Factory layout structure for 1, 3-propylene glycol production

Abstract

The invention discloses a plant layout structure for 1, 3-propylene glycol production, and relates to the technical field of plant layout, and the plant layout structure comprises an administrative region, a public facility region, a fire-fighting facility region, a 1, 3-propylene glycol production region and a storage tank warehouse region; the 1, 3-propylene glycol production area comprises a central control room, a compressor room, a hydration workshop, a hydrogenation workshop, a refining workshop, a purified water workshop and a byproduct treatment workshop; a hydration reaction kettle, a distillation tower, a light component rectifying tower and a heavy component rectifying tower are arranged in the hydration workshop. According to the invention, the position of each area in the factory is set based on the wind rose diagram, so that the pollution influence is reduced; by arranging the fire-fighting facility area, the safety and the fire-fighting response timeliness are improved; by arranging the pipe gallery, the gas-liquid transportation convenience is improved; by arranging the internal structure of the hydration workshop, the recovery precision and the utilization rate of acrolein are improved, and the productivity of final 1, 3-propylene glycol is improved.

Description

Technical Field

[0001] The present application relates to the technical field of plant layout, and in particular to a plant layout structure for the production of 1,3-propylene glycol. Background Art

[0002] 1,3-propylene glycol is an important raw material for the production of PTT fiber and is irreplaceable. With the continuous advancement of the technology for the production of 1,3-propylene glycol and the continuous improvement of efficiency, its large-scale application prospects are very optimistic and have great economic and social benefits. However, in the process of producing 1,3-propylene glycol, pollutants such as waste gas and waste liquid will be generated, and waste gas pollution will also be generated when the storage tank leaks. Waste gas pollution will affect the health of people in crowded places in the production plant; at the same time, the initial raw material processing, product synthesis, product storage and transportation involve flammable and explosive substances such as acrolein, hydrogen, and acetaldehyde, which may explode under certain conditions, posing a threat to the safety of life and property in the plant; in addition, the production of 1,3-propylene glycol involves the transportation of raw materials, products, waste gas, waste liquid, and other gases and liquids. Therefore, when designing the layout structure of the plant, it is necessary to consider waste gas pollution, explosion risks, and gas and liquid transportation.

[0003] In the prior art, Chinese patent CN115745740A discloses a method and a device for producing 1,3-propylene glycol, comprising the following steps: subjecting propylene to a selective oxidation reaction under the action of a catalyst to obtain a first product system comprising acrolein and acrylic acid; subjecting the first product system to a hydration reaction under the action of a hydration catalyst to obtain a second product system comprising 3-hydroxypropionaldehyde and 3-hydroxypropionic acid; separating the second product system to obtain 3-hydroxypropionaldehyde and 3-hydroxypropionic acid, respectively; subjecting 3-hydroxypropionic acid to an esterification reaction to obtain 3-hydroxypropionic ester; mixing 3-hydroxypropionic ester with 3-hydroxypropionic aldehyde, and subjecting the mixed system to a catalytic hydrogenation reaction to obtain a third product system comprising 1,3-propylene glycol and an alcohol compound; and separating the third product system to obtain 1,3-propylene glycol.

[0004] However, the above-mentioned prior art only considers the production method and equipment of 1,3-propylene glycol, and does not study the waste gas pollution, explosion risk and gas-liquid transportation in the plant layout structure design. The 1,3-propylene glycol production area and the tank warehouse area have a greater impact on the pollution of crowded places, the safety of the plant and the timeliness of fire response are poor, and the gas-liquid transportation is not convenient enough. In addition, the above-mentioned prior art has low recovery accuracy and utilization rate of acrolein, and ultimately the productivity of 1,3-propylene glycol is low. Summary of the invention

[0005] The present application provides a plant layout structure for 1,3-propylene glycol production, which is used to solve the problems in the prior art that the 1,3-propylene glycol production area and the storage tank warehouse area have a high pollution impact on crowded places, the safety of the plant and the timeliness of fire response are poor, the gas and liquid transportation are not convenient enough, the recovery accuracy and utilization rate of acrolein are low, and ultimately the productivity of 1,3-propylene glycol is low.

[0006] On the one hand, the present application provides a plant layout structure for 1,3-propylene glycol production, including: an administrative area, a public utility area, a fire protection facility area, a 1,3-propylene glycol production area, and a tank warehouse area.

[0007] The locations of the administrative area, the public facilities area, the fire protection facilities area, the 1,3-propylene glycol production area and the tank warehouse area are set based on the wind rose diagram.

[0008] A pipe gallery is arranged between the public utility area, the 1,3-propylene glycol production area, and the tank warehouse area.

[0009] The 1,3-propylene glycol production area includes: a central control room, a compressor room, a hydration workshop, a hydrogenation workshop, a refining workshop, a purified water workshop and a by-product processing workshop.

[0010] The compressor room, the hydration workshop, the hydrogenation workshop, the refining workshop, the purified water workshop and the by-product processing workshop are all constructed along the pipeline corridor.

[0011] The hydration workshop is provided with a hydration reaction kettle, a distillation tower, a light component distillation tower and a heavy component distillation tower.

[0012] The outlet of the hydration reactor is connected to the inlet of the distillation tower; the bottom of the distillation tower is connected to a 3-hydroxypropionaldehyde storage tank, and the top outlet of the distillation tower is connected to the inlet of the light component distillation tower; the top of the light component distillation tower is connected to a light component storage tank, and the bottom of the light component distillation tower is connected to the inlet of the heavy component distillation tower; the bottom of the heavy component distillation tower is connected to a heavy component storage tank, and the top of the heavy component distillation tower is connected to an acrolein recovery tank, and the acrolein recovery tank is connected to the inlet of the hydration reactor.

[0013] In a possible implementation, a hydrogenation reactor, a nano aeration tube and a temperature controller are provided inside the hydrogenation workshop.

[0014] The outlets of the 3-hydroxypropanal storage tank and the nano aeration tube are both connected to the inlet of the hydrogenation reactor, and the temperature controller is thermally connected to the hydrogenation reactor.

[0015] In a possible implementation, the administrative area is located on the leeward side of the factory area's wind direction with the lowest frequency throughout the year.

[0016] The public facilities area and the fire protection facilities area are respectively located on two adjacent sides of the administrative area.

[0017] The 1,3-propylene glycol production area is located in the center of the plant area and is on the leeward side of the administrative area and the public utility area with the highest frequency wind direction throughout the year.

[0018] The tank warehouse area is located on the leeward side of the factory area's highest frequency wind direction throughout the year.

[0019] The administrative area, the public utility area, the fire-fighting facility area, the 1,3-propylene glycol production area, and the tank warehouse area are separated by roads.

[0020] In a possible implementation, the administrative area includes: an administrative building, a parking lot, and a changing room.

[0021] The administrative building is adjacent to the main entrance of the factory.

[0022] The parking lot and the changing room are adjacent to each other, and are both adjacent to the administrative building.

[0023] In a possible implementation, the utility area includes: an experimental sub-area and a public sub-area.

[0024] The experimental sub-area includes: a machine repair room, a power distribution room, and a laboratory building.

[0025] The public sub-area includes: an air compression station, a circulating water station, a power station, a refrigeration station, and a public engineering transfer station.

[0026] The experimental sub-area is separated from the public sub-area by a road.

[0027] The machine repair room and the power distribution room are adjacent to each other, and are both adjacent to the laboratory building.

[0028] The air compression station, the circulating water station, the power station, the refrigeration station, and the public engineering transfer station are adjacent to each other.

[0029] The circulating water station and the public utility transfer station are both close to the 1,3-propylene glycol production area.

[0030] The circulating water station and the air compressor station are both constructed along the pipeline corridor.

[0031] In one possible implementation, the fire protection facility area includes: an initial rainwater pool, an accident wastewater pool, a fire protection pool and a fire station.

[0032] The initial rainwater pool, the accident wastewater pool, the fire water pool, and the fire station are adjacent to each other.

[0033] The fire water pool and the fire station are both close to the 1,3-propylene glycol production area and the storage tank warehouse area.

[0034] In a possible implementation, the storage tank warehouse area includes: a storage tank sub-area and a warehouse sub-area.

[0035] The storage tank sub-area includes: an acrolein storage tank, a purified water storage tank, a chilled water storage tank, a hydrogen storage tank, a waste gas storage tank, a waste liquid storage tank and a 1,3-propylene glycol storage tank.

[0036] The warehouse sub-area includes: a warehouse and a loading and unloading area.

[0037] The storage tank sub-area is separated from the warehouse sub-area by a road.

[0038] The acrolein storage tank, the purified water storage tank, the chilled water storage tank, the hydrogen storage tank, the waste gas storage tank, the waste liquid storage tank, and the 1,3-propylene glycol storage tank are all constructed along the pipeline corridor.

[0039] The warehouse and the loading and unloading area are adjacent to each other.

[0040] In a possible implementation, a lightning rod is provided inside the storage tank sub-area, and a ring-shaped fire-fighting road is provided outside.

[0041] A fire barrier is arranged outside the storage tanks in the storage tank sub-area.

[0042] In a possible implementation, the plant layout structure also includes: reserved development land.

[0043] The reserved development land is set inside or outside the factory area.

[0044] In a possible implementation, an acrolein pipeline, a first purified water pipeline, a first chilled water pipeline, a hydrogen pipeline, a waste gas pipeline, a waste liquid pipeline and a first 1,3-propylene glycol pipeline are arranged in the pipeline corridor between the storage tank warehouse area and the 1,3-propylene glycol production area.

[0045] A circulating water pipeline and a second chilled water pipeline are arranged in the pipe gallery between the public utility area and the 1,3-propylene glycol production area.

[0046] In the 1,3-propylene glycol production area, a second purified water pipeline is arranged in the pipe gallery between the purified water workshop and the hydration workshop; a 3-hydroxypropanal pipeline is arranged in the pipe gallery between the hydration workshop and the hydrogenation workshop; a light component pipeline and a heavy component pipeline are arranged in the pipe gallery between the hydration workshop and the by-product processing workshop; a high-pressure hydrogen pipeline is arranged in the pipe gallery between the compressor room and the hydrogenation workshop; a second 1,3-propylene glycol pipeline is arranged in the pipe gallery between the hydrogenation workshop and the refining workshop; and an aldehyde impurity pipeline is arranged in the pipe gallery between the refining workshop and the by-product processing workshop.

[0047] A separation area is provided in the pipe gallery, and the hydrogen pipeline, the high-pressure hydrogen pipeline, the first 1,3-propylene glycol pipeline, and the second 1,3-propylene glycol pipeline are respectively located in different separation areas.

[0048] In a possible implementation, the first purified water pipeline, the first chilled water pipeline, the circulating water pipeline, the second chilled water pipeline, and the second purified water pipeline are all made of PVC pipes.

[0049] The hydrogen pipeline, the first 1,3-propylene glycol pipeline, the 3-hydroxypropanal pipeline, the high-pressure hydrogen pipeline, and the second 1,3-propylene glycol pipeline are all made of stainless steel pipes.

[0050] The waste gas pipeline, the waste liquid pipeline, the light component pipeline, the heavy component pipeline, the aldehyde impurity pipeline are all made of stainless steel pipes with anti-corrosion coating.

[0051] A plant layout structure for 1,3-propylene glycol production in this application has the following advantages:

[0052] By setting the positions of various areas within the factory based on the wind rose diagram, the pollution impact of the 1,3-propylene glycol production area and the tank warehouse area on the administrative area and public facility area where people are densely populated is reduced; by setting up the fire protection facility area and locating the fire protection facility area within the factory, the safety and timeliness of fire response are improved; by setting up the pipeline corridor, the convenience of gas and liquid transportation is improved; by setting up the internal structure of the hydration workshop, especially the hydration reactor, distillation tower, light component distillation tower and heavy component distillation tower, the recovery accuracy and utilization rate of acrolein, as well as the final productivity of 1,3-propylene glycol are improved.

[0053] The proposed hydrogenation workshop is internally provided with a hydrogenation reactor, a nano aeration tube and a temperature controller. The arrangement of the nano aeration tube increases the contact area between hydrogen and 3-hydroxypropionaldehyde, thereby increasing the degree and efficiency of the hydrogenation reaction.

[0054] The proposed circulating water station and utility transfer station are both close to the 1,3-propylene glycol production area, which is convenient for providing circulating water and utility materials, thereby facilitating production.

[0055] The proposed fire water pools and fire stations are close to the 1,3-propylene glycol production area and tank warehouse area, which is convenient for emergency water supply during firefighting, and fire trucks can quickly reach the fire area from the fire station.

[0056] The proposed storage tank sub-area is provided with a lightning rod inside and a ring fire road outside, and a firebreak is provided outside the storage tanks in the storage tank sub-area, thereby reducing the risk of fire.

[0057] The proposed reserved development land improves the flexibility and scalability of the plant layout.

[0058] The proposed pipeline corridor is provided with separation areas, and the hydrogen pipeline, the high-pressure hydrogen pipeline, the first 1,3-propylene glycol pipeline, and the second 1,3-propylene glycol pipeline are respectively located in different separation areas, thereby avoiding potential safety risks and life and economic losses.

[0059] By setting the materials of various pipes in the pipe gallery to match the corresponding gas and liquid materials and pressures, the service life of the pipes in the pipe gallery is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0061] Figure 1 A schematic diagram of a plant layout structure for the production of 1,3-propylene glycol provided in an embodiment of the present application;

[0062] Figure 2 A schematic diagram of the layout structure of the 1,3-propylene glycol production area provided in the embodiment of the present application;

[0063] Figure 3 A schematic diagram of the internal structure of a hydration workshop provided in an embodiment of the present application;

[0064] Figure 4 A schematic diagram of the internal structure of a hydrogenation plant provided in an embodiment of the present application;

[0065] Figure 5 A schematic diagram of the layout structure of the common sub-area provided in the embodiment of the present application;

[0066] Figure 6A schematic diagram of the layout structure of the storage tank sub-area provided in an embodiment of the present application. DETAILED DESCRIPTION

[0067] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0068] like Figures 1 to 3 As shown, an embodiment of the present application provides a plant layout structure for 1,3-propylene glycol production, including: an administrative area, a public facilities area, a fire protection facilities area, a 1,3-propylene glycol production area and a tank warehouse area.

[0069] The locations of the administrative area, the public facilities area, the fire protection facilities area, the 1,3-propylene glycol production area and the tank warehouse area are set based on the wind rose diagram.

[0070] A pipe gallery is arranged between the public utility area, the 1,3-propylene glycol production area, and the tank warehouse area.

[0071] The 1,3-propylene glycol production area includes: a central control room, a compressor room, a hydration workshop, a hydrogenation workshop, a refining workshop, a purified water workshop and a by-product processing workshop.

[0072] The compressor room, the hydration workshop, the hydrogenation workshop, the refining workshop, the purified water workshop and the by-product processing workshop are all constructed along the pipeline corridor.

[0073] Specifically, in this embodiment, the hydration workshop is located in the northwest of the 1,3-propylene glycol production area, the hydrogenation workshop is on the south side of the hydration workshop, the purified water workshop and the refining workshop are on the south side of the hydrogenation workshop, the purified water workshop is on the west side of the refining workshop, the compressor room is located in the northeast of the 1,3-propylene glycol production area, the by-product treatment workshop is on the south side of the compressor room, the central control room is on the south side of the by-product treatment workshop and on the east side of the refining workshop, and the distance between the central control room and the by-product treatment workshop and the refining workshop meets the safety requirements, and the central control room is adjacent to the refining workshop and the by-product treatment workshop, which improves the production management efficiency and safety management level.

[0074] Specifically, the compressor room is used to provide the high-pressure hydrogen required in the production process of 1,3-propylene glycol; the hydration workshop is used to carry out the hydration reaction of acrolein to obtain 3-hydroxypropanal; the hydrogenation workshop is used to carry out hydrogenation reaction on the 3-hydroxypropanal obtained in the hydration workshop to obtain 1,3-propylene glycol; the refining workshop is used to further purify and refine the 1,3-propylene glycol obtained in the hydrogenation workshop; the purified water workshop is used to provide the purified water required in the preparation process; the by-product treatment workshop is used to treat the by-products and wastes generated in the preparation process; the central control room is used to monitor and control the compressor room, hydration workshop, hydrogenation workshop, refining workshop, purified water workshop and by-product treatment workshop.

[0075] The hydration workshop is provided with a hydration reaction kettle, a distillation tower, a light component distillation tower and a heavy component distillation tower.

[0076] The outlet of the hydration reactor is connected to the inlet of the distillation tower; the bottom of the distillation tower is connected to a 3-hydroxypropionaldehyde storage tank, and the top outlet of the distillation tower is connected to the inlet of the light component distillation tower; the top of the light component distillation tower is connected to a light component storage tank, and the bottom of the light component distillation tower is connected to the inlet of the heavy component distillation tower; the bottom of the heavy component distillation tower is connected to a heavy component storage tank, and the top of the heavy component distillation tower is connected to an acrolein recovery tank, and the acrolein recovery tank is connected to the inlet of the hydration reactor.

[0077] Specifically, in the present embodiment, the hydration reactor is used to carry out the hydration reaction of acrolein to obtain a hydration liquid; the distillation tower is used to perform preliminary distillation on the hydration liquid to separate the hydration liquid into 3-hydroxypropionaldehyde liquid and a first impurity gas, the 3-hydroxypropionaldehyde liquid enters the 3-hydroxypropionaldehyde storage tank from the bottom of the distillation tower, and the first impurity gas enters the light component distillation tower from the top of the distillation tower; the light component distillation tower is used to condense the first impurity gas and then perform a second distillation to obtain a light component and a first impurity liquid, the light component enters the light component storage tank from the top of the light component distillation tower after condensation, and the first impurity liquid enters the heavy component distillation tower from the bottom of the light component distillation tower; the heavy component distillation tower is used to perform a third distillation on the first impurity liquid to obtain a heavy component and acrolein gas, the heavy component enters the heavy component storage tank from the bottom of the heavy component distillation tower, and the acrolein gas enters the acrolein recovery tank from the top of the heavy component distillation tower after condensation. By setting up a hydration reactor, a distillation tower, a light component distillation tower and a heavy component distillation tower, the recovery accuracy and utilization rate of acrolein are improved, thereby improving the productivity of 3-hydroxypropanal and the final productivity of 1,3-propylene glycol.

[0078] In this embodiment, the light component includes acetaldehyde and propionaldehyde, the heavy component includes acetone, the light component storage tank and the heavy component storage tank are both connected to the by-product processing workshop, and the 3-hydroxypropionaldehyde storage tank is connected to the hydrogenation workshop.

[0079] Specifically, in this embodiment, the compressor room is provided with compressor equipment, pressure controller, air leakage sensor and ventilation device. The compressor equipment is used to pressurize the hydrogen delivered from the hydrogen storage tank in the tank warehouse area and deliver it to the hydrogenation workshop; the pressure controller is used to control the pressurization parameters of the compressor equipment; the air leakage sensor is used to monitor whether there is air leakage in the compressor equipment and the pipeline for delivering hydrogen, and alarm when air leakage is detected; the ventilation device is used to ensure the air circulation inside the compressor room; in this embodiment, the walls, doors and windows of the compressor room are equipped with sound insulation materials to reduce the noise generated when the compressor equipment is running.

[0080] Specifically, in this embodiment, a filter and a distillation tower are arranged inside the refining workshop, and the outlet of the hydrogenation reactor of the hydrogenation workshop is connected to the inlet of the filter, and the outlet of the filter is connected to the inlet of the distillation tower. The filter is used to preliminarily filter the 1,3-propylene glycol crude product obtained from the hydrogenation reactor to obtain a first purified liquid; the distillation tower is used to separate and purify the first purified liquid to obtain a 1,3-propylene glycol final product and residual aldehyde impurities, wherein the 1,3-propylene glycol final product is transported to a 1,3-propylene glycol storage tank for storage, and the residual aldehyde impurities are transported to a by-product processing workshop.

[0081] Specifically, in this embodiment, the by-product processing workshop collects and processes the by-products obtained from the hydration workshop and the refining workshop, and transports the treated waste gas and waste liquid to the waste gas storage tank and the waste liquid storage tank for storage.

[0082] Specifically, in this embodiment, the purified water workshop transports purified water to the hydration workshop, hydrogenation workshop, refining workshop and by-product processing workshop respectively, for cleaning, condensation, dilution, etc. in the reaction process or processing process of the above workshops.

[0083] In other possible embodiments, the 1,3-propylene glycol production area may be configured with other internal layouts according to actual conditions.

[0084] like Figure 4 As described, exemplarily, the interior of the hydrogenation workshop is provided with a hydrogenation reactor, a nano aeration tube and a temperature controller.

[0085] The outlets of the 3-hydroxypropanal storage tank and the nano aeration tube are both connected to the inlet of the hydrogenation reactor, and the temperature controller is thermally connected to the hydrogenation reactor.

[0086] Specifically, in this embodiment, the nano-aeration tube is used to pass hydrogen into the hydrogenation reactor in the form of nano-scale hydrogen bubbles, and the nano-scale hydrogen bubbles and 3-hydroxypropanal undergo hydrogenation reaction in the hydrogenation reactor to generate a crude 1,3-propylene glycol product. The arrangement of the nano-aeration tube increases the contact area between hydrogen and 3-hydroxypropanal, thereby increasing the degree and efficiency of the hydrogenation reaction.

[0087] Exemplarily, the administrative area is located on the leeward side of the factory area's minimum frequency wind direction throughout the year.

[0088] The public facilities area and the fire protection facilities area are respectively located on two adjacent sides of the administrative area.

[0089] The 1,3-propylene glycol production area is located in the center of the plant area and is on the leeward side of the administrative area and the public utility area with the highest frequency wind direction throughout the year.

[0090] The tank warehouse area is located on the leeward side of the factory area's highest frequency wind direction throughout the year.

[0091] The administrative area, the public utility area, the fire-fighting facility area, the 1,3-propylene glycol production area, and the tank warehouse area are separated by roads.

[0092] Specifically, in this embodiment, taking the wind rose diagram of a construction land in a factory area in Yulin City as an example, the maximum frequency wind direction of the location throughout the year is northwest wind, and the minimum frequency wind direction throughout the year is southeast wind. Therefore, in this embodiment, the administrative area is located in the northwest corner of the factory area, the public facilities area and the fire protection facilities area are located on the south and east sides of the administrative area respectively, the 1,3-propylene glycol production area is located in the center of the factory area and on the southeast side of the administrative area, and on the east side of the public facilities area, and the tank warehouse area is located on the east side of the factory area.

[0093] It should be understood that due to the different sizes and shapes of various areas within the factory, and the overall shape and space utilization of the factory must also be considered, there will be certain orientation deviations when actually setting the positions of various areas. For example, the 1,3-propylene glycol production area in this embodiment is located on the east side of the public facilities area rather than the southeast side, and the tank warehouse area is located on the east side of the factory rather than the southeast side. When the orientation deviation is not large, the layout of the factory is neat and compact.

[0094] In other possible embodiments, the administrative area, public facilities area, fire protection facilities area, 1,3-propylene glycol production area and tank warehouse area may be arranged as other plant layout structures that meet the requirements according to actual conditions.

[0095] In this embodiment, the factory area is provided with six exits, including the north side of the administrative area (North Gate 1), the north side of the road between the fire protection facility area and the storage tank warehouse area (North Gate 2), the west side of the administrative area (West Gate 1), the west side of the public facilities area (West Gate 2), the east side of the storage tank warehouse area (East Gate), and the southwest side of the storage tank warehouse area (South Gate). In other possible embodiments, the factory area can also be provided with other numbers and locations of exits to adapt to the actual factory layout structure.

[0096] Exemplarily, the administrative area includes: an administrative building, a parking lot, and a changing room.

[0097] The administrative building is adjacent to the main entrance of the factory.

[0098] The parking lot and the changing room are adjacent to each other, and are both adjacent to the administrative building.

[0099] Specifically, in this embodiment, the administrative building is located in the north of the administrative area, the parking lot and the changing rooms are both located on the south side of the administrative building, and the parking lot is located on the west side of the changing rooms.

[0100] In other possible embodiments, the administrative area may be set to other internal layouts according to actual conditions.

[0101] Exemplarily, the utility area includes: an experimental sub-area and a public sub-area.

[0102] The experimental sub-area includes: a machine repair room, a power distribution room, and a laboratory building.

[0103] like Figure 5 As shown, the public sub-area includes: an air compression station, a circulating water station, a power station, a refrigeration station, and a public engineering transfer station.

[0104] The experimental sub-area is separated from the public sub-area by a road.

[0105] The machine repair room and the power distribution room are adjacent to each other, and are both adjacent to the laboratory building.

[0106] The air compression station, the circulating water station, the power station, the refrigeration station, and the public engineering transfer station are adjacent to each other.

[0107] The circulating water station and the public utility transfer station are both close to the 1,3-propylene glycol production area.

[0108] The circulating water station and the air compressor station are both constructed along the pipeline corridor.

[0109] Specifically, the air compressor station is used to provide compressed air for the 1,3-propylene glycol production area, the refrigeration station is used to provide chilled water and refrigerant for the 1,3-propylene glycol production area, the power station is used to provide power energy, the circulating water station is used to provide circulating water for the 1,3-propylene glycol production area, and the public engineering transfer station is used to provide transfer services for the air compressor station, circulating water station, power station and refrigeration station.

[0110] Specifically, in this embodiment, the experimental sub-area is located in the north of the public utility area, the machine repair room and the power distribution room are both located in the north of the experimental sub-area, the machine repair room is on the west side of the power distribution room, and the laboratory building is located in the south of the experimental sub-area. The public sub-area is located in the south of the public utility area, the air compressor station and the circulating water station are both located in the north of the public sub-area, the air compressor station is on the west side of the circulating water station, the power station and the refrigeration station are both on the south side of the air compressor station, the power station is on the west side of the refrigeration station, and the public engineering transfer station is on the south side of the circulating water station and on the east side of the refrigeration station.

[0111] In other possible embodiments, the utility area may be arranged with other internal layouts according to actual conditions.

[0112] Exemplarily, the fire protection facilities area includes: an initial rainwater pool, an accident wastewater pool, a fire protection pool and a fire station.

[0113] The initial rainwater pool, the accident wastewater pool, the fire water pool, and the fire station are adjacent to each other.

[0114] The fire water pool and the fire station are both close to the 1,3-propylene glycol production area and the storage tank warehouse area.

[0115] Specifically, the initial rainwater pool is used to collect and store initial rainwater, which can reduce pollution and reuse rainwater; the accident wastewater pool is used to collect and store wastewater in accident states to avoid pollution to the external environment; the fire water pool is used for emergency water supply during firefighting; the fire station is equipped with fire trucks and firefighters to deal with accidents such as fires within the factory area.

[0116] Specifically, in this embodiment, the initial rainwater pool and the accident wastewater pool are located in the north of the fire protection facility area, the initial rainwater pool is located on the west side of the accident wastewater pool, the fire water pool is located on the south side of the initial rainwater pool, and the fire station is located on the south side of the accident wastewater pool and the east side of the fire water pool. Through such a design, the fire water pool and the fire station are close to the 1,3-propylene glycol production area and the storage tank warehouse area, which is convenient for emergency water supply during firefighting, and the fire truck can quickly reach the fire area from the fire station.

[0117] In other possible embodiments, the fire protection facility area may be arranged with other internal layouts according to actual conditions.

[0118] Exemplarily, the storage tank warehouse area includes: a storage tank sub-area and a warehouse sub-area.

[0119] like Figure 6 As shown, the storage tank sub-area includes: an acrolein storage tank, a purified water storage tank, a chilled water storage tank, a hydrogen storage tank, a waste gas storage tank, a waste liquid storage tank and a 1,3-propylene glycol storage tank.

[0120] The warehouse sub-area includes: a warehouse and a loading and unloading area.

[0121] The storage tank sub-area is separated from the warehouse sub-area by a road.

[0122] The acrolein storage tank, the purified water storage tank, the chilled water storage tank, the hydrogen storage tank, the waste gas storage tank, the waste liquid storage tank, and the 1,3-propylene glycol storage tank are all constructed along the pipeline corridor.

[0123] The warehouse and the loading and unloading area are adjacent to each other.

[0124] Specifically, in this embodiment, the storage tank sub-area is located in the north of the storage tank warehouse area. The storage tank sub-area in this embodiment includes two acrolein storage tanks, one purified water storage tank, one chilled water storage tank, two hydrogen storage tanks, one waste gas storage tank, one waste liquid storage tank and two 1,3-propylene glycol storage tanks. Among them, the two acrolein storage tanks are located in the north of the storage tank sub-area, the purified water storage tank and the chilled water storage tank are respectively located on the south side of the two acrolein storage tanks, the two hydrogen storage tanks are respectively located on the south side of the purified water storage tank and the chilled water storage tank, the waste gas storage tank and the waste liquid storage tank are respectively located on the south side of the two hydrogen storage tanks, and the two 1,3-propylene glycol storage tanks are respectively located on the south side of the waste gas storage tank and the waste liquid storage tank. The warehouse sub-area is located in the south of the storage tank warehouse area, and the warehouse is located on the east side of the loading and unloading area.

[0125] In other possible embodiments, the storage tank warehouse area may be configured with other internal layouts according to actual conditions.

[0126] Exemplarily, a lightning rod is provided inside the storage tank sub-area, and a ring-shaped fire-fighting road is provided outside.

[0127] A fire barrier is arranged outside the storage tanks in the storage tank sub-area.

[0128] Specifically, in this embodiment, two acrolein storage tanks, one purified water storage tank, one chilled water storage tank, and two hydrogen storage tanks constitute the raw material tank area, and one waste gas storage tank, one waste liquid storage tank, and two 1,3-propylene glycol storage tanks constitute the finished product tank area. Among them, the entire exterior of the six storage tanks in the raw material tank area is provided with a fire dike, the exterior of the waste gas storage tank and the exterior of the waste liquid storage tank in the finished product tank area are respectively provided with fire dikes, and the entire exterior of the two 1,3-propylene glycol storage tanks is provided with a fire dike. The setting of the ring fire road enables fire trucks to reach any location of the storage tank sub-area without detouring, further improving the timeliness of fire response.

[0129] In other possible embodiments, the firebreak of the storage tank sub-area may be set to other forms according to actual conditions.

[0130] Exemplarily, the plant layout structure also includes: reserved development land.

[0131] The reserved development land is set inside or outside the factory area.

[0132] Specifically, in this embodiment, the reserved development land is set inside the factory area, specifically on the south side of the 1,3-propylene glycol production area and the public facilities area.

[0133] In other possible embodiments, the reserved development land may be set at other locations according to actual conditions.

[0134] Exemplarily, an acrolein pipeline, a first purified water pipeline, a first chilled water pipeline, a hydrogen pipeline, a waste gas pipeline, a waste liquid pipeline and a first 1,3-propylene glycol pipeline are arranged in the pipeline corridor between the storage tank warehouse area and the 1,3-propylene glycol production area.

[0135] A circulating water pipeline and a second chilled water pipeline are arranged in the pipe gallery between the public utility area and the 1,3-propylene glycol production area.

[0136] In the 1,3-propylene glycol production area, a second purified water pipeline is arranged in the pipe gallery between the purified water workshop and the hydration workshop; a 3-hydroxypropanal pipeline is arranged in the pipe gallery between the hydration workshop and the hydrogenation workshop; a light component pipeline and a heavy component pipeline are arranged in the pipe gallery between the hydration workshop and the by-product processing workshop; a high-pressure hydrogen pipeline is arranged in the pipe gallery between the compressor room and the hydrogenation workshop; a second 1,3-propylene glycol pipeline is arranged in the pipe gallery between the hydrogenation workshop and the refining workshop; and an aldehyde impurity pipeline is arranged in the pipe gallery between the refining workshop and the by-product processing workshop.

[0137] A separation area is provided in the pipe gallery, and the hydrogen pipeline, the high-pressure hydrogen pipeline, the first 1,3-propylene glycol pipeline, and the second 1,3-propylene glycol pipeline are respectively located in different separation areas.

[0138] Specifically, in this embodiment, the acrolein pipeline, the first purified water pipeline, the first chilled water pipeline, and the hydrogen pipeline are respectively used to transport acrolein, purified water, chilled water, and hydrogen from the storage tank warehouse area to the 1,3-propylene glycol production area; the waste gas pipeline, the waste liquid pipeline, and the first 1,3-propylene glycol pipeline are respectively used to transport waste gas, waste liquid, and 1,3-propylene glycol final products from the 1,3-propylene glycol production area to the storage tank warehouse area; the circulating water pipeline and the second chilled water pipeline are used to transport circulating water and chilled water from the public utility area to the 1,3-propylene glycol production area; the second purified water pipeline Used to transport purified water from the purified water workshop to the hydration workshop; the 3-hydroxypropanal pipeline is used to transport 3-hydroxypropanal from the hydration workshop to the hydrogenation workshop; the light component pipeline and the heavy component pipeline are used to transport light components (acetaldehyde, propionaldehyde) and heavy components (acetone) from the hydration workshop to the by-product processing workshop respectively; the high-pressure hydrogen pipeline is used to transport high-pressure hydrogen from the compressor room to the hydrogenation workshop; the second 1,3-propylene glycol pipeline is used to transport 1,3-propylene glycol crude product from the hydrogenation workshop to the refining workshop; the aldehyde impurity pipeline is used to transport aldehyde impurities from the refining workshop to the by-product processing workshop.

[0139] At the same time, hydrogen and high-pressure hydrogen are highly dangerous, and 1,3-propylene glycol is the target product, so a separation area is set up in the pipeline corridor, and the hydrogen pipeline, high-pressure hydrogen pipeline, the first 1,3-propylene glycol pipeline, and the second 1,3-propylene glycol pipeline are located in different separation areas, avoiding potential safety risks and life and economic losses.

[0140] Exemplarily, the first purified water pipeline, the first chilled water pipeline, the circulating water pipeline, the second chilled water pipeline, and the second purified water pipeline are all made of PVC pipes.

[0141] The hydrogen pipeline, the first 1,3-propylene glycol pipeline, the 3-hydroxypropanal pipeline, the high-pressure hydrogen pipeline, and the second 1,3-propylene glycol pipeline are all made of stainless steel pipes.

[0142] The waste gas pipeline, the waste liquid pipeline, the light component pipeline, the heavy component pipeline, and the aldehyde impurity pipeline are all made of stainless steel pipes with anti-corrosion coatings.

[0143] Specifically, PVC pipes are resistant to low temperatures and can block the penetration of pollutants, and can ensure the safety and purity of purified water, chilled water, and circulating water; stainless steel pipes have high strength, good sealing performance, and certain corrosion resistance, and can meet the transportation needs of hydrogen, 1,3-propylene glycol, 3-hydroxypropanal, and high-pressure hydrogen; while waste gas, waste liquid (products after treatment in the by-product treatment workshop), light components, heavy components (by-components after separation in the hydration workshop), and aldehyde impurities (by-components after separation in the refining workshop) are highly corrosive, so the corresponding pipelines use stainless steel pipes with anti-corrosion coatings.

[0144] The embodiment of the present application sets the positions of various areas within the factory based on the wind rose diagram, thereby reducing the pollution impact of the 1,3-propylene glycol production area and the tank warehouse area on the administrative area, the public facilities area and other densely populated areas; by setting the fire protection facility area and setting the location of the fire protection facility area within the factory, the safety and the timeliness of the fire protection response are improved; by setting the pipeline corridor, the convenience of gas and liquid transportation is improved; by setting the internal structure of the hydration workshop, especially the setting of the hydration reactor, the distillation tower, the light component distillation tower and the heavy component distillation tower, the recovery accuracy and utilization rate of acrolein, as well as the final productivity of 1,3-propylene glycol are improved.

[0145] The proposed hydrogenation workshop is internally provided with a hydrogenation reactor, a nano aeration tube and a temperature controller. The arrangement of the nano aeration tube increases the contact area between hydrogen and 3-hydroxypropionaldehyde, thereby increasing the degree and efficiency of the hydrogenation reaction.

[0146] The proposed circulating water station and utility transfer station are both close to the 1,3-propylene glycol production area, which is convenient for providing circulating water and utility materials, thereby facilitating production.

[0147] The proposed fire water pools and fire stations are close to the 1,3-propylene glycol production area and tank warehouse area, which is convenient for emergency water supply during firefighting, and fire trucks can quickly reach the fire area from the fire station.

[0148] The proposed storage tank sub-area is provided with a lightning rod inside and a ring fire road outside, and a firebreak is provided outside the storage tanks in the storage tank sub-area, thereby reducing the risk of fire.

[0149] The proposed reserved development land improves the flexibility and scalability of the plant layout.

[0150] The proposed pipeline corridor is provided with separation areas, and the hydrogen pipeline, the high-pressure hydrogen pipeline, the first 1,3-propylene glycol pipeline, and the second 1,3-propylene glycol pipeline are respectively located in different separation areas, thereby avoiding potential safety risks and life and economic losses.

[0151] By setting the materials of various pipes in the pipe gallery to match the corresponding gas and liquid materials and pressures, the service life of the pipes in the pipe gallery is extended.

[0152] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0153] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A plant layout structure for the production of 1,3-propylene glycol, characterized in that: include: Administrative area, public utility area, fire protection facility area, 1,3-propylene glycol production area and tank warehouse area; The locations of the administrative area, the public facilities area, the fire protection facilities area, the 1,3-propylene glycol production area and the storage tank warehouse area are set based on the wind rose diagram; A pipe gallery is provided between the public utility area, the 1,3-propylene glycol production area, and the storage tank warehouse area; The 1,3-propylene glycol production area includes: a central control room, a compressor room, a hydration workshop, a hydrogenation workshop, a refining workshop, a purified water workshop and a by-product processing workshop; The compressor room, the hydration workshop, the hydrogenation workshop, the refining workshop, the purified water workshop and the by-product treatment workshop are all constructed along the pipe gallery; The hydration workshop is provided with a hydration reaction kettle, a distillation tower, a light component distillation tower and a heavy component distillation tower; The outlet of the hydration reactor is connected to the inlet of the distillation tower; the bottom of the distillation tower is connected to a 3-hydroxypropionaldehyde storage tank, and the top outlet of the distillation tower is connected to the inlet of the light component distillation tower; the top of the light component distillation tower is connected to a light component storage tank, and the bottom of the light component distillation tower is connected to the inlet of the heavy component distillation tower; the bottom of the heavy component distillation tower is connected to a heavy component storage tank, and the top of the heavy component distillation tower is connected to an acrolein recovery tank, and the acrolein recovery tank is connected to the inlet of the hydration reactor.

2. A plant layout structure for the production of 1,3-propylene glycol according to claim 1, characterized in that: The hydrogenation workshop is provided with a hydrogenation reactor, a nano-aeration tube and a temperature controller; The outlets of the 3-hydroxypropanal storage tank and the nano aeration tube are both connected to the inlet of the hydrogenation reactor, and the temperature controller is thermally connected to the hydrogenation reactor.

3. A plant layout structure for the production of 1,3-propylene glycol according to claim 1, characterized in that: The administrative area is located on the leeward side of the factory area's minimum frequency wind direction throughout the year; The public facilities area and the fire protection facilities area are located on two adjacent sides of the administrative area respectively; The 1,3-propylene glycol production area is located in the center of the plant area and is on the downwind side of the maximum frequency wind direction of the administrative area and the public utility area throughout the year; The storage tank warehouse area is located on the leeward side of the plant area's highest frequency wind direction throughout the year; The administrative area, the public utility area, the fire-fighting facility area, the 1,3-propylene glycol production area, and the tank warehouse area are separated by roads.

4. A plant layout structure for the production of 1,3-propylene glycol according to claim 1, characterized in that: Said administrative area includes: administrative building, parking lot, and changing rooms; The said administrative building is adjacent to the main entrance of the plant; The parking lot and the changing room are adjacent to each other, and are both adjacent to the administrative building.

5. A plant layout structure for the production of 1,3-propylene glycol according to claim 1, characterized in that: The public facilities area includes: an experimental sub-area and a public sub-area; The experimental sub-area includes: machine repair room, power distribution room, and laboratory building; The public sub-area includes: air compression station, circulating water station, power station, refrigeration station, and public engineering transfer station; The experimental sub-area is separated from the public sub-area by a road; The machine repair room and the power distribution room are adjacent to each other, and both are adjacent to the laboratory building; The air compression station, the circulating water station, the power station, the refrigeration station, and the public engineering transfer station are adjacent to each other; The circulating water station and the public utility transfer station are both close to the 1,3-propylene glycol production area; The circulating water station and the air compressor station are both constructed along the pipeline corridor.

6. A plant layout structure for the production of 1,3-propylene glycol according to claim 1, characterized in that: The fire protection facilities area includes: initial rainwater pool, accident wastewater pool, fire water pool and fire station; The initial rainwater pool, the accident wastewater pool, the fire water pool, and the fire station are adjacent to each other; The fire water pool and the fire station are both close to the 1,3-propylene glycol production area and the storage tank warehouse area.

7. A plant layout structure for the production of 1,3-propylene glycol according to claim 1, characterized in that: The storage tank warehouse area includes: a storage tank sub-area and a warehouse sub-area; The storage tank sub-area includes: an acrolein storage tank, a purified water storage tank, a chilled water storage tank, a hydrogen storage tank, a waste gas storage tank, a waste liquid storage tank and a 1,3-propylene glycol storage tank; The warehouse sub-area includes: a warehouse and a loading and unloading area; The storage tank sub-area is separated from the warehouse sub-area by a road; The acrolein storage tank, the purified water storage tank, the chilled water storage tank, the hydrogen storage tank, the waste gas storage tank, the waste liquid storage tank, and the 1,3-propylene glycol storage tank are all constructed along the pipeline corridor; The warehouse and the loading and unloading area are adjacent; The storage tank sub-area is provided with a lightning rod inside and a ring-shaped fire-fighting road outside; A fire barrier is arranged outside the storage tanks in the storage tank sub-area.

8. A plant layout structure for the production of 1,3-propylene glycol according to claim 1, characterized in that: Also includes: Reserve land for development; The reserved development land is set inside or outside the factory area.

9. A plant layout structure for the production of 1,3-propylene glycol according to claim 1, characterized in that: The pipe gallery between the storage tank warehouse area and the 1,3-propylene glycol production area is provided with an acrolein pipeline, a first purified water pipeline, a first chilled water pipeline, a hydrogen pipeline, a waste gas pipeline, a waste liquid pipeline and a first 1,3-propylene glycol pipeline; A circulating water pipeline and a second chilled water pipeline are arranged in the pipe gallery between the public utility area and the 1,3-propylene glycol production area; In the 1,3-propylene glycol production area, a second purified water pipeline is provided in the pipe gallery between the purified water workshop and the hydration workshop; a 3-hydroxypropanal pipeline is provided in the pipe gallery between the hydration workshop and the hydrogenation workshop; a light component pipeline and a heavy component pipeline are provided in the pipe gallery between the hydration workshop and the by-product processing workshop; a high-pressure hydrogen pipeline is provided in the pipe gallery between the compressor room and the hydrogenation workshop; a second 1,3-propylene glycol pipeline is provided in the pipe gallery between the hydrogenation workshop and the refining workshop; an aldehyde impurity pipeline is provided in the pipe gallery between the refining workshop and the by-product processing workshop; A separation area is provided in the pipe gallery, and the hydrogen pipeline, the high-pressure hydrogen pipeline, the first 1,3-propylene glycol pipeline, and the second 1,3-propylene glycol pipeline are respectively located in different separation areas.

10. A plant layout structure for the production of 1,3-propylene glycol according to claim 9, characterized in that: The first purified water pipeline, the first chilled water pipeline, the circulating water pipeline, the second chilled water pipeline, and the second purified water pipeline are all made of PVC pipes; The hydrogen pipeline, the first 1,3-propylene glycol pipeline, the 3-hydroxypropanal pipeline, the high-pressure hydrogen pipeline, and the second 1,3-propylene glycol pipeline are all made of stainless steel pipes; The waste gas pipeline, the waste liquid pipeline, the light component pipeline, the heavy component pipeline, the aldehyde impurity pipeline are all made of stainless steel pipes with anti-corrosion coating.

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