CN218011159U - Energy-saving p-toluenesulfonic acid synthesis system - Google Patents
Energy-saving p-toluenesulfonic acid synthesis system Download PDFInfo
- Publication number
- CN218011159U CN218011159U CN202222217060.1U CN202222217060U CN218011159U CN 218011159 U CN218011159 U CN 218011159U CN 202222217060 U CN202222217060 U CN 202222217060U CN 218011159 U CN218011159 U CN 218011159U
- Authority
- CN
- China
- Prior art keywords
- communicated
- condensing
- box
- pipe
- condensation
- 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.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The utility model relates to the technical field of chemical production equipment, and discloses an energy-saving p-toluenesulfonic acid synthesis system, which comprises a reactor for generating a target product through reaction; a feeding hole of the condensing equipment is communicated with a discharging hole of the reactor through a pipeline; the water distributor comprises a water distributor, a feed inlet of the water distributor is communicated with a discharge port of the condensing equipment through a pipeline, and a conveying device, wherein a feed inlet of the conveying device is communicated with a discharge port of the water distributor through a pipeline. This energy-saving p-toluenesulfonic acid synthesis system carries toluene to condensing equipment's condenser box through conveying equipment, and the partly heat energy of high-temperature gas release in the condensing equipment condenser pipe gets into the toluene in the condenser box, and this kind of operation mode can reduce the cooling burden of recirculated cooling water in the condenser box on the one hand, and on the other hand can also heat the toluene that needs flow back to in the reactor, kills two birds with one stone, has reduced the waste of heat energy.
Description
Technical Field
The utility model relates to a chemical production equipment technical field specifically is an energy-saving p-toluenesulfonic acid synthesis system.
Background
The development of chemical industry, the market demand for p-toluenesulfonic acid is getting bigger and bigger, the energy consumption is overlarge in the actual production process of p-toluenesulfonic acid, the phenomenon of energy waste is more serious, the existing production conditions still need to be improved, and the specific embodiment is as follows:
at present, concentrated sulfuric acid and toluene are used as raw materials for producing p-toluenesulfonic acid, the concentrated sulfuric acid and the toluene react at a certain temperature to generate p-toluenesulfonic acid and water, excessive toluene and the toluene and water are used for azeotropy, the water generated by the reaction is taken out from a reactor, the reaction progress of materials is further accelerated, the yield of target products is improved, and the reaction is stopped even reverse reaction can occur if the concentration of sulfuric acid is reduced due to untimely removal of water.
The principle of the existing equipment water removal is that toluene and water are vaporized by heating, gas enters a condenser, the gas is cooled into liquid through cooling water in a condenser shell pass and is collected in a water separator, the toluene and the water with lower temperature are layered in the water separator, the cold toluene continuously participates in reaction and gasification water carrying in a reaction kettle in an upper layer through an overflow port, the process is repeated until the reaction is finished, the cooled toluene directly flows back into the reaction kettle, a large amount of heat energy waste exists in the process, meanwhile, a large amount of cooling circulating water is needed when the toluene and the water enter the condenser for cooling through heating vaporized gas, and the cooling burden of the cooling circulating water is increased in the process.
SUMMERY OF THE UTILITY MODEL
The utility model provides an energy-saving p-toluenesulfonic acid synthesis system has reduced toluene reflux reation kettle's heat energy waste on the one hand, and on the other hand has also reduced cooling circulation water's cooling burden, has promoted to have solved the problem mentioned among the above-mentioned background art.
The utility model provides a following technical scheme: an energy-saving p-toluenesulfonic acid synthesis system comprises a reactor for generating a target product through reaction;
the feed inlet of the condensing equipment is communicated with the discharge outlet of the reactor through a pipeline;
a feed inlet of the water separator is communicated with a discharge outlet of the condensing equipment through a pipeline,
the feeding hole of the conveying equipment is communicated with the discharging hole of the water separator through a pipeline, the discharging hole of the conveying equipment is communicated with the condensing box of the condensing equipment through a pipeline, and the condensing box is communicated with the feeding hole of the reactor through a pipeline.
As an alternative of the energy-saving p-toluenesulfonic acid synthesis system of the present invention, wherein: the condensing equipment comprises a main condensing box, a secondary condensing box and a condensing pipe which penetrates through the main condensing box and the secondary condensing box;
one end of the condensation pipe is communicated with a discharge hole of the reactor, and the other end of the condensation pipe is communicated with a feed hole of the water separator;
the main condensing box is provided with a first liquid inlet pipe for inputting cooling liquid and a first liquid outlet pipe for outputting the cooling liquid;
and a third liquid inlet pipe for inputting toluene liquid and a third liquid outlet pipe for outputting toluene liquid are arranged on the secondary condenser tank.
As an alternative of the energy-saving p-toluenesulfonic acid synthesis system of the present invention, wherein: baffle plates are arranged in the main condensing box in a staggered manner;
the baffle plate divides the inner space of the main condensation box into a first condensation chamber, a second condensation chamber and a third condensation chamber, and the first condensation chamber, the second condensation chamber and the third condensation chamber are communicated with each other to form an S-shaped flowing channel;
the first liquid inlet pipe is communicated with the first condensation cavity, and the third condensation cavity is communicated with the first liquid outlet pipe.
As an alternative of the energy-saving p-toluenesulfonic acid synthesis system of the present invention, wherein: the height of the feed inlet of the condensing pipe is higher than that of the discharge outlet of the condensing pipe.
As an alternative of the energy-saving p-toluenesulfonic acid synthesis system of the present invention, wherein: an output box is arranged on the main condensing box, and an inlet box is arranged on the secondary condensing box;
one end of the condensing pipe is communicated with the inlet box, and a feed inlet of the condensing equipment is arranged on the inlet box;
the other end and the delivery box intercommunication of condenser pipe, condensing equipment's discharge gate sets up on the delivery box.
As an alternative of the energy-saving p-toluenesulfonic acid synthesis system of the present invention, wherein: the conveying equipment is a turbine pump, a feed inlet of the turbine pump is communicated with a discharge outlet of the water separator through a pipeline, and the discharge outlet of the turbine pump is communicated with the third liquid inlet pipe through a pipeline.
As an alternative of the energy-saving p-toluenesulfonic acid synthesis system of the present invention, wherein: the conveying equipment is a magnetic pump, a feed inlet of the magnetic pump is communicated with a discharge outlet of the water separator through a pipeline, and a discharge outlet of the magnetic pump is communicated with the third liquid inlet pipe through a pipeline.
As an alternative of the energy-saving p-toluenesulfonic acid synthesis system of the present invention, wherein: and the third liquid outlet pipe is communicated with the feed inlet of the reactor through a one-way valve.
As an alternative of the energy-saving p-toluenesulfonic acid synthesis system of the present invention, wherein: the space in the secondary condensation tank is smaller than the space in the primary condensation tank.
The utility model discloses possess following beneficial effect:
1. this energy-saving p-toluenesulfonic acid synthesis system carries toluene to condensing equipment's condenser box through conveying equipment, and the partly heat energy of high-temperature gas release in the condensing equipment condenser pipe gets into the toluene in the condenser box, and this kind of operation mode can reduce the cooling burden of recirculated cooling water in the condenser box on the one hand, and on the other hand can also heat the toluene that needs flow back to in the reactor, kills two birds with one stone, has reduced the waste of heat energy.
2. This energy-saving p-toluenesulfonic acid synthesis system sets up the baffling board through crisscross to the inner space at main condensing box forms the passageway of flowing through of S type, so that the inside each position of main condensing box of flowing through of coolant liquid more comprehensive is favorable to absorbing the heat in the condenser pipe, is convenient for the liquefaction of the interior material of condenser pipe.
3. This energy-saving p-toluenesulfonic acid synthesis system, the feed inlet height of condenser pipe is higher than its discharge gate height, and when the azeotropic mixture gas entering condenser pipe liquefaction of reactor, these liquid can flow to the water knockout drum in under the action of gravity, avoid liquid to store and cause the jam in the condenser pipe.
4. This energy-saving p-toluenesulfonic acid synthesis system, the utility model discloses the application is very strong in the technology that needs forced reflux reaction, and energy-conserving effect is showing, and the reheating of toluene also improves reaction rate simultaneously, and the input cost is low, and the effect is showing, and whole equipment passes through pipeline interconnect, and whole leakproofness is good, does not have secondary pollution.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural diagram of a condensation device in embodiment 2 of the present invention.
Fig. 3 is a schematic structural diagram of a condensation device in embodiment 3 of the present invention.
In the figure: 1. the system comprises a reactor, 2, condensing equipment, 21, an output box, 22, a main condensing box, 221, a first condensing chamber, 222, a second condensing chamber, 223, a third condensing chamber, 23, an inlet box, 24, a secondary condensing box, 25, a first liquid outlet pipe, 26, a first liquid inlet pipe, 27, a third liquid inlet pipe, 28, a third liquid outlet pipe, 29, a baffle plate, 3, a water separator, 4, conveying equipment, 5, a one-way valve, 6 and a condensing pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1, an energy-saving p-toluenesulfonic acid synthesis system comprises,
a reactor 1 for reacting to produce a target product; the reactor 1 can be a reaction kettle, and is used for containing concentrated sulfuric acid and toluene, heating a mixture of the concentrated sulfuric acid and the toluene to react to generate p-toluenesulfonic acid and water, and taking out the water generated by the reaction from the reactor 1 by utilizing azeotropic vaporization of the toluene and the water.
A feeding hole of the condensing device 2 is communicated with a discharging hole of the reactor 1 through a pipeline; the toluene and water are vaporized in an azeotropic way, the water generated in the reaction is taken out from the reactor 1 and enters a condensing device 2 for condensation, and a mixed liquid of the toluene and the water is formed after condensation.
And a feed inlet of the water separator 3 is communicated with a discharge outlet of the condensing equipment 2 through a pipeline, and the mixed liquid of the toluene and the water is conveyed into the water separator 3 to separate the toluene in the mixed liquid.
Conveying equipment 4, conveying equipment 4's feed inlet with the discharge gate of water knockout drum 3 passes through the pipeline intercommunication, conveying equipment 4's discharge gate with condensing equipment 2's condensing box passes through the pipeline intercommunication, the condensing box with the feed inlet of reactor 1 passes through the pipeline intercommunication.
Carry toluene to condensing equipment 2's condenser box through conveying equipment 4, the mixed steam that needs to absorb cold volume in condensing equipment 2's condenser pipe 6 can release some heat energy and get into the toluene in the condenser box, and this kind of operation mode can reduce the cooling burden of recirculated cooling water in the condenser box on the one hand, and on the other hand can also heat the toluene that needs flow back to in reactor 1, kills two birds with one stone, has reduced the waste of heat energy.
Example 2
Referring to fig. 1-2, this embodiment is further described with reference to embodiment 1, and specifically, the condensing apparatus 2 includes a main condensing box 22, a secondary condensing box 24, and a condensing pipe 6 penetrating through the main condensing box 22 and the secondary condensing box 24; the space in the secondary condensation tank 24 is smaller than the space in the primary condensation tank 22.
One end of the condensation pipe 6 is communicated with a discharge hole of the reactor 1, and the other end of the condensation pipe 6 is communicated with a feed inlet of the water separator 3;
a first liquid inlet pipe 26 for inputting cooling liquid and a first liquid outlet pipe 25 for outputting cooling liquid are arranged on the main condensation box 22; in this embodiment, the cooling liquid may be water for absorbing the heat of the azeotropic mixture gas in the reactor 1;
the secondary condenser 24 is provided with a third inlet pipe 27 for inputting toluene liquid and a third outlet pipe 28 for outputting toluene liquid.
It should be noted that a third liquid inlet pipe 27 is communicated with the discharge port of the conveying device 4 through a pipeline, and the third liquid outlet pipe 28 is communicated with the feed port of the reactor 1 through a pipeline;
the specific working principle of this embodiment is as follows: the azeotropic mixed gas in the reactor 1 enters the condenser pipe 6 through a pipeline, when the azeotropic mixed gas passes through the secondary condenser box 24, the toluene in the secondary condenser box 24 can be heated by the azeotropic mixed gas, meanwhile, the toluene is partially liquefied, the heated toluene is conveyed by the conveying equipment 4 to flow back to the reactor 1 to continue to react, the partially liquefied azeotropic mixed gas continues to move, when the partially liquefied azeotropic mixed gas passes through the main condenser box 22, the toluene and water mixed liquid is completely liquefied to form, the liquid finally flows into the water separator 3 through the pipeline to be layered, the toluene in the mixed liquid is extracted, the toluene is conveyed into the secondary condenser box 24 through the conveying equipment 4 to be heated, and finally the toluene flows back to the reactor 1.
Other contents of this embodiment are the same as embodiment 1, and are not described herein again.
Example 3
Referring to fig. 1 and 3, the present embodiment is a further improvement of embodiment 2, specifically, baffles 29 are staggered in the main condensation tank 22;
the baffle 29 divides the inner space of the main condensation tank 22 into a first condensation chamber 221, a second condensation chamber 222 and a third condensation chamber 223, and the first condensation chamber 221, the second condensation chamber 222 and the third condensation chamber 223 are communicated with each other to form an S-shaped flow passage;
the first liquid inlet pipe 26 is communicated with the first condensation chamber 221, and the third condensation chamber 223 is communicated with the first liquid outlet pipe 25.
It should be noted that, by arranging the baffle plates 29 in a staggered manner and forming an S-shaped flow passage in the internal space of the main condensation box 22, the cooling liquid can flow through all positions inside the main condensation box 22 more completely, which is beneficial to absorbing heat in the condensation pipe 6 and liquefying substances in the condensation pipe 6.
Optionally, the condensation pipe 6 is disposed in an inclined manner, or may be disposed vertically, and it should be noted that the height of the feeding port of the condensation pipe 6 is higher than the height of the discharging port of the condensation pipe 6, in this embodiment, the condensation pipe 6 is disposed in an inclined manner.
Through setting up the slope of condenser pipe 6, and the feed inlet height of condenser pipe 6 is higher than its discharge gate height, when the azeotropic mixture gas entering condenser pipe 6 liquefaction of reactor 1, these liquid can flow to water knockout drum 3 in under the action of gravity, avoid liquid to store and cause the jam in condenser pipe 6.
Further, an output box 21 is installed on the main condensation box 22, and an inlet box 23 is installed on the secondary condensation box 24;
one end of the condensing pipe 6 is communicated with the inlet box 23, and a feed inlet of the condensing equipment 2 is arranged on the inlet box 23;
the other end of the condensation pipe 6 is communicated with an output box 21, and a discharge hole of the condensation device 2 is arranged on the output box 21.
In the actual production process, the number of condenser pipe 6 has a plurality ofly, and a plurality of condenser pipe 6 sets up side by side, through setting up inlet box 23 and delivery box 21 to the material can get into each condenser pipe 6 simultaneously through inlet box 23, and the condensate liquid in the condenser pipe 6 of also being convenient for flows back to delivery box 21 and discharges in addition.
Other contents of this embodiment are the same as embodiment 1, and are not described herein again.
It should be particularly described in embodiment 3 that the conveying device 4 may be a turbine pump, a feed inlet of the turbine pump is communicated with a discharge outlet of the water separator 3 through a pipeline, and a discharge outlet of the turbine pump is communicated with the third liquid inlet pipe 27 through a pipeline.
Alternatively, the conveying device 4 may also be a magnetic pump, a feed inlet of the magnetic pump is communicated with a discharge outlet of the water separator 3 through a pipeline, and a discharge outlet of the magnetic pump is communicated with the third liquid inlet pipe 27 through a pipeline.
It should be further explained that the third liquid outlet pipe 28 is communicated with the feeding hole of the reactor 1 through the one-way valve 5, specifically, the third liquid outlet pipe 28 is communicated with the feeding hole of the one-way valve 5 through a pipeline, and the discharging hole of the one-way valve 5 is communicated with the feeding hole of the reactor 1 through a pipeline.
The check valve 5 can prevent the azeotropic mixture gas in the reactor 1 from entering the secondary condensation tank 24 through the third liquid outlet pipe 28.
The utility model discloses the application is very strong in the technology that needs forced reflux reaction, and energy-conserving effect is showing, and the reheating of toluene also improves reaction rate simultaneously, and the input cost is low, and the effect is showing, and the complete equipment passes through pipeline interconnect, and whole leakproofness is good, does not have secondary pollution.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. An energy-saving p-toluenesulfonic acid synthesis system is characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
a reactor (1) for reacting to form a target product;
the feeding hole of the condensing equipment (2) is communicated with the discharging hole of the reactor (1) through a pipeline;
a feed inlet of the water separator (3) is communicated with a discharge outlet of the condensing equipment (2) through a pipeline,
the reactor comprises a conveying device (4), wherein a feed inlet of the conveying device (4) is communicated with a discharge outlet of the water distributor (3) through a pipeline, a discharge outlet of the conveying device (4) is communicated with a condensing box of the condensing device (2) through a pipeline, and the condensing box is communicated with a feed inlet of the reactor (1) through a pipeline.
2. The energy-saving p-toluenesulfonic acid synthesis system of claim 1, wherein: the condensing equipment (2) comprises a main condensing tank (22), a secondary condensing tank (24) and a condensing pipe (6) penetrating through the main condensing tank (22) and the secondary condensing tank (24);
one end of the condensation pipe (6) is communicated with a discharge hole of the reactor (1), and the other end of the condensation pipe (6) is communicated with a feed hole of the water separator (3);
a first liquid inlet pipe (26) for inputting cooling liquid and a first liquid outlet pipe (25) for outputting the cooling liquid are arranged on the main condensation box (22);
and a third liquid inlet pipe (27) for inputting toluene liquid and a third liquid outlet pipe (28) for outputting toluene liquid are arranged on the secondary condensation tank (24).
3. The energy-saving p-toluenesulfonic acid synthesis system of claim 2, wherein: baffles (29) are arranged in the main condensation box (22) in a staggered manner;
the baffle plate (29) divides the inner space of the main condensation box (22) into a first condensation chamber (221), a second condensation chamber (222) and a third condensation chamber (223), and the first condensation chamber (221), the second condensation chamber (222) and the third condensation chamber (223) are communicated with each other to form an S-shaped flowing channel;
the first liquid inlet pipe (26) is communicated with the first condensation chamber (221), and the third condensation chamber (223) is communicated with the first liquid outlet pipe (25).
4. The energy-saving p-toluenesulfonic acid synthesis system of claim 3, wherein: the height of the feed inlet of the condensing pipe (6) is higher than that of the discharge outlet of the condensing pipe (6).
5. The energy-saving p-toluenesulfonic acid synthesis system of claim 4, wherein: an output box (21) is arranged on the main condensation box (22), and an inlet box (23) is arranged on the secondary condensation box (24);
one end of the condensing pipe (6) is communicated with the inlet box (23), and a feed inlet of the condensing equipment (2) is formed in the inlet box (23);
the other end of the condensing pipe (6) is communicated with the output box (21), and a discharge hole of the condensing equipment (2) is formed in the output box (21).
6. The energy-saving p-toluenesulfonic acid synthesis system of claim 5, wherein: the conveying equipment (4) is a turbine pump, a feed inlet of the turbine pump is communicated with a discharge outlet of the water separator (3) through a pipeline, and the discharge outlet of the turbine pump is communicated with the third liquid inlet pipe (27) through a pipeline.
7. The energy-saving p-toluenesulfonic acid synthesis system of claim 5, wherein: conveying equipment (4) are magnetic drive pump, the feed inlet of magnetic drive pump passes through the discharge gate intercommunication of pipeline with water knockout drum (3), the discharge gate of magnetic drive pump passes through the pipeline and communicates with third inlet tube (27).
8. The energy-saving p-toluenesulfonic acid synthesis system of claim 6, wherein: and the third liquid outlet pipe (28) is communicated with the feed inlet of the reactor (1) through a one-way valve (5).
9. The energy-saving p-toluenesulfonic acid synthesis system of claim 8, wherein: the space in the secondary condensation tank (24) is smaller than the space in the primary condensation tank (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222217060.1U CN218011159U (en) | 2022-08-23 | 2022-08-23 | Energy-saving p-toluenesulfonic acid synthesis system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222217060.1U CN218011159U (en) | 2022-08-23 | 2022-08-23 | Energy-saving p-toluenesulfonic acid synthesis system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218011159U true CN218011159U (en) | 2022-12-13 |
Family
ID=84350236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222217060.1U Active CN218011159U (en) | 2022-08-23 | 2022-08-23 | Energy-saving p-toluenesulfonic acid synthesis system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218011159U (en) |
-
2022
- 2022-08-23 CN CN202222217060.1U patent/CN218011159U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101935077B (en) | Waste acid concentration multistage treatment method | |
| CN103449699B (en) | Device and method for realizing continuous pyrohydrolysis treatment of organic material | |
| CN102766021B (en) | Production system and production method for continuously producing ethanol by ethyl acetate through using hydrogenation | |
| CN101875863B (en) | Waste heat-driven circulative heat-carrying gas methanation technology and device | |
| CN109438251A (en) | A kind of methanol vapor phase catalytic ammoniation method prepares the method and device thereof of trimethylamine | |
| CN218011159U (en) | Energy-saving p-toluenesulfonic acid synthesis system | |
| CN104058932A (en) | Production system and method for producing ethyl alcohol through adding of hydrogen in methyl acetate | |
| CN105884586A (en) | Method for co-production of sodium methoxide through methanol gas phase dehydration dimethyl ether manufacturing device and device thereof | |
| CN107098854B (en) | Ethoxyquinoline continuous production method | |
| CN101274784B (en) | Steam-water four-stage separating five-effect water distillator | |
| CN106802090A (en) | A kind of rotary kiln cement clinker production line waste heat recycling system | |
| CN108330001B (en) | A kind of serialization glycerine esterification deacidification device | |
| CN103288593B (en) | Device and method for producing sodium methoxide through recompression of mechanical steam | |
| CN117654092A (en) | Energy-saving p-toluenesulfonic acid synthesis system | |
| CN201670808U (en) | Energy saving device using low-temperature waste water to vaporize propylene depolymerized oil column feedstock in a step way | |
| CN213202997U (en) | White spirit production distillation plant | |
| CN203474491U (en) | Heat recycling device of high-temperature and high-pressure waste water | |
| CN101792679B (en) | Energy-saving method for vaporizing feed of propylene depolymerization oil tower by stepped utilization of low-temperature wastewater and device thereof | |
| CN202752008U (en) | Gas phase hydrogenation reactor | |
| CN113248460A (en) | Method and equipment for preparing ethylene oxide from high-concentration chloroethanol | |
| CN113091338A (en) | Reaction heat recycling system in formaldehyde production | |
| CN220478124U (en) | Reboiler of rectifying tower | |
| CN219308694U (en) | Phosphorus trichloride production system | |
| CN115581933A (en) | Furfural production system and process with ultralow steam consumption | |
| CN210963956U (en) | Evaporator for NVP continuous crystallization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |