CN213865386U

CN213865386U - Carbon disulfide warehousing and transportation system

Info

Publication number: CN213865386U
Application number: CN202022929659.9U
Authority: CN
Inventors: 李晓亮
Original assignee: Jilin Sanyuan Chemical Co ltd
Current assignee: LIAOYANG RUIXING CHEMICAL Co.,Ltd.
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-08-03
Anticipated expiration: 2030-12-09

Abstract

Carbon disulfide warehousing and transportation system belongs to carbon disulfide production technical field, especially relates to a carbon disulfide warehousing and transportation system. The utility model provides a carbon disulfide warehousing and transportation system that work effect is good. The utility model discloses carbon disulfide warehousing and transportation system includes the sewage strip tower, the import of sewage strip tower is respectively with 0.35MPa low pressure steam SL interface, nitrogen gas interface N links to each other, the export of sewage strip tower upper end connects the import of gas collecting vessel middle part, the export of gas collecting vessel upper end connects sulphur and retrieves the interface, the export water receiving seal basin air stripping condensate return mouth under the gas collecting vessel, the first entry in water seal basin loops through water seal water strip after-cooler, water seal water strip preheater connects the export of sewage strip tower lower extreme, water seal water strip preheater's water seal water export connects sewage strip tower upper portion water seal water import, water seal water strip preheater's water seal water import respectively with strip water pump export, water seal water circulating pump export, carbon disulfide storage tank import, carbon disulfide shift produces jar import and links to each other.

Description

Carbon disulfide warehousing and transportation system

Technical Field

The utility model belongs to the technical field of the carbon disulfide production, especially, relate to a carbon disulfide warehousing and transportation system.

Background

Carbon disulfide is an inorganic substance, a common solvent and a colorless liquid, and can dissolve sulfur simple substances. Carbon disulfide can be used for manufacturing rayon, pesticides, accelerators and the like, and can also be used as a solvent. The existing carbon disulfide storage and transportation systems need further improvement.

SUMMERY OF THE UTILITY MODEL

The utility model discloses just to above-mentioned problem, a carbon disulfide warehousing and transportation system that work effect is good is provided.

For realizing the above purpose, the utility model discloses a following technical scheme, the utility model discloses carbon disulfide storage and transportation system includes the sewage strip tower, the import of sewage strip tower is respectively with 0.35MPa low pressure steam SL interface, nitrogen gas interface N links to each other, the export of sewage strip tower upper end connects the import of gas collection tank middle part, the export of gas collection tank upper end connects sulphur recovery interface, export water receiving seal basin air stripping condensate return port under the gas collection tank, the first entry of water seal basin loops through water seal water strip aftercooler, water seal water strip preheater connects the export of sewage strip tower lower extreme, the water seal water export of water seal water strip preheater connects sewage strip tower upper portion water seal water inlet, the water seal water inlet of water seal water strip preheater links to each other with water pump strip export, water seal water circulation pump export, carbon disulfide storage tank import, carbon disulfide shift product jar import links to each other, water pump import respectively with water seal basin middle part export, The outlet of the waste water collecting tank is connected, and the water outlet of the waste water collecting tank is connected with a drainage ditch;

a first inlet of the wastewater collection tank is connected with an overflow port of a water-sealed water tank, a fresh water inlet of the water-sealed water tank is connected with production water IW, a second inlet of the water-sealed water tank is respectively connected with a water-sealed water overflow port of the carbon disulfide regular production tank and a water-sealed water overflow port of the carbon disulfide storage tank, and a water-sealed water outlet of the water-sealed water tank is connected with an inlet of a water-sealed water circulating pump;

a second inlet of the wastewater collection tank is respectively connected with a cleaning water outlet of a carbon disulfide shift production tank and a cleaning water outlet of a carbon disulfide storage tank, a carbon disulfide inlet of the carbon disulfide shift production tank is connected with an outlet of a carbon disulfide finished product subcooler, a carbon disulfide outlet of the carbon disulfide shift production tank is respectively connected with an inlet of a carbon disulfide emergency pump, an inlet of a carbon disulfide conveying and loading pump and an inlet of a carbon disulfide storage tank, and an outlet of the carbon disulfide emergency pump is connected with an inlet of a flash evaporation carbon disulfide receiving tank;

carbon disulfide is carried and the car loading pump export links to each other with carbon disulfide storage tank carbon disulfide import, tank car import respectively.

As another preferred scheme, the utility model discloses the inlet outlet of cold ware is connect circulating water CW mouth after the water seal water strip.

As another preferred scheme, the tank car of the utility model is arranged on the upper end of the partition fence at the upper end of the water collecting tank, and the nitrogen inlet of the tank car is connected with nitrogen N2.

As another kind of preferred scheme, the water seal basin divide into four and separates the pond, four separate the pond and set up overflow water mouth on upper portion respectively, the first entry and the second entry setting of water seal basin separate the pond upper end at first, and water seal basin air stripping is congealed water and is returned the mouth and set up at first separate the pond and extend to first separate the pond lower part through the pipeline, and water seal basin middle part export setting separates the pond middle part at first.

Secondly, a first partition wall and a second partition wall are arranged in the wastewater collection tank along the length direction of the wastewater collection tank, the lower end of the first partition wall is connected with the lower end of the wastewater collection tank, and the upper end of the first partition wall is spaced from the upper end of the wastewater collection tank; the upper end of the second partition wall is connected with the upper end of the wastewater collecting tank, and the lower end of the first partition wall is spaced from the lower end of the wastewater collecting tank;

an outlet of the wastewater collection tank is formed in the front upper side wall of a first interval in front of the first partition wall, a water outlet of the wastewater collection tank is formed in the front lower side wall of the first interval in front of the first partition wall, a first inlet and a second inlet of the wastewater collection tank are formed in the upper end of a third interval in the rear of the second partition wall, and a second interval is formed between the first partition wall and the second partition wall.

Additionally, first partition wall upper end is higher than the lower extreme of second partition wall.

The utility model has the advantages of.

The utility model discloses in the operation of carbon disulfide warehousing and transportation system device, storage tank water seal can contain carbon disulfide, and the carbon disulfide of long-time operation back aquatic can react and generate hydrogen sulfide, and hydrogen sulfide can dissolve into in the product carbon disulfide to influence carbon disulfide's product quality. Through the sewage strip tower that sets up, strip the water seal water in tank field, carbon disulfide and the hydrogen sulfide that desorption water seal water contains make water seal water cycle use, guaranteed product quality promptly, realized the waste water zero release again.

Drawings

The present invention will be further described with reference to the accompanying drawings and the following detailed description. The scope of protection of the present invention is not limited to the following description.

Figure 1 is a schematic structural diagram of the carbon disulfide synthesis part of the present invention.

Figure 2 is the structure schematic diagram of the carbon disulfide separation and purification part of the utility model.

Figure 3 is the structure schematic diagram of the carbon disulfide storage and transportation part of the invention.

FIG. 4 is a schematic structural view of the recovery part of the flare condensate of the present invention.

Fig. 5 and 6 are partially enlarged views of fig. 1.

Fig. 7 and 8 are partially enlarged views of fig. 2.

Fig. 9 and 10 are partially enlarged views of fig. 3.

Fig. 11 and 12 are partially enlarged views of fig. 4.

Detailed Description

As shown in the figure, the utility model discloses carbon disulfide warehousing and transportation system can be applied to carbon disulfide production system, and carbon disulfide production system includes that carbon disulfide synthesis part, carbon disulfide separation purification part, carbon disulfide warehousing and transportation part (promptly the utility model discloses carbon disulfide warehousing and transportation system) and torch congeal liquid and retrieve the part, and carbon disulfide synthesis part, carbon disulfide separation purification part, carbon disulfide warehousing and transportation part link to each other in proper order, and the input port that the liquid was retrieved to the torch is congealed the input port of part and is linked to each other with carbon disulfide separation purification part's output port, the synthetic partial output port of carbon disulfide respectively.

The utility model discloses the synthetic partial reaction production carbon disulfide of carbon disulfide, carbon disulfide purification part obtains pure carbon disulfide product, and carbon disulfide stores up the storage and the transportation of the partial carbon disulfide of being convenient for of fortune, and torch condensate recovery part is retrieved the condensate, practices thrift the environmental protection. The utility model discloses a mutually supporting of each part does benefit to reliable, the high-efficient production of carbon disulfide.

The carbon disulfide synthesis part comprises a sulfur melting tank, a solid sulfur inlet is arranged at the upper end of the sulfur melting tank, a lower end outlet of the sulfur melting tank is connected with a first inlet at the upper end of a pre-coating tank stirrer, a second inlet at the upper end of the pre-coating tank stirrer is connected with a lower end outlet of a gas stripping tower, an outlet of the pre-coating tank stirrer is connected with an upper end inlet of a sulfur filter through a pre-coating tank conveying pump, a lower end outlet of the sulfur filter is connected with a first inlet at the upper end of a liquid sulfur tank, a second inlet at the upper end of the liquid sulfur tank is connected with an outlet of a sulfur recovery unit, an outlet of the liquid sulfur tank is connected with a raw material sulfur inlet of a reaction furnace through a liquid sulfur conveying pump, a raw material gas inlet of the reaction furnace is connected with a purified gas outlet of a natural gas pressure swing adsorption device (PSA), a natural gas inlet is connected with a natural gas outlet of a natural gas buffer tank, an inlet of the natural gas buffer tank is connected with a transmission pipeline of raw material natural gas, a natural gas outlet of the natural gas recovery tail gas treatment unit, a desorbed gas outlet is respectively connected with a fuel gas main pipe of the reaction furnace, The sulfur recovery port is connected;

the outlet of the reaction furnace is connected with the inlet of the reactor, the outlet of the reactor is connected with the inlet of the sulfur condenser, the water inlet of the sulfur condenser is connected with the boiler water supply BFW interface, the steam outlet of the sulfur condenser is connected with the low-pressure steam SL interface, the outlet of the sulfur condenser is connected with the inlet of the sulfur condensate receiver, the boiler sewage outlet of the sulfur condenser is connected with the inlet of the boiler sewage discharge barrel, and the water inlet of the boiler sewage discharge barrel is connected with the CW port.

And the outlet of the sulfur condenser is connected with the inlet of the sulfur-containing gas separation tank through a valve.

The low-pressure steam SL interface is a 0.35MPa low-pressure steam SL interface.

The water outlet of the boiler blow-off barrel is connected with a floor drain through a funnel.

The utility model discloses carbon disulfide synthesis part is the purification of raw materials sulphur and natural gas to reaction production carbon disulfide in reacting furnace and reactor. The sulfur filter is arranged to remove impurities in the sulfur and the heavy components in the natural gas are removed by the natural gas purification device (PSA device), so that the operation period and the service life of the furnace tube in the reaction furnace are prolonged. The filtered sulfur enters a reaction furnace for reaction, so that mechanical impurities can be prevented from entering the reaction furnace and the reactor; the natural gas purified by the PSA device is separated from heavy components in the natural gas, so that the heavy components in the natural gas can be prevented from being cracked in the reaction furnace to form carbon deposition, and the running time of the reaction furnace is prolonged.

The carbon disulfide separation and purification part comprises a sulfur condensate receiver, an inlet of the sulfur condensate receiver is connected with an outlet of a sulfur condenser, an outlet at the upper end of the sulfur condensate receiver is respectively connected with an inlet of a desulfurizing tower and an outlet of a flash-evaporation carbon disulfide conveying pump, a reboiler return port of the desulfurizing tower is connected with an outlet of a reboiler of the desulfurizing tower, and the inlet of the reboiler of the desulfurizing tower is respectively connected with an outlet at the lower end of the desulfurizing tower, an outlet at the lower end of the sulfur condensate receiver and an inlet of a flash tank;

an outlet at the upper end of the desulfurizing tower is connected with an inlet of a carbon disulfide rectification feeding separation tank through a desulfurizing tower condenser, an outlet at the lower end of the carbon disulfide rectification feeding separation tank is respectively connected with an upper liquid phase feed inlet of the carbon disulfide rectification tower and an upper reflux port of the desulfurizing tower through a desulfurizing tower reflux pump, an upper gas phase feed inlet of the carbon disulfide rectification tower is connected with an upper outlet of the carbon disulfide rectification feeding separation tank, a lower outlet of the carbon disulfide rectification tower is respectively connected with a lower inlet of the carbon disulfide rectification tower, an inlet of a carbon disulfide finished product cooler and an upper outlet of the carbon disulfide rectification tower, and an outlet of the carbon disulfide finished product cooler is connected with a carbon disulfide shift tank through a carbon disulfide finished product subcooler;

the upper end gas phase outlet of the flash carbon disulfide refining tower is respectively connected with the upper end outlet of the flash tank and the inlet of the flash carbon disulfide condenser, the outlet of the flash carbon disulfide condenser is connected with the material inlet of the flash carbon disulfide receiving tank through a water separator, the material inlet of the flash carbon disulfide receiving tank is connected with the lower end outlet of the carbon disulfide refining tower through a jacket cooler (the jacket cooler is used for circulating process materials in an inner pipe, the process materials are introduced into a jacket to cool the process materials in the inner pipe), the upper end outlet of the flash carbon disulfide receiving tank is connected with the sulfur-free gas separation tank, and the upper end unqualified product return port of the flash carbon disulfide receiving tank is connected with the outlet of the carbon disulfide emergency pump; an outlet at the lower end of the flash evaporation carbon disulfide receiving tank is connected with an inlet of a flash evaporation carbon disulfide transfer pump;

an outlet at the lower end of the flash tank is connected with an inlet of a stripping tower, an outlet at the upper end of the stripping tower is connected with a sulfur removal and recovery interface, a sulfur outlet at the lower part of the stripping tower is connected with a sulfur recovery interface, and an outlet at the lower end of the stripping tower is connected with a precoating tank interface;

an outlet at the upper end of the carbon disulfide rectifying tower is respectively connected with a sulfur removal and recovery interface and an inlet of the sulfur-free gas separation tank.

And a steam inlet of the reboiler of the desulfurizing tower is connected with a 0.8MPa medium-pressure steam SM interface, and a liquid outlet of the reboiler of the desulfurizing tower is connected with a medium-pressure condensate interface SCM.

And the water inlet and the water outlet of the condenser of the desulfurizing tower are connected with a circulating water CW port.

And an overhead carbon disulfide rectifying tower condenser is arranged at the upper end of the carbon disulfide rectifying tower, and a water inlet and a water outlet of the carbon disulfide rectifying tower condenser are connected with a chilled water interface GW 2.

Carbon disulfide rectifying column reboiler return opening connects carbon disulfide rectifying column lower extreme export through carbon disulfide rectifying column reboiler, and the steam inlet of carbon disulfide rectifying column reboiler connects 0.8MPa low pressure steam SM interface, and the condensate export of carbon disulfide rectifying column reboiler connects middling pressure condensate interface SCM.

Carbon disulfide refining tower lower part reboiler returns the mouth and connects carbon disulfide refining tower lower extreme export through carbon disulfide refining tower reboiler, and carbon disulfide refining tower reboiler's steam inlet connects 0.35MPa low pressure steam SL interface, and carbon disulfide rectifying column reboiler's condensate export connects low pressure condensate SCL interface.

And the water inlet and outlet of the carbon disulfide finished product cooler are connected with a circulating water CW port, and the water inlet and outlet of the carbon disulfide finished product subcooler are connected with a chilled water interface GW 2.

And an overhead carbon disulfide refining tower condenser is arranged at the upper end of the carbon disulfide refining tower, and a water inlet and a water outlet of the carbon disulfide refining tower condenser are connected with a circulating water CW port.

And a water inlet of the flash evaporation carbon disulfide condenser is connected with a circulating water CW port.

And the water inlet and the water outlet of the jacketed pipe cooler are connected with a circulating water CW port.

A n-shaped pipeline (the n-shaped pipeline is used for liquid seal to prevent gas-phase media in the gas stripping tower from leaking out through a sulfur pipeline) is arranged between the outlet at the lower end of the gas stripping tower and the interface of the pre-coating groove.

As shown in fig. 2, the carbon disulfide separation purification: the process gas condensed from the condenser enters a sulfur condensate receiver (a-206). Here, the gas phase and the liquid phase are separated.

The liquid phase separated by the sulfur condensate receiver (a-206) is collected at the bottom of the knockout drum. The liquid sulfur and sulfur from the bottom of the desulfurizing tower (A-402) enter a flash evaporation tank (A408). The pressure in the flash tank is micro-positive pressure, CS2 is flashed out due to pressure reduction, the flashed sulfur containing trace CS2 and H2S enters a stripping tower of the sulfur recovery system for stripping by self-flow, liquid sulfur at the bottom of the stripping tower flows into a precoating tank by gravity, and gas at the top of the stripping tower still returns to the sulfur recovery system. The vapor phase from the top of the flash tank (A-408) enters the flash CS2 condenser (H-404) and is cooled by circulating water. The condensed liquid is inspected by a water separator (A-409), finally collected in a flash CS2 receiving tank (A-403), and then pumped into a desulfurizing tower (A-402) by a flash CS2 delivery pump (P-401A/B).

The gaseous phase from the sulphur condensate receiver (A-206) is passed to a desulphurisation column (A-402) where sulphur is further separated and collected at the bottom of the column. And (4) conveying the sulfur at the bottom of the tower to a flash evaporation tank for flash evaporation.

The heat for the reboiler (H-403) is provided by medium pressure steam.

The superheated gas at the top of the desulfurizing tower (A-402) enters a desulfurizing tower condenser (H-202) and is partially condensed by cooling water.

The condensed process stream enters a H2S distillation feed separator for gas-liquid separation. The liquid passes through a reflux pump (P-201A/B) of the desulfurizing tower, wherein one part of the liquid is used as reflux of the desulfurizing tower, and the other part of the liquid is used as liquid phase feed of a CS2 rectifying tower. The gas phase enters the CS2 rectifying tower directly.

The CS2 rectification column (a-401) receives a gas phase mixture of H2S and CS2, producing pure CS2 at the bottom and acid gas at the top. The heat required by the CS2 rectifying tower bottom is provided by a reboiler (H-401), and a built-in condenser is arranged at the tower top. The CS2 rectification column condenser (H-402), which is part of the CS2 distillation column (A-401), was installed at the top of the column, and the cooling medium used was ethylene glycol chilled liquid from the refrigeration system. H2S gas is produced at the top of the CS2 rectifying tower (A-401) and is conveyed to a sulfur recovery sulfur making furnace. When the system is in fire or leaks, it is vented to the flare system.

The CS2 rectifier reboiler (H-401) is provided by medium pressure steam.

The bottom of the CS2 rectification column (A-401) is pure CS2 product. Because of the pressure in the column, without the need for a pump, CS2 can be sent to CS2 product cooler (H-405) and CS2 product subcooler (H-406) for cooling and then sent to CS2 product shift tank (T-501A/B/C).

The CS2 finished product subcooler uses glycol chilled water as a cooling medium.

Normally, CS2 at the bottom of A-401 passes through a CS2 cooler (H-405) and a CS2 finished product subcooler (H-406), and is cooled and then conveyed to a shift production tank for storage. When the A-401 bottoms product is off specification or a refined product of carbon disulfide is desired, the A-401 bottoms product (CS 2) is sent to a carbon disulfide refining column (A-410).

Carbon disulfide containing impurities is arranged at the bottom of the carbon disulfide refining tower, and the carbon disulfide enters a flash evaporation CS2 receiving tank (A-403) after being cooled by a jacketed pipe cooler and is conveyed back to the desulfurizing tower for re-rectification. The jacketed pipe cooler uses circulating cooling water as a cooling medium.

Qualified carbon disulfide products treated by the carbon disulfide refining tower pass through a condenser (H-411) of the carbon disulfide refining tower at the top of the tower, come out from the upper part of the tower, pass through a CS2 cooler (H-405) and a CS2 finished product subcooler (H-406), are cooled, and are conveyed to a shift production tank for storage.

The process gas which is not cooled down at the top of the carbon disulfide refining tower enters a flash CS2 condenser (H-404), enters a flash CS2 receiving tank (A-403) after being cooled, and is conveyed back to the desulfurizing tower for re-rectification.

A carbon disulfide refining tower reboiler (H-410) is arranged at the bottom of the A-410, and low-pressure steam is used as a heat source. The top of the carbon disulfide refining tower is provided with a condenser (H-411) of a carbon disulfide refining tower, and circulating cooling water is used as a cooling medium.

The carbon disulfide rectifying tower and the carbon disulfide refining tower of the carbon disulfide separation and purification part of the utility model adopt internal reflux, and the condenser is arranged in an overhead type; the equipment investment is reduced, and the operating cost of the device is also reduced. The device is not provided with a storage device and a delivery pipeline for liquid hydrogen sulfide, so that the safety of the device is improved. And separating excessive sulfur and a byproduct hydrogen sulfide in the carbon disulfide product to obtain a pure carbon disulfide product. The carbon disulfide refining tower is arranged, so that light and heavy impurities of qualified varieties of carbon disulfide can be further removed, and a carbon disulfide refined product is obtained.

The carbon disulfide storage and transportation part comprises a sewage stripping tower, the inlet of the sewage stripping tower is respectively connected with a 0.35MPa low-pressure steam SL interface and a nitrogen interface N, the upper end outlet of the sewage stripping tower is connected with the middle inlet of a gas collection tank, the upper end outlet of the gas collection tank is connected with a sulfur recovery interface, the lower end outlet of the gas collection tank is connected with a water seal water tank gas condensate return port, the first inlet of the water seal water tank is sequentially connected with a water seal water stripping aftercooler and a water seal water stripping preheater through a water seal water stripping lower end outlet of the sewage stripping tower, the water seal water outlet of the water seal water stripping preheater is connected with the upper water seal water inlet of the sewage stripping tower, the water seal water inlet of the water seal water stripping preheater is respectively connected with a stripping water pump outlet, a water seal water circulating pump outlet, a carbon disulfide storage tank inlet and a carbon disulfide shift tank inlet (the water seal water circulating pump outlet conveys water seal water to the carbon disulfide storage tank inlet and the water seal water inlet of the carbon disulfide shift tank, and the outlet of the stripping water pump conveys water in the water-sealed water tank and the wastewater collecting tank to the stripping tower. Meanwhile, an outlet pipeline of the water-seal water circulating pump is communicated with an outlet pipeline of the stripping water pump, and the water-seal water in the water-seal water tank can be conveyed to the stripping tower through the water-seal water circulating pump;

And the water inlet and the water outlet of the water-sealed water stripping aftercooler are connected with a circulating water CW port.

The tank car sets up on the jube upper end of collecting the basin upper end (the tank car outside needs the spray water cooling when summer temperature is high, drenches the water that is collecting through collecting the basin under the car outside the transport tank), and the nitrogen gas import of tank car connects nitrogen gas N2 (the tank car carries out nitrogen seal after the carbon disulfide tank car loading).

The water seal basin divide into four and separates the pond, four separate the pond and set up overflow water mouth respectively on upper portion (make water seal water can separate the pond by first and begin one by one and separate pond overflow to next one), the first entry and the second entry setting of water seal basin separate the pond upper end at first, water seal basin air stripping is congealed water and is returned the mouth and set up at first separate the pond and extend to first separate the pond lower part through the pipeline (advance first separate bottom of the pool upwards again to the next interval, carry out the intensive cycle), water seal basin middle part export sets up at first separate middle part of the pond.

And (3) returning overflow water from the carbon disulfide shift tank T-501 and the carbon disulfide storage tank T-502 to the first separation tank, when water-sealed water needs to be stripped, opening a valve from the first separation tank to a stripping water pump P-504 to strip the returned overflow water, and taking the residual separation tank as a water source of a water-sealed water circulating pump P-503.

A first partition wall and a second partition wall are arranged in the wastewater collection tank along the length direction of the wastewater collection tank, the lower end of the first partition wall is connected with the lower end of the wastewater collection tank, and the upper end of the first partition wall is spaced from the upper end of the wastewater collection tank; the upper end of the second partition wall is connected with the upper end of the wastewater collecting tank, and the lower end of the first partition wall is spaced from the lower end of the wastewater collecting tank;

an outlet of the wastewater collection tank is formed in the front upper side wall of a first interval in front of the first partition wall, a water outlet of the wastewater collection tank is formed in the front lower side wall of the first interval in front of the first partition wall, a first inlet and a second inlet of the wastewater collection tank are formed in the upper end of a third interval in the rear of the second partition wall, and a second interval is formed between the first partition wall and the second partition wall. Set up the partition wall, with dividing into the triplex in the pond, all water that get into in the inslot all is by the third interval entering groove in, if there is the material to leak, because material proportion is greater than water, the material can deposit and collect in the third interval and the second interval to can not get into first interval and discharge outside the pond.

The upper end of the first partition wall is higher than the lower end of the second partition wall. Floating objects that may fall into the third interval are prevented from entering the first interval.

As shown in fig. 3, carbon disulfide is stored and transported: the produced CS2 was collected in one of three carbon disulfide shift tanks (T-501A/B/C) that were used alternately, each of which could store approximately 8 hours of production.

CS2 in the shift tank requires laboratory analysis before being sent to the carbon disulfide storage tank (T-502A/B/C). If the analyzed product is not qualified, the product can be returned to a flash CS2 collection tank (A-403) in the process system through a CS2 emergency pump (P-502). Of the three CS2 delivery and loading pumps (P-501A/B/C), P-501A/B can deliver CS2 in an on-duty tank to a carbon disulfide storage tank (T-502A/B/C), and P501B/C can be used for CS2 loading, that is, P-501B can be used as a backup pump for the P-501A and P-501C pumps.

Since CS2 has a high vapor pressure and is easily volatilized, it is stored under water. The water-sealed water is pumped into a CS2 storage tank through a water-sealed water circulating pump (P-503A/B) to enable the water to circulate between a CS2 storage tank and a water-sealed water tank (T-503). When CS2 enters the storage tank, excess water seal water flows into the water seal tank (T-503) through the overflow port.

After long-time operation, trace H2S is generated in the water seal water tank (T-503) and the wastewater collection tank (T-504), the water seal water is sent to a water seal water preheater (H-501) through a stripping water pump (P-504A/B) and is preheated by the stripped water seal water, and then the water seal water enters a stripping tower (A-501) for stripping. And discharging qualified water-sealed water after stripping from the bottom of the tower, cooling the water-sealed water twice by a water-sealed water preheater (H-501) and a water-sealed water stripping aftercooler (H-502), and returning the water-sealed water to a water-sealed water tank (T-503).

The water-sealed water preheater (H-501) uses water-sealed water delivered by a stripping water pump as a cooling medium, and the water-sealed water stripping aftercooler (H-502) uses circulating cooling water as a cooling medium.

The water vapor and the nitrogen are mixed and then enter from the bottom of the tower, the trace H2S in the water is stripped, and the stripped gas enters a gas collecting tank (A-502) to separate water drops which may be carried, and then enters a sulfur recovery unit. The water seal water collected in the gas collection tank returns to the water seal water tank (T-503).

The water-sealed water in the water-sealed water tank (T-503) can also be conveyed to the stripping tower (A-501) through a water-sealed water circulating water pump P-503.

And (3) discharging cleaning water generated during cleaning of the carbon disulfide shift tank (T-501A/B/C) and the carbon disulfide storage tank (T-502A/B/C) and overflow water generated by the water seal tank (T-503) into a wastewater collection tank (T-504).

The CS2 loading station was placed near the storage tank and loaded into the transport tank by the CS2 loading pump. After the CS2 product is filled, the transportation tank is filled with nitrogen for nitrogen sealing.

The torch condensate recovery part comprises a sulfur-free gas separation tank and a condensate tank, wherein an inlet of the sulfur-free gas separation tank is respectively connected with an outlet of the flash evaporation carbon disulfide receiving tank and an outlet of the carbon disulfide rectifying tower, an outlet of the sulfur-free gas separation tank is connected with a sulfur-free gas inlet of the torch sealing tank, a sulfur-containing gas inlet of the torch sealing tank is connected with an outlet of the sulfur-containing gas separation tank, and an inlet of the sulfur-containing gas separation tank is connected with an outlet of the sulfur condenser;

a liquid inlet of the condensate tank is connected with a low-pressure condensate SCL interface, a medium-pressure condensate inlet of the condensate tank is connected with an outlet at the lower end of the condensate flash tank, a liquid inlet at the upper part of the condensate flash tank is connected with a medium-pressure condensate interface SCM, and an outlet at the upper end of the condensate flash tank is connected with a 0.35MPa low-pressure steam SL interface;

an outlet at the upper end of the condensate tank is connected with a condensate inlet after the upper part of the condensate tank is flashed through a condensate flash condenser, and an outlet at the lower end of the condensate tank is connected with a deaerator through a condensate delivery pump.

And the water inlet and the water outlet of the condensate flash evaporation condenser are connected with a circulating water CW port.

The lower end enclosure part of the sulfur-free gas separation tank is provided with a jacket, the barrel body and the lower end enclosure part of the torch sealing tank are provided with jackets, and the barrel body and the lower end enclosure part of the sulfur-containing gas separation tank are provided with jackets.

The jacket can be used for heating, the jacket of the sulfur-containing gas separation tank prevents liquid sulfur from solidifying, and the jacket of the torch sealing tank prevents liquid from depositing. The jacket of the sulfur-free gas separation tank prevents liquefaction of the heavy components of the natural gas.

In the utility model, the separation tanks for sulfur-containing gas and sulfur-free gas are respectively arranged in front of the torch sealing tank to separate the liquid possibly contained in the exhaust gas, and the tank body is provided with a jacket to vaporize the collected liquid and then discharge the vaporized liquid; the medium-pressure steam condensate water firstly enters a condensate water flash tank, and 0.35MPa steam obtained by flash evaporation is sent to a low-pressure steam pipe network, so that heat energy is further saved.

It should be understood that the above detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.

Claims

1. The carbon disulfide storage and transportation system is characterized by comprising a sewage stripping tower, wherein an inlet of the sewage stripping tower is respectively connected with a low-pressure steam SL interface and a nitrogen interface N, an outlet at the upper end of the sewage stripping tower is connected with an inlet at the middle part of a gas collection tank, an outlet at the upper end of the gas collection tank is connected with a sulfur recovery interface, an outlet at the lower end of the gas collection tank is connected with a water seal water tank gas condensate return port, a first inlet of a water seal water tank sequentially passes through a water seal water stripping aftercooler, a water seal water stripping preheater is connected with an outlet at the lower end of the sewage stripping tower, a water seal water outlet of the water seal water stripping preheater is connected with an upper water seal water inlet of the sewage stripping tower, a water seal water inlet of the water stripping preheater is respectively connected with an outlet of a stripping water pump, an outlet of a water seal water circulating pump, an inlet of a carbon disulfide storage tank and an inlet of a carbon disulfide shift tank, and a stripping water pump inlet is respectively connected with an outlet at the middle part of the water seal water tank and an outlet of a wastewater collection tank, a water outlet of the waste water collecting tank is connected with a drainage ditch;

2. The carbon disulfide storage and transportation system as recited in claim 1, wherein the water inlet and outlet of the water-sealed water stripped intercooler are connected with a circulating water CW port.

3. The carbon disulfide storage and transportation system according to claim 1, wherein said tanker is disposed on the upper end of the partition at the upper end of the collection tank, and the nitrogen inlet of the tanker is connected to nitrogen N2.

4. The carbon disulfide storage and transportation system according to claim 1, wherein the water-sealed tank is divided into four separate tanks, overflow water ports are respectively arranged at the upper parts of the four separate tanks, a first inlet and a second inlet of the water-sealed tank are arranged at the upper end of the first separate tank, an air-stripping condensate return port of the water-sealed tank is arranged at the first separate tank and extends to the lower part of the first separate tank through a pipeline, and an outlet at the middle part of the water-sealed tank is arranged at the middle part of the first separate tank.

5. The carbon disulfide storage and transportation system according to claim 1, wherein a first partition wall and a second partition wall are disposed within the wastewater collection tank along the length of the wastewater collection tank, the lower end of the first partition wall being connected to the lower end of the wastewater collection tank, the upper end of the first partition wall being spaced from the upper end of the wastewater collection tank; the upper end of the second partition wall is connected with the upper end of the wastewater collecting tank, and the lower end of the first partition wall is spaced from the lower end of the wastewater collecting tank;

6. The carbon disulfide storage and transportation system of claim 5, wherein the upper end of said first partition is higher than the lower end of said second partition.