared with prior art, the beneficial effects of the invention are as follows：A kind of phosgene solution automatic filtering unit, it is miscellaneous containing solid
When the phosgene solution of matter passes through piping filter, the solid impurity more than filter screen aperture is blocked by filter screen, is deposited on pipeline
In cake deposition storehouse below filter, effective protection phosgene solution pump closes the first automatic switch valve, by cake deposition storehouse
Detached with piping filter, using high pressure nitrogen by cake deposition storehouse filter residue and filtrate be blown into slag-liquid separation tank, continue profit
Filtrate is pressed toward filtrate collecting tank with nitrogen, the phosgene being adsorbed on filter residue is displaced using hot nitrogen, when phosgene analyzer is examined
After measuring in slag-liquid separation tank without phosgene, filter residue is discharged, using the pure liquid phase of pump discharge, the nitrogen in emptying cake deposition storehouse
Gas when preventing cake deposition storehouse from coming into operation again, causes phosgene solution pump gas to tie up, compared with conventional filter manner of cleaning up, this hair
It is bright to have the advantages that on-line filtration, be automatically separated and zero leakage, labour burden is alleviated, while avoiding environmental pollution and personnel
Poisoning.
Description of the drawings
Fig. 1 is the agent structure schematic diagram of the present invention；
Fig. 2 is the filter screen anchor structure schematic diagram of the present invention；
Fig. 3 is the slag-liquid separation tank sectional view of the present invention；
Fig. 4 is the control logic figure of procedure auto-control used by the system of the present invention.
In figure：1- piping filters, 2- filter screens fixing piece, 21- fixed rings, 22- fix support, 23- sealing rings, 24- spiral shells
Keyhole, 3- filter screens, 4- cake depositions storehouse, 5- phosgene solutions pump, 6- nitrogen heaters, 7- slag-liquid separations tank, the upper tanks of 71-,
711- safety relief pipelines connector, 712- phosgene destroy system connector, 713- phosgene analyzers connector, 714- liquid level gauges
Tank, 721- cake depositions storehouse connector, the connection of 722- nitrogen heaters under upper interface, 715- distance-transmission pressure gauges connector, 72-
Mouth, the outer comb line connector of 723- filtrate collecting tanks connector, 724- filter residues, 725- liquid level gauges lower interface, 726- are opened and inspect and are used hand
Hole, the upper layers 8- intercept net, 9- lower layers filter screen, 10- gas-liquid equilibriums pipe, 11- tanks pump U-tube, the first automatic regulating valves of 121-,
The second automatic regulating valves of 122-, the first automatic switch valves of 131-, the second automatic switch valves of 132-, 133- thirds automatic switch valve,
The 4th automatic switch valves of 134-, the 5th automatic switch valves of 135-, the 6th automatic switch valves of 136-, the 7th automatic switch valves of 137-,
The 8th automatic switch valves of 138-, 14- rupture disks, 15- check (non-return) valves, the first emergency manuals of 161- stop valve, the second urgent hands of 162-
Dynamic stop valve, 163- third emergency manuals stop valve, the 4th emergency manual stop valves of 164-.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
- 4 are please referred to Fig.1, the present invention provides a kind of technical solution：A kind of phosgene solution automatic filtering unit, including pipeline
The bottom of filter 1, the piping filter is equipped with filter screen fixing piece 2, and the filter screen fixing piece includes fixed ring 21, institute
The madial wall of fixed ring is stated symmetrically integrally formed with fixed support 22, the upper surface of the fixed ring is equipped with sealing ring 23, described close
Bolt hole 24 is uniformly provided on the outside of seal, the upper end of the filter screen fixing piece has been bolted filter screen 3, and the strainer is solid
Determine part for by the filter screen support in the piping filter, using bolt by the fixed ring and the piping filter
Lower end is connected, and the filter screen fixing piece is fixed on to the bottom of the piping filter, the fixed support is for holding
Filter screen is stated, the sealing ring makes phosgene solution and impurity be flowed out along the piping filter lower end, the piping filter
Lower end is connected with cake deposition storehouse 4, and the cake deposition storehouse pumps 5 outlet, the outlet of nitrogen heater 6 with phosgene solution respectively
It is connected with slag-liquid separation tank 7, the nitrogen heater is equipped with teletransmission thermometer, and the slag-liquid separation tank is internally provided with
Layer intercept net 8 and lower layer's filter screen 9, the slag-liquid separation tank are divided into tank 71 and lower tank 72, and the upper tank is equipped with safety and lets out
Pressure pipeline connector 711, phosgene destroy system connector 712, phosgene analyzer connector 713, interface 714 and remote on liquid level gauge
Pressure gauge connector 715 is passed, the lower tank 72 is equipped with cake deposition storehouse connector 721, nitrogen heater connector 722, filter
It the outer comb line connector 724 of liquid collecting tank connector 723, filter residue, liquid level gauge lower interface 725 and opens and inspect with hand hole 726, the nitrogen
Hot-air heater connector is connected with the outlet of the nitrogen heater, remaining connector is separately connected corresponding instrument and slot, institute
It states to be equipped with gas-liquid equilibrium pipe 10 between cake deposition storehouse and the slag-liquid separation tank and fill and pumps U-tube 11, the gas-liquid equilibrium pipe
It is connected with filling pump U-tube；
In the connecting pipe of the cake deposition storehouse and phosgene solution pump, the nitrogen heater connector and the nitrogen
The first automatic regulating valve 121 and the second automatic regulating valve 122 are respectively equipped in the connecting pipe of the outlet of heater；
In the connecting pipe in the piping filter and the cake deposition storehouse, the cake deposition storehouse and the nitrogen adds
In the connecting pipe of hot device, the phosgene destroys system connector, the phosgene analyzer connector, the filtrate collecting tank and connects
On the pipeline of the outer comb line connector of interface, the filter residue, fillings pump in U-tube, the cake deposition storehouse and the filter residue
It is automatic it to be respectively equipped with the first automatic switch valve 131, the second automatic switch valve 132, third in the connecting pipe of deposition storehouse connector
Switch valve 133, the 4th automatic switch valve 134, the 5th automatic switch valve 135, the 6th automatic switch valve 136, the 7th automatic switch
Valve 137 and the 8th automatic switch valve 138；
The connecting pipe of the safety relief pipeline connector is equipped with rupture disk 14；
The connecting pipe of the cake deposition storehouse and the nitrogen heater is equipped with check (non-return) valve 15.
Referring to Fig.1, all devices and pipe fitting have been separately connected, wherein phosgene solution pump intake pipeline pressure 0.2Mpa, light
Gasoloid pump discharge pipeline pressure 1.2Mpa, 35 DEG C of solution temperature, filter screen aperture are 30 mesh, and it is 30 that upper layer, which intercepts screen distance,
Mesh, lower layer's filter screen aperture are 30 mesh, and nitrogen pressure 0.6Mpa, nitrogen heater is using steam heating, bursting pressure of bursting sheet
0.8Mpa, 45 ° of lower layer's filter screen angle with horizontal plane, upper layer intercept net diameter 400mm, lower layer's filter screen long axis are 560mm, short
Axis is 395mm, slag-liquid separation tank internal diameter 400mm, height 1000mm.
Specifically, the piping filter is T-shaped.
Specifically, the nitrogen heater uses electric heater or steam heater.
Specifically, the upper layer intercept net is circle, lower layer's filter screen is oval, and ellipsoid and horizontal plane
Angle is 30 °~60 °.
Specifically, the terminal A and terminal B of the gas-liquid equilibrium pipe are in same level, it is described to fill the top for pumping U-tube
The terminal B of point C and gas-liquid equilibrium pipe is on same perpendicular, convenient for arranging gas in the cake deposition storehouse, ensures suitable press
Power.
Specifically, nitrogen enter the cake deposition storehouse pipeline on, on the gas-liquid equilibrium pipe, slag liquid mixture
On into the pipeline of the slag-liquid separation tank and it is respectively equipped with the first emergency manual stop valve 161, second on filter residue discharge tube
Emergency manual stop valve 162, third emergency manual stop valve 163 and the 4th emergency manual stop valve 164 are prevented because of automatic adjustment
Leakage or failure in valve and cause phosgene to leak outside.
Specifically, a kind of phosgene solution automatic filtering unit, system uses procedure auto-control.
Operation principle：Phosgene solution containing solid impurity is first into piping filter, when passing through filter screen,
Solid impurity more than filter screen aperture will be unable to pass through, and impurity is effectively prevent to enter in phosgene solution pump, open first certainly
After dynamic controlled valve, phosgene solution and impurity are fallen by the gravity of itself into cake deposition storehouse, close first certainly
Dynamic switch valve, you can cake deposition storehouse is detached with piping filter, utilizes high pressure nitrogen and the pure liquid of phosgene solution pump discharge
Mutually by cake deposition storehouse filter residue and filtrate be blown into slag-liquid separation tank, cake deposition storehouse can be put back into, to real
It is now not parking to open and inspect online, it continues with nitrogen and presses filtrate toward filtrate collecting tank, displaced using hot nitrogen and be adsorbed on filter residue
On phosgene filter residue is discharged after phosgene analyzer detects in slag-liquid separation tank without phosgene, utilize the pure liquid of pump discharge
Phase empties the nitrogen in cake deposition storehouse, when preventing cake deposition storehouse from coming into operation again, phosgene solution pump gas is caused to tie up, with tradition
Filter manner of cleaning up is compared, and the present invention has the advantages that on-line filtration, is automatically separated and zero leakage, alleviates labour burden,
Environmental pollution and personnel's poisoning are avoided simultaneously.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of phosgene solution automatic filtering unit, including piping filter (1), it is characterised in that：The piping filter (1)
Bottom be equipped with filter screen fixing piece (2), the filter screen fixing piece (2) includes fixed ring (21), the fixed ring (21)
Madial wall symmetrically holds in the palm (22) integrally formed with fixed, and the upper surface of the fixed ring (21) is equipped with sealing ring (23), the sealing
It is uniformly provided with bolt hole (24) on the outside of circle (23), the upper end of the filter screen fixing piece (2) has been bolted filter screen (3),
The lower end of the piping filter (1) is connected with cake deposition storehouse (4), and the cake deposition storehouse (4) pumps with phosgene solution respectively
(5) outlet of outlet, nitrogen heater (6) is connected with slag-liquid separation tank (7), and the nitrogen heater (6) is equipped with remote
Thermometer is passed, the slag-liquid separation tank (7) is internally provided with upper layer intercept net (8) and lower layer's filter screen (9), the slag-liquid separation
Tank (7) is divided into tank (71) and lower tank (72), and it is broken that the upper tank (71) is equipped with safety relief pipeline connector (711), phosgene
Bad system connector (712), phosgene analyzer connector (713), interface (714) and distance-transmission pressure gauge connector on liquid level gauge
(715), the lower tank (72) is equipped with cake deposition storehouse connector (721), nitrogen heater connector (722), filtrate collection
It slot connector (723), filter residue outer comb line connector (724), liquid level gauge lower interface (725) and opens and inspect with hand hole (726), it is described
Nitrogen heater connector (722) is connected with the outlet of the nitrogen heater (6), the cake deposition storehouse (4) and described
It is equipped with gas-liquid equilibrium pipe (10) between slag-liquid separation tank (7) and fills pump U-tube (11), the gas-liquid equilibrium pipe (10) and the filling
U-tube (11) is pumped to be connected；
In the connecting pipe of the cake deposition storehouse (4) and phosgene solution pump (5), the nitrogen heater connector (722) with
The first automatic regulating valve (121) and the second automatic adjustment are respectively equipped in the connecting pipe of the outlet of the nitrogen heater (6)
Valve (122)；
In the connecting pipe in the piping filter (1) and the cake deposition storehouse (4), the cake deposition storehouse (4) and described
In the connecting pipe of nitrogen heater (6), the phosgene destroy system connector (712), the phosgene analyzer connector
(713), the filtrate collecting tank connector (723), the outer comb line connector (724) of the filter residue pipeline on, fillings pump U
It is respectively equipped on type pipe (11), in the connecting pipe of the cake deposition storehouse (4) and cake deposition storehouse connector (721)
One automatic switch valve (131), the second automatic switch valve (132), third automatic switch valve (133), the 4th automatic switch valve
(134), the 5th automatic switch valve (135), the 6th automatic switch valve (136), the 7th automatic switch valve (137) and the 8th are opened automatically
Close valve (138)；
The connecting pipe of the safety relief pipeline connector (711) is equipped with rupture disk (14)；
The connecting pipe of the cake deposition storehouse (4) and the nitrogen heater (6) is equipped with check (non-return) valve (15).
2. a kind of phosgene solution automatic filtering unit according to claim 1, it is characterised in that：The piping filter
(1) T-shaped.
3. a kind of phosgene solution automatic filtering unit according to claim 1, it is characterised in that：The nitrogen heater
(6) electric heater or steam heater are used.
4. a kind of phosgene solution automatic filtering unit according to claim 1, it is characterised in that：The upper layer intercept net
(8) it is circle, lower layer's filter screen (9) is ellipse, and ellipsoid angle with horizontal plane is 30 °~60 °.
5. a kind of phosgene solution automatic filtering unit according to claim 1, it is characterised in that：The gas-liquid equilibrium pipe
(10) terminal A and terminal B is in same level, the end of the vertex C and gas-liquid equilibrium pipe (10) for filling pump U-tube (11)
Point B is on same perpendicular.
6. a kind of phosgene solution automatic filtering unit according to claim 1, it is characterised in that：The cake deposition storehouse
(4) on pipeline, on the gas-liquid equilibrium pipe (10), slag liquid mixture enter the slag-liquid separation tank (7) pipeline on and filter
It is urgent that the first emergency manual stop valve (161), the second emergency manual stop valve (162), third are respectively equipped on slag discharge tube
Hand off valve (163) and the 4th emergency manual stop valve (164).
7. a kind of phosgene solution automatic filtering unit according to claim 1, it is characterised in that：Its system uses program certainly
Dynamic control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810587769.6A CN108744706A (en) | 2018-06-08 | 2018-06-08 | A kind of phosgene solution automatic filtering unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810587769.6A CN108744706A (en) | 2018-06-08 | 2018-06-08 | A kind of phosgene solution automatic filtering unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108744706A true CN108744706A (en) | 2018-11-06 |
Family
ID=64000752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810587769.6A Pending CN108744706A (en) | 2018-06-08 | 2018-06-08 | A kind of phosgene solution automatic filtering unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN108744706A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3997531A (en) * | 1973-09-29 | 1976-12-14 | Basf Aktiengesellschaft | 2,1,3-Benzothiadiazin-(4)-one-2,2-dioxides |
| CN101698652A (en) * | 2009-11-05 | 2010-04-28 | 甘肃银达化工有限公司 | Method for purifying cyclic solvent in producing TDI |
| CN101870457A (en) * | 2010-06-29 | 2010-10-27 | 蓝星化工有限责任公司 | Method for purifying by-product hydrogen chloride gas of TDI |
| CN104109106A (en) * | 2014-05-29 | 2014-10-22 | 安徽东至广信农化有限公司 | Phosgenation product reaction rectification method |
| CN107635636A (en) * | 2015-04-20 | 2018-01-26 | 科思创有限公司 | Technique for the continuous inline filtering of process stream |
| CN107857716A (en) * | 2017-11-29 | 2018-03-30 | 开封华瑞化工新材料股份有限公司 | The hot light process and reaction liquid processing device of synthesizing isocyanate class product |
-
2018
- 2018-06-08 CN CN201810587769.6A patent/CN108744706A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3997531A (en) * | 1973-09-29 | 1976-12-14 | Basf Aktiengesellschaft | 2,1,3-Benzothiadiazin-(4)-one-2,2-dioxides |
| CN101698652A (en) * | 2009-11-05 | 2010-04-28 | 甘肃银达化工有限公司 | Method for purifying cyclic solvent in producing TDI |
| CN101870457A (en) * | 2010-06-29 | 2010-10-27 | 蓝星化工有限责任公司 | Method for purifying by-product hydrogen chloride gas of TDI |
| CN104109106A (en) * | 2014-05-29 | 2014-10-22 | 安徽东至广信农化有限公司 | Phosgenation product reaction rectification method |
| CN107635636A (en) * | 2015-04-20 | 2018-01-26 | 科思创有限公司 | Technique for the continuous inline filtering of process stream |
| CN107857716A (en) * | 2017-11-29 | 2018-03-30 | 开封华瑞化工新材料股份有限公司 | The hot light process and reaction liquid processing device of synthesizing isocyanate class product |
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Application publication date: 20181106 |