CN112408392B - Carbon disulfide warehousing and transportation system - Google Patents
Carbon disulfide warehousing and transportation system Download PDFInfo
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- CN112408392B CN112408392B CN202011427080.0A CN202011427080A CN112408392B CN 112408392 B CN112408392 B CN 112408392B CN 202011427080 A CN202011427080 A CN 202011427080A CN 112408392 B CN112408392 B CN 112408392B
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/70—Compounds containing carbon and sulfur, e.g. thiophosgene
- C01B32/72—Carbon disulfide
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/101—Sulfur compounds
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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 invention provides a carbon disulfide storage and transportation system with good working effect. The carbon disulfide storage and transportation system comprises a sewage stripping tower, wherein an inlet of the sewage stripping tower is respectively connected with a 0.35MPa 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 collecting tank, an outlet at the upper end of the gas collecting tank is connected with a sulfur recovery interface, an outlet at the lower end of the gas collecting tank is connected with a water seal water tank gas stripping condensate return port, a first inlet of the water seal water tank sequentially passes through a water seal water stripping aftercooler and a water seal water stripping preheater and 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 a water seal water inlet at the upper part of the sewage stripping tower, and 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 circulation pump outlet, a carbon disulfide storage tank inlet and a carbon disulfide shift production tank inlet.
Description
Technical Field
The invention belongs to the technical field of carbon disulfide production, and particularly relates to a carbon disulfide storage and transportation system.
Background
Carbon disulfide is an inorganic substance, a common solvent and colorless liquid, and can dissolve elemental sulfur. Carbon disulphide may be used in the manufacture of rayon, pesticides, promoters, etc., and may also be used as a solvent. The existing carbon disulfide storage and transportation system needs to be further improved.
Disclosure of Invention
The invention aims at the problems and provides a carbon disulfide storage and transportation system with good working effect.
In order to achieve the aim, the carbon disulfide storage and transportation system comprises a sewage stripping tower, wherein 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 outlet at the upper end of the sewage stripping tower is connected with the inlet in the middle of a gas collecting tank, the outlet at the upper end of the gas collecting tank is connected with a sulfur recovery interface, the outlet at the lower end of the gas collecting tank is connected with a water seal water tank gas stripping condensate return port, the first inlet of the water seal water tank is sequentially connected with the outlet at the lower end of the sewage stripping tower through a water seal water stripping aftercooler and a water seal water stripping preheater, the water seal water outlet of the water seal water stripping preheater is connected with the water seal water inlet at the upper part of the sewage stripping tower, the water seal water inlet of the water seal stripping preheater is respectively connected with the outlet of a water seal water pump, the outlet of a water seal water circulation pump, the inlet of a carbon disulfide storage tank and the inlet of a carbon disulfide shift production tank, the inlet of the water seal water tank is respectively connected with the outlet of the water seal water tank, and the water drain outlet of the wastewater collecting tank;
the first inlet of the wastewater collection tank is connected with an overflow port of a water seal tank, the fresh water inlet of the water seal tank is connected with production water IW, the second inlet of the water seal tank is respectively connected with a water seal overflow port of a carbon disulfide working tank and a water seal overflow port of a carbon disulfide storage tank, and the water seal water outlet of the water seal tank is connected with an inlet of a water seal water circulation pump;
the second inlet of the waste water collecting tank is respectively connected with a cleaning water outlet of the carbon disulfide work production tank and a cleaning water outlet of the carbon disulfide storage tank, the carbon disulfide inlet of the carbon disulfide work production tank is connected with a carbon disulfide finished product subcooler outlet, and the carbon disulfide outlet of the carbon disulfide work production tank is respectively connected with a carbon disulfide emergency pump inlet, a carbon disulfide conveying and loading pump inlet and a carbon disulfide storage tank carbon disulfide inlet, and the carbon disulfide emergency pump outlet is connected with a flash evaporation carbon disulfide receiving tank inlet;
the carbon disulfide delivery pump outlet and the carbon disulfide storage tank carbon disulfide inlet and the tank truck inlet are respectively connected.
As another preferable scheme, the water inlet and outlet of the water seal water stripping aftercooler is connected with the circulating water CW port.
As another preferable scheme, the tank truck is arranged on the upper end of a barrier at the upper end of the collecting water tank, and a nitrogen inlet of the tank truck is connected with nitrogen N2.
As another preferable scheme, the water seal water 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 seal water tank are arranged at the upper end of the first separate tank, a gas stripping condensate return port of the water seal water 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 seal water tank is arranged at the middle part of the first separate tank.
Secondly, a first partition wall and a second partition wall are arranged in the waste water collecting tank along the length direction of the waste water collecting tank, the lower end of the first partition wall is connected with the lower end of the waste water collecting tank, and the upper end of the first partition wall is spaced from the upper end of the waste water collecting tank; the upper end of the second partition wall is connected with the upper end of the wastewater collection tank, and the lower end of the first partition wall is spaced from the lower end of the wastewater collection tank;
the export setting of waste water collecting vat is on the preceding upper portion lateral wall of the anterior first interval of first partition wall, and the outlet setting of waste water collecting vat is on the preceding lower part lateral wall of the anterior first interval of first partition wall, and waste water collecting vat's first import and second import setting are in the upper end of the third interval in second partition wall rear portion, are the second interval between first partition wall and the second partition wall.
In addition, the upper end of the first partition wall is higher than the lower end of the second partition wall.
The invention has the beneficial effects that.
In the running process of the carbon disulfide storage and transportation system device, water sealed water of the storage tank can contain carbon disulfide, the carbon disulfide in the water can react to generate hydrogen sulfide after long-time running, and the hydrogen sulfide can be dissolved into the product carbon disulfide, so that the product quality of the carbon disulfide is affected. Through the sewage stripping tower, the water seal water in the tank area is stripped, and carbon disulfide and hydrogen sulfide contained in the water seal water are removed, so that the water seal water can be recycled, the product quality is ensured, and zero emission of wastewater is realized.
Drawings
The invention is further described below with reference to the drawings and the detailed description. The scope of the present invention is not limited to the following description.
FIG. 1 is a schematic diagram of a portion of the carbon disulfide synthesis according to the present invention.
FIG. 2 is a schematic diagram of a portion of the structure of the carbon disulfide separation and purification process of the present invention.
Fig. 3 is a schematic structural diagram of a carbon disulfide storage and transportation section according to the present invention.
FIG. 4 is a schematic diagram of a portion of the flare condensate recovery of the present invention.
Fig. 5 and 6 are partial enlarged views of fig. 1.
Fig. 7 and 8 are partial enlarged views of fig. 2.
Fig. 9 and 10 are partial enlarged views of fig. 3.
Fig. 11 and 12 are partial enlarged views of fig. 4.
Detailed Description
As shown in the figure, the carbon disulfide storage and transportation system can be applied to a carbon disulfide production system, and the carbon disulfide production system comprises a carbon disulfide synthesis part, a carbon disulfide separation and purification part, a carbon disulfide storage and transportation part (namely the carbon disulfide storage and transportation system) and a torch condensate recovery part, wherein the carbon disulfide synthesis part, the carbon disulfide separation and purification part and the carbon disulfide storage and transportation part are sequentially connected, and an input port of the torch condensate recovery part is respectively connected with an output port of the carbon disulfide separation and purification part and an output port of the carbon disulfide synthesis part.
According to the invention, the carbon disulfide is produced by the reaction of the carbon disulfide synthesis part, and the pure carbon disulfide product is obtained by the carbon disulfide purification part, the carbon disulfide storage and transportation part is convenient for storing and transporting the carbon disulfide, and the condensate is recovered by the torch condensate recovery part, so that the method is economical and environment-friendly. The invention is beneficial to the reliable and efficient production of the carbon disulfide by the mutual matching of the parts.
The carbon disulfide synthesis part comprises a sulfur melting tank, wherein the upper end of the sulfur melting tank is provided with a solid sulfur inlet, the lower end outlet of the sulfur melting tank is connected with the first inlet of the upper end of a precoating tank stirrer, the second inlet of the upper end of the precoating tank stirrer is connected with the lower end outlet of a gas stripping tower, the outlet of the precoating tank stirrer is connected with the upper end inlet of a sulfur filter through a precoating tank conveying pump, the lower end outlet of the sulfur filter is connected with the first inlet of the upper end of a liquid sulfur tank, the second inlet of the upper end of the liquid sulfur tank is connected with the outlet of a sulfur recovery unit, the outlet of the liquid sulfur tank is connected with the raw material sulfur inlet of a reaction furnace through a liquid sulfur conveying pump, the raw material gas inlet of the reaction furnace is connected with the purified gas outlet of a natural gas pressure swing adsorption device PSA, the inlet of the PSA raw material gas is connected with the natural gas outlet of a natural gas buffer tank, the inlet of the natural gas buffer tank is connected with a sulfur recovery tail gas treatment unit, and the PSA desorption gas outlet is respectively connected with a fuel gas main pipe and a sulfur recovery port of the reaction furnace;
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 drain outlet of the sulfur condenser is connected with the inlet of the boiler drain barrel, and the water inlet of the boiler drain barrel is connected with the circulating water CW.
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-down barrel is grounded through a funnel.
The carbon disulfide synthesis part is used for purifying raw material sulfur and natural gas, and the raw material sulfur and the natural gas react in a reaction furnace and a reactor to produce carbon disulfide. The sulfur filter is arranged to remove impurities in sulfur and the natural gas purification device (PSA device) is arranged to remove heavy components in natural gas, so that the operation period and the service life of furnace tubes 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 return port of a reboiler of the desulfurizing tower is connected with an outlet of a reboiler of the desulfurizing tower, and an 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 evaporation tank;
the upper outlet of the desulfurizing tower is connected with the inlet of a carbon disulfide rectification feeding separating tank through a desulfurizing tower condenser, the lower outlet of the carbon disulfide rectification feeding separating tank is respectively connected with an upper liquid phase feeding port of the carbon disulfide rectification tower and an upper reflux port of the desulfurizing tower through a desulfurizing tower reflux pump, the upper gas phase feeding port of the carbon disulfide rectification tower is connected with the upper outlet of the carbon disulfide rectification feeding separating tank, and the lower outlet of the carbon disulfide rectification tower is respectively connected with the lower inlet of a carbon disulfide rectification tower, the inlet of a carbon disulfide finished product cooler and the upper outlet of the carbon disulfide rectification tower, and the outlet of the carbon disulfide finished product cooler is connected with a carbon disulfide shift production tank through a carbon disulfide finished product subcooler;
the upper end gas phase outlet of the 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 tubular cooler (a jacket tubular cooler, process materials circulate in an inner pipe, process materials of which the inner pipe are cooled by circulating cooling water are introduced into the jacket), the upper end outlet of the flash carbon disulfide receiving tank is connected with a sulfur-free gas separating tank, and the upper end reject return port of the flash carbon disulfide receiving tank is connected with the outlet of a carbon disulfide emergency pump; the outlet of the lower end of the flash evaporation carbon disulfide receiving tank is connected with the inlet of the flash evaporation carbon disulfide conveying pump;
the outlet of the lower end of the flash tank is connected with the inlet of the stripping tower, the outlet of the upper end of the stripping tower is connected with a sulfur removal recovery interface, the outlet of the lower part of the stripping tower is connected with a sulfur recovery interface, and the outlet of the lower end of the stripping tower is connected with a precoating tank interface;
the outlet of the upper end of the carbon disulfide rectifying tower is respectively connected with the sulfur removal and recovery interface and the inlet of the sulfur-free gas separating tank.
And a steam inlet of the desulfurizing tower reboiler is connected with a medium-pressure steam SM interface of 0.8MPa, and a liquid outlet of the desulfurizing tower reboiler is connected with a medium-pressure condensate interface SCM.
And the water inlet and outlet of the desulfurizing tower condenser is connected with a circulating water CW port.
The upper end of the carbon disulfide rectifying tower is provided with an overhead carbon disulfide rectifying tower condenser, and a water inlet and a water outlet of the carbon disulfide rectifying tower condenser are connected with a chilled water interface GW2.
The reboiler return port at the lower part of the carbon disulfide rectifying tower is connected with the outlet at the lower end of the carbon disulfide rectifying tower through the reboiler of the carbon disulfide rectifying tower, the steam inlet of the reboiler of the carbon disulfide rectifying tower is connected with the 0.8MPa low-pressure steam SM interface, and the condensate outlet of the reboiler of the carbon disulfide rectifying tower is connected with the medium-pressure condensate interface SCM.
The reboiler return port at the lower part of the carbon disulfide refining tower is connected with the outlet at the lower end of the carbon disulfide refining tower through the reboiler of the carbon disulfide refining tower, the steam inlet of the reboiler of the carbon disulfide refining tower is connected with the low-pressure steam SL interface of 0.35MPa, and the condensate outlet of the reboiler of the carbon disulfide rectifying tower is connected with the low-pressure condensate SCL interface.
The water inlet and outlet of the carbon disulfide finished product cooler is connected with a circulating water CW port, and the water inlet and outlet of the carbon disulfide finished product subcooler is connected with a chilled water interface GW2.
The upper end of the carbon disulfide refining tower is provided with an overhead carbon disulfide refining tower condenser, 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 outlet of the jacket tube type cooler is connected with a circulating water CW port.
A Chinese character 'ji' -shaped pipeline (liquid seal is made by the Chinese character 'ji' -shaped pipeline to prevent gas phase medium in the stripping tower from leaking out from the sulfur pipeline) is arranged between the outlet at the lower end of the stripping tower and the precoating groove interface.
As shown in fig. 2, carbon disulfide separation and purification: the process gas condensed from the condenser enters a sulfur condensate receiver (a-206). Here, the gas-liquid two phases are separated.
The liquid phase separated by the sulfur condensate receiver (A-206) is collected at the bottom of the separation tank. The liquid sulfur and sulfur from the bottom of the desulfurizing tower (A-402) enter a flash tank (A408). The pressure in the flash tank is micro positive pressure, and CS is reduced due to pressure drop 2 Is flashed off and contains trace CS after flash vaporization 2 And H 2 S sulfur enters a stripping tower of the sulfur recovery system by self-flowing to carry out stripping, liquid sulfur at the bottom of the stripping tower flows into the precoating tank by gravity, and gas at the top of the stripping tower is still returned to the sulfur recovery system. The vapor phase coming out of the top of the flash tank (A-408) enters flash CS 2 And a condenser (H-404) cooled by circulating water. The condensed liquid is checked by a water separator (A-409) and finally collected in a flash CS 2 In the receiving tank (A-403), flash CS is carried out again 2 Conveying pump (P-401A/B) is driven into desulfurizing towerA-402）。
The gas phase from the sulfur condensate receiver (A-206) enters the desulfurizing tower (A-402), and sulfur is further separated and collected at the bottom of the tower. And sending the sulfur at the bottom of the tower to a flash tank for flash evaporation.
The heat of 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 H 2 And S, gas-liquid separation is carried out in the distillation feed separator. The liquid is returned to the desulfurizing tower through a desulfurizing tower return pump (P-201A/B), and the liquid is returned to the desulfurizing tower through a part of the return pump (P-201A/B) and is returned to the desulfurizing tower through a part of the return pump (CS) 2 And feeding liquid phase of the rectifying tower. Gas phase direct access to CS 2 And (3) a rectifying tower.
CS 2 Rectifying column (A-401) receives H 2 S and CS 2 The gas phase mixture, the bottom of the tower produces pure CS 2 Acid gas is produced from the top of the tower. CS (circuit switching) 2 The heat required at the bottom of the rectifying tower is provided by a reboiler (H-401), and the top of the rectifying tower is provided with a built-in condenser. CS (circuit switching) 2 Rectifying column condenser (H-402) as CS 2 A portion of the distillation column (A-401) was mounted at the top of the column, and the cooling medium used was glycol refrigerant from the refrigeration system. CS (circuit switching) 2 H is produced at the top of the rectifying tower (A-401) 2 S gas is conveyed to a sulfur recovery sulfur making furnace. In the event of a fire or leak in the system, the flare system is vented.
CS 2 The rectifying column reboiler (H-401) is provided by medium pressure steam.
CS 2 The bottom of the rectifying tower (A-401) is pure CS 2 And (5) a product. Because of the pressure in the tower, no pump is needed, CS 2 Can be sent to the CS 2 Finished cooler (H-405) and CS 2 Cooling the finished product of the subcooler (H-406) and feeding the cooled product into CS 2 In a ban-ban tank (T-501A/B/C).
CS 2 The finished subcooler uses glycol chilled water as a cooling medium.
Under normal conditions, CS at the bottom of A-401 2 Warp CS 2 Cooler (H-405 And CS) 2 And the finished product subcooler (H-406) is cooled and then conveyed to a working tank for storage. When the A-401 bottom product fails or the carbon disulfide as a finishing product is desired, the A-401 bottom product (CS 2 ) Sent to carbon disulphide refining column (A-410).
The bottom of the carbon disulfide refining tower is carbon disulfide containing impurities, and the carbon disulfide is cooled by a jacket tubular cooler and then enters flash evaporation CS 2 And a receiving tank (A-403) which is conveyed back to the desulfurizing tower for rectification again. The jacket-tube cooler uses circulating cooling water as a cooling medium.
The qualified carbon disulfide product treated by the carbon disulfide refining tower passes through a condenser (H-411) of the tower top carbon disulfide refining tower, comes out from the upper part of the tower and passes through CS 2 Cooler (H-405) and CS 2 And the finished product subcooler (H-406) is cooled and then conveyed to a working tank for storage.
The process gas which is not cooled down at the top of the carbon disulfide refining tower enters flash evaporation CS 2 Condenser (H-404), cooled and then enters flash CS 2 And a receiving tank (A-403) which is conveyed back to the desulfurizing tower for rectification again.
A reboiler (H-410) of the carbon disulfide refining tower is arranged at the bottom of the A-410, and low-pressure steam is used as a heat source. The top is provided with a condenser (H-411) of the carbon disulfide refining tower, and circulating cooling water is used as a cooling medium.
In the invention, an inner reflux is adopted in a carbon disulfide rectifying tower and a carbon disulfide refining tower of the carbon disulfide separation and purification part, and a condenser is arranged as an overhead type; reduces equipment investment and operation cost of the device. The device is not provided with a storage device and a conveying pipeline of liquid hydrogen sulfide, so that the safety of the device is improved. And (3) separating excessive sulfur and 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 the carbon disulfide qualified variety can be further removed, and a carbon disulfide refined product is obtained.
The carbon disulfide storage and transportation part comprises a sewage stripping tower, wherein 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 outlet of the upper end of the sewage stripping tower is connected with the inlet of the middle part of a gas collecting tank, the outlet of the upper end of the gas collecting tank is connected with a sulfur recovery interface, the outlet of the lower end of the gas collecting tank is connected with a water stripping condensate return port of a water sealing tank;
the first inlet of the wastewater collection tank is connected with an overflow port of a water seal tank, the fresh water inlet of the water seal tank is connected with production water IW, the second inlet of the water seal tank is respectively connected with a water seal overflow port of a carbon disulfide working tank and a water seal overflow port of a carbon disulfide storage tank, and the water seal water outlet of the water seal tank is connected with an inlet of a water seal water circulation pump;
the second inlet of the waste water collecting tank is respectively connected with a cleaning water outlet of the carbon disulfide work production tank and a cleaning water outlet of the carbon disulfide storage tank, the carbon disulfide inlet of the carbon disulfide work production tank is connected with a carbon disulfide finished product subcooler outlet, and the carbon disulfide outlet of the carbon disulfide work production tank is respectively connected with a carbon disulfide emergency pump inlet, a carbon disulfide conveying and loading pump inlet and a carbon disulfide storage tank carbon disulfide inlet, and the carbon disulfide emergency pump outlet is connected with a flash evaporation carbon disulfide receiving tank inlet;
the carbon disulfide delivery pump outlet and the carbon disulfide storage tank carbon disulfide inlet and the tank truck inlet are respectively connected.
And the water inlet and outlet of the water seal water stripping aftercooler is connected with the circulating water CW port.
The tank car sets up on the fence upper end of collecting tank upper end (the outside shower water cooling that needs of tank car when the summer temperature is high, drenches outside the transportation jar water and collects through collecting tank under the car), and the nitrogen gas import of tank car connects nitrogen gas N2 (carbon disulfide tank car carries out nitrogen seal after the loading of tank car).
The water seal water tank is divided into four separating tanks, overflow water ports are respectively arranged at the upper parts of the four separating tanks (water seal water can overflow from a first separating tank to a next separating tank one by one), a first inlet and a second inlet of the water seal water tank are arranged at the upper end of the first separating tank, a gas stripping condensate return port of the water seal water tank is arranged at the first separating tank and extends to the lower part of the first separating tank through a pipeline (the bottom of the advanced first separating tank is reversely arranged at the next separating tank upwards for full circulation), and an outlet at the middle part of the water seal water tank is arranged at the middle part of the first separating tank.
And returning overflow water returned by the carbon disulfide working tank T-501 and the carbon disulfide storage tank T-502 to the first separating tank, when the sealed water needs to be stripped, starting a valve from the first separating tank to the stripping water pump P-504 to strip the returned overflow water, and taking the remaining separating tank as a water source of the sealed water circulating pump P-503.
A first partition wall and a second partition wall are arranged in the waste water collecting tank along the length direction of the waste water collecting tank, the lower end of the first partition wall is connected with the lower end of the waste water collecting tank, and the upper end of the first partition wall is spaced from the upper end of the waste water collecting tank; the upper end of the second partition wall is connected with the upper end of the wastewater collection tank, and the lower end of the first partition wall is spaced from the lower end of the wastewater collection tank;
the export setting of waste water collecting vat is on the preceding upper portion lateral wall of the anterior first interval of first partition wall, and the outlet setting of waste water collecting vat is on the preceding lower part lateral wall of the anterior first interval of first partition wall, and waste water collecting vat's first import and second import setting are in the upper end of the third interval in second partition wall rear portion, are the second interval between first partition wall and the second partition wall. The partition wall is arranged to divide the pool into three parts, all water entering the tank enters the tank from the third section, and if materials leak, the materials are deposited and collected in the third section and the second section because the specific gravity of the materials is greater than that of the water, so that the materials cannot enter the first section and are discharged out of the pool.
The upper end of the first partition wall is higher than the lower end of the second partition wall. Preventing floats that may fall into the third interval from entering the first interval.
As shown in fig. 3, carbon disulfide is stored and transported: CS produced 2 Is collected in one of three carbon disulfide shift production tanks (T-501A/B/C), which are used alternately, each of which can store a production of about 8 hours.
CS in ban 2 Assay analysis is required prior to feeding into the carbon disulphide reservoir (T-502A/B/C). If the quality of the analyzed product is not qualified, the product can pass through CS 2 Emergency pump (P-502) returns flash CS in process system 2 In a collection tank (A-403). Three CS 2 In the conveying and loading pump (P-501A/B/C), the P-501A/B can store CS in a ban-ban tank 2 Is delivered to a carbon disulphide reservoir (T-502A/B/C) and P501B/C is available for CS 2 Loading, that is, P-501B can be used as a backup pump for P-501A and P-501C pumps.
Due to CS 2 Has higher vapor pressure and is easy to volatilize, so the water-sealed storage is needed. The water seal water is pumped into CS through a water seal water circulation pump (P-503A/B) 2 A storage tank for storing water in CS 2 The storage tank and the water seal water tank (T-503) are circulated. When CS is 2 When entering the storage tank, excessive water seal water flows into the water seal water 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 into the water seal water preheater (H-501) through the stripping water pump (P-504A/B), and the water seal water after stripping is preheated and then enters the stripping tower (A-501) for stripping. And discharging qualified water-sealed water after stripping from the bottom of the tower, cooling twice by a water-sealed water preheater (H-501) and a water-sealed water-stripped cooler (H-502), and returning to a water-sealed water tank (T-503).
The water seal water preheater (H-501) takes water seal water conveyed by a stripping water pump as a cooling medium, and the water seal water post-stripping cooler (H-502) takes circulating cooling water as a cooling medium.
The steam and nitrogen are mixed and enter from the bottom of the tower, trace H2S in the stripped water is fed into a gas collecting tank (A-502) to separate water drops possibly entrained, and then the gas 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 seal water in the water seal water tank (T-503) can also be conveyed to the stripping tower (A-501) through the water seal water circulating water pump P-503.
The cleaning water generated during the cleaning of the carbon disulfide working tank (T-501A/B/C) and the carbon disulfide storage tank (T-502A/B/C) and the overflow water generated by the water seal water tank (T-503) are discharged into a waste water collecting tank (T-504).
CS 2 The loading platform is arranged near the storage tank and passes through CS 2 The loading pump is loaded into the transport tank. After CS2 products are filled, nitrogen is filled into the transport tank for nitrogen sealing.
The flare 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 a flash evaporation carbon disulfide receiving tank and an outlet of a carbon disulfide rectifying tower, an outlet of the sulfur-free gas separation tank is connected with a flame sealing tank and is not provided with a sulfur-free gas inlet, a sulfur-containing gas inlet of the flame sealing tank is connected with a sulfur-containing gas separation tank outlet, and an inlet of the sulfur-containing gas separation tank is connected with an outlet of a sulfur condenser;
the liquid inlet of the condensate liquid tank is connected with a low-pressure condensate SCL interface, the medium-pressure condensate liquid inlet of the condensate liquid tank is connected with the outlet of the lower end of the condensate liquid flash tank, the liquid inlet at the upper part of the condensate liquid flash tank is connected with a medium-pressure condensate liquid interface SCM, and the outlet of the upper end of the condensate liquid flash tank is connected with a low-pressure steam SL interface of 0.35 MPa;
the upper outlet of the condensate liquid tank is connected with the condensate inlet after the upper portion of the condensate liquid tank is subjected to flash evaporation through a condensate flash evaporation condenser, and the lower outlet of the condensate liquid tank is connected with the deaerator through a condensate conveying pump.
And a water inlet and a water outlet of the condensate flash condenser are connected with a circulating water CW.
The lower end socket part of the sulfur-free gas separation tank is provided with a jacket, the barrel and the lower end socket part of the torch sealing tank are provided with jackets, and the barrel and the lower end socket part of the sulfur-free gas separation tank are provided with jackets.
The jacket can be used for heating, the jacket of the sulfur-containing gas separation tank prevents solidification of liquid sulfur, and the jacket of the torch sealing tank prevents liquid deposition. The jacket of the sulfur-free gas separation tank prevents liquefaction of natural gas heavy components.
According to the invention, a sulfur-containing gas separating tank and a sulfur-free gas separating tank are respectively arranged in front of a torch sealing tank, liquids possibly contained in exhaust gas are separated, a jacket is arranged on a tank body, and the collected liquids are discharged after being vaporized; the medium-pressure steam condensate firstly enters a condensate flash tank, and 0.35MPa steam obtained by flash evaporation is sent into a low-pressure steam pipe network, so that heat energy is further saved.
It should be understood that the foregoing detailed description of the present invention is provided for illustration only and is not limited to the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention may be modified or substituted for the same technical effects; as long as the use requirement is met, the invention is within the protection scope of the invention.
Claims (6)
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 collecting tank, an outlet at the upper end of the gas collecting tank is connected with a sulfur recovery interface, an outlet at the lower end of the gas collecting tank is connected with a water seal water tank gas stripping condensate return port, a first inlet of the water seal water tank is sequentially connected with an outlet at the lower end of the sewage stripping tower through a water seal water stripping aftercooler and a water seal water stripping preheater, a water seal water outlet of the water seal water stripping preheater is connected with a water seal water inlet at the upper part of the sewage stripping tower, a water seal water inlet of the water seal water stripping preheater is respectively connected with an outlet of a water seal water pump, an outlet of the water seal water circulation pump, an inlet of a carbon disulfide storage tank and an inlet of a carbon disulfide shift production tank, and a water outlet of the water seal tank is connected with a drainage ditch;
the first inlet of the wastewater collection tank is connected with an overflow port of a water seal tank, the fresh water inlet of the water seal tank is connected with production water IW, the second inlet of the water seal tank is respectively connected with a water seal overflow port of a carbon disulfide working tank and a water seal overflow port of a carbon disulfide storage tank, and the water seal water outlet of the water seal tank is connected with an inlet of a water seal water circulation pump;
the second inlet of the waste water collecting tank is respectively connected with a cleaning water outlet of the carbon disulfide work production tank and a cleaning water outlet of the carbon disulfide storage tank, the carbon disulfide inlet of the carbon disulfide work production tank is connected with a carbon disulfide finished product subcooler outlet, and the carbon disulfide outlet of the carbon disulfide work production tank is respectively connected with a carbon disulfide emergency pump inlet, a carbon disulfide conveying and loading pump inlet and a carbon disulfide storage tank carbon disulfide inlet, and the carbon disulfide emergency pump outlet is connected with a flash evaporation carbon disulfide receiving tank inlet;
the carbon disulfide conveying pump outlet and the truck loading pump outlet are respectively connected with a carbon disulfide inlet of a carbon disulfide storage tank and a carbon disulfide inlet of a tank truck;
the sewage stripping tower strips the water seal water in the tank area to remove carbon disulfide and hydrogen sulfide contained in the water seal water, so that the water seal water is recycled;
CS produced 2 Is collected in a carbon disulfide work tank (T-501A/B/C);
CS in ban 2 Assay analysis is required before feeding into the carbon disulphide reservoir (T-502A/B/C); if the quality of the analyzed product is not qualified, the product passes through CS 2 Emergency pump (P-502) returns flash CS in process system 2 A collection tank (A-403); CS (circuit switching) 2 CS in a delivery and loading pump to be used in a class-to-class tank 2 Conveying to a carbon disulfide storage tank (T-502A/B/C) and loading;
the water seal water is pumped into CS through a water seal water circulation pump (P-503A/B) 2 A storage tank for storing water in CS 2 The storage tank and the water seal water tank (T-503) circulate; when CS is 2 When the water enters the storage tank, excessive water seal water flows into a water seal water tank (T-503) through an overflow port;
generating trace H2S in the water seal water tank (T-503) and the wastewater collecting tank (T-504), sending the water seal water into a water seal water preheater (H-501) through a stripping water pump (P-504A/B), preheating by using the stripped water seal water, and then entering a stripping tower (A-501) for stripping; and discharging qualified water-sealed water after stripping from the bottom of the tower, cooling twice by a water-sealed water preheater (H-501) and a water-sealed water-stripped cooler (H-502), and returning to a water-sealed water tank (T-503).
2. The carbon disulfide storage and transportation system according to claim 1, wherein the water inlet and outlet of the water seal water stripper is connected with the circulating water CW port.
3. The carbon disulfide storage and transportation system according to claim 1, wherein the tank truck is arranged on the upper end of a barrier at the upper end of the collecting water tank, and a nitrogen inlet of the tank truck is connected with nitrogen N2.
4. The carbon disulfide warehousing and transportation system according to claim 1, wherein the water seal water 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 seal water tank are arranged at the upper end of the first separate tank, a gas stripping condensate return port of the water seal water tank is arranged at the first separate tank and extends to the lower part of the first separate tank through a pipeline, and a middle outlet of the water seal water tank is arranged at the middle part of the first separate tank.
5. The carbon disulfide storage and transportation system is characterized in that a first partition wall and a second partition wall are arranged in the waste water collecting tank along the length direction of the waste water collecting tank, the lower end of the first partition wall is connected with the lower end of the waste water collecting tank, and the upper end of the first partition wall is spaced from the upper end of the waste water collecting tank; the upper end of the second partition wall is connected with the upper end of the wastewater collection tank, and the lower end of the first partition wall is spaced from the lower end of the wastewater collection tank;
the export setting of waste water collecting vat is on the preceding upper portion lateral wall of the anterior first interval of first partition wall, and the outlet setting of waste water collecting vat is on the preceding lower part lateral wall of the anterior first interval of first partition wall, and waste water collecting vat's first import and second import setting are in the upper end of the third interval in second partition wall rear portion, are the second interval between first partition wall and the second partition wall.
6. The carbon disulfide storage and transportation system according to claim 5, wherein the upper end of the first partition is higher than the lower end of the second partition.
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