CN210979794U - Steam drum sewage and heat recovery device for Fischer-Tropsch synthesis plant - Google Patents
Steam drum sewage and heat recovery device for Fischer-Tropsch synthesis plant Download PDFInfo
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- CN210979794U CN210979794U CN201921645644.0U CN201921645644U CN210979794U CN 210979794 U CN210979794 U CN 210979794U CN 201921645644 U CN201921645644 U CN 201921645644U CN 210979794 U CN210979794 U CN 210979794U
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Abstract
The utility model discloses a steam pocket sewage and heat recovery device of a Fischer-Tropsch synthesis plant, which comprises a steam pocket, a flash tank, a steam condensate pipe and a Fischer-Tropsch synthesis unit, wherein the heat tracing condensate of the Fischer-Tropsch synthesis unit is connected with the inlet of the flash tank; a drain outlet at the bottom of the steam drum is connected with an inlet of the flash tank through a drain pipe, and a pressure pump is arranged on the drain pipe; the top of the flash tank is provided with a flash steam outlet which is connected with a steam pipeline; the bottom of the flash tank is provided with a water accumulating tank, the bottom of the water accumulating tank is provided with a liquid accumulating outlet, the liquid accumulating outlet is provided with a water accumulating outlet pipe, the water accumulating outlet pipe is branched into a first branch pipe and a second branch pipe, the first branch pipe is connected with a steam condensate pipe through a centrifugal pump, and the second branch pipe is connected with a clean water storage pool; the device can realize recycling of the Fischer-Tropsch steam drum sewage, reduce the heat of sewage, and simultaneously reduce the load of purification treatment of the public engineering wastewater.
Description
Technical Field
The utility model relates to a steam pocket blow off water and heat recovery device of ft synthesis plant belongs to sewage utilization device technical field.
Background
During the production operation period of the Fischer-Tropsch synthesis unit, in order to keep the quality of 2.8MPa steam delivered from the Fischer-Tropsch steam drum, the continuous blowdown and the periodic blowdown operation of the steam drum need to be continuously carried out, the blowdown water generated by the blowdown of the steam drum is delivered to a public engineering for treatment and recovery through a clean sewer pipe network, and the part of the blowdown water increases the purified wastewater load of the public engineering and causes water resource waste.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes prior art exists not enough, and the technical problem that solve provides a ft synthesis factory steam pocket blow off water and heat recovery unit, can realize the recovery of ft steam pocket blow off water and recycle, and it is shown to have reduced the sewage heat, can reduce public engineering waste water purification treatment load simultaneously.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
a steam drum sewage discharge and heat recovery device for a Fischer-Tropsch synthesis plant comprises a steam drum, a flash tank, a steam condensate pipe and a Fischer-Tropsch synthesis unit, wherein a heat tracing condensate of the Fischer-Tropsch synthesis unit is connected with an inlet of the flash tank through a condensate inlet pipe; the bottom of the steam drum is provided with a drain outlet, the drain outlet is connected with an inlet of the flash tank through a drain pipe, and the drain pipe is provided with a pressure pump; the top of the flash tank is provided with a flash steam outlet which is connected with a steam pipeline; the bottom of the flash tank is provided with a water accumulating tank, the bottom of the water accumulating tank is provided with a liquid accumulating outlet, the liquid accumulating outlet is provided with a water accumulating outlet pipe, the water accumulating outlet pipe is branched into a first branch pipe and a second branch pipe, the first branch pipe is connected with a steam condensate pipe through a centrifugal pump, and the second branch pipe is connected with a clean water storage pool; switch regulating valves are arranged on the first branch pipe and the second branch pipe; and the condensate inlet pipe is provided with a plurality of guide shower valves and a plurality of emptying ports.
Preferably, the pilot shower valve is a socket welding type double valve, and the vent is provided with a plug.
Preferably, the water accumulation tank is also provided with a liquid level meter.
Preferably, a pressure gauge is arranged on the flash steam outlet pipeline.
Preferably, the flash tank comprises a tank body, an inlet is arranged in the middle of the tank body, a liquid inlet pipe is arranged at the inlet, the liquid inlet pipe is connected with a condensate inlet pipe and a blow-off pipe, an outlet of the liquid inlet pipe is arranged in the center of the tank body, an outlet of the liquid inlet pipe is provided with a distributor, the distributor comprises a flow guide cavity, and a plurality of flow guide holes are uniformly formed in the side wall and the bottom of the flow guide cavity; the feed liquor pipe top is provided with the polylith baffle, the baffle is the type of falling V, and polylith baffle is range upon range of dislocation from top to bottom and arranges.
Compared with the prior art, the utility model following beneficial effect has.
The utility model adds DN300C300 pipeline at the position of the wax outlet ring pipe heat tracing condensate pipeline of the Fischer-Tropsch synthesis unit reactor, the material is 20# steel pipeline, and the heat of the discharged sewage is fully recovered through the standing tank for storing the steam pocket sewage; deposit the jar that stews of sewage and lead to steam drum blowdown ordinary pressure flash tank entry pipeline department through the pipeline, and the middle interval 10m installation is drenched towards sky double valve guide, and the water of leading from steam drum blowdown ordinary pressure flash tank exit line department leads 0.5MPa steam condensate pipe network on the ft unit piping lane, has realized the cyclic utilization of steam drum blowdown water, can also effectively supply the circulating water simultaneously, has reduced the consumption of water resource.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the distributor structure of the present invention.
In the figure: steam drum 1, flash tank 2, steam condensate pipe 3, ft synthesis unit 4, the condensate advances pipe 5, blow off pipe 7, force (forcing) pump 8, clean water reservoir 11, level gauge 12, manometer 13, ponding exit tube 20, flash distillation steam outlet 21, ponding tank 22, feed liquor pipe 23, distributor 24, water conservancy diversion chamber 241, water conservancy diversion hole 242, first branch pipe 25, second branch pipe 26, on-off control valve 27, baffle 28, lead shower valve 51, drain 52, plug 53.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
The device for recovering the steam drum sewage and the heat of the Fischer-Tropsch synthesis plant comprises a steam drum 1, a flash tank 2, a steam condensate pipe 3 and a Fischer-Tropsch synthesis unit 4, wherein the heat tracing condensate of the Fischer-Tropsch synthesis unit 4 is connected with an inlet of the flash tank through a condensate inlet pipe 5; the bottom of the steam drum 1 is provided with a drain outlet, the drain outlet is connected with an inlet of the flash tank through a drain pipe 7, and the drain pipe 7 is provided with a pressure pump 8; a flash steam outlet 21 is arranged at the top of the flash tank 2, and the flash steam outlet 21 is connected with a steam pipeline 9; a water accumulation tank 22 is arranged at the bottom of the flash tank, a liquid accumulation outlet is arranged at the bottom of the water accumulation tank 22, a water accumulation outlet pipe 20 is arranged at the liquid accumulation outlet, the water accumulation outlet pipe is branched into a first branch pipe 25 and a second branch pipe 26, the first branch pipe 25 is connected with the steam condensate pipe 3 through a centrifugal pump 10, and the second branch pipe 26 is connected with the clean water storage pool 11; the first branch pipe 25 and the second branch pipe 26 are provided with switch regulating valves 27;
the condensate inlet pipe 5 is provided with a plurality of guide shower valves 51 and a plurality of air vents 52, the guide shower valves 51 are socket welding type double valves, and the air vents 52 are provided with screw plugs 53.
The water accumulation tank is also provided with a liquid level meter 12.
And a pressure gauge 13 is arranged on the flash steam outlet pipeline.
The flash tank 2 comprises a tank body, an inlet is arranged in the middle of the tank body, a liquid inlet pipe 23 is arranged at the inlet, the liquid inlet pipe 23 is connected with a condensate inlet pipe and a blow-off pipe, an outlet of the liquid inlet pipe is arranged in the center of the tank body, a distributor 24 is arranged at an outlet of the liquid inlet pipe 23, the distributor 24 comprises a flow guide cavity 241, and a plurality of flow guide holes 242 are uniformly formed in the side wall and the bottom of the flow guide cavity 241; the feed liquor pipe top is provided with polylith baffle 28, baffle 28 is the type of falling V, and polylith baffle stacks up the dislocation and arranges from top to bottom.
The device can realize recycling of Fischer-Tropsch steam drum sewage, and the flow of the part of steam drum sewage can reach about 69t/h according to design calculation. After the technical improvement is completed, the waste of water resources can be effectively avoided, and the cost for treating the part of wastewater by public works can be reduced. Adding a DN300C300 pipeline at the position of a wax outlet ring pipe heat tracing condensate pipeline of a self-Fischer-Tropsch synthesis unit reactor, wherein the pipeline is made of a No. 20 steel pipeline, and fully recovering the heat of the discharged sewage through a standing tank for storing steam pocket sewage; deposit the jar that stews of sewage and lead to steam drum blowdown ordinary pressure flash tank entry pipeline department through the pipeline, and the middle interval 10m installation is drenched towards sky double valve guide, and the water of leading from steam drum blowdown ordinary pressure flash tank exit line department leads 0.5MPa steam condensate pipe network on the ft unit piping lane, has realized the cyclic utilization of steam drum blowdown water, can also effectively supply the circulating water simultaneously, has reduced the consumption of water resource.
The liquid inlet pipe 23 outlet on the flash tank is provided with a distributor, and the distributor is provided with a plurality of water conservancy diversion holes, can make the liquid that sprays from the discharge opening be the blowout of scattering form to further disperse the material, increase flash evaporation area. The inverted V-shaped baffle can prevent a small part of liquid phase materials from being brought out of the flash tank by flash steam.
The blowdown water of each ft synthesis unit and steam pocket gets into the flash tank, and the steam after the flash distillation gets into steam conduit, and 2 bottom condensate of flash tank send into clean water reservoir or steam condensate pipe network through centrifugal pump 4, and effectual recycle reduces the input of fresh water. Through sampling analysis and comparison, the part of sewage meets the quality requirement of the steam condensate, and is sent to a 0.5MPa steam condensate pipe network for recovery through a technically improved mode.
Reform transform on original device, obtain the work progress of this device:
(1) manufacturing a base of a newly added pressure pump;
(2) installing a pressure pump, connecting cables, and laying signal transmission lines;
(3) installing DN100C L300 at the positions of 26191-250-LL C-00701 of a steam condensate pipeline with the pressure of 0.5MPa of a Fischer-Tropsch unit pipe gallery, wherein the steam condensate pipeline is made of a 20# steel gate valve and is provided with holes under pressure;
(4) a gate valve is arranged on a pipeline from Fischer-Tropsch unit framework condensate to a header pipe 26191-L C-00406, the front of the gate valve is welded and isolated, a DN100C L300 gate valve is arranged, a hole is formed at the position with pressure, the pipeline is arranged to an inlet 26191-BDW-03702 of the atmospheric flash tank for steam drum blowdown, an upward vent is arranged at the interval of 10m at the section of the pipeline, a socket welding type double valve is arranged, and a plug is arranged at the vent.
(5) An equal-diameter tee joint is arranged on an outlet pipeline 26191 and 150-BDW-03703 of the steam drum pollution discharge normal-pressure flash tank, a DN 150C L150 gate valve is arranged on one side of the equal-diameter tee joint and is arranged at the position of an original clean water storage pool in a piping mode, a pipeline is arranged on the other side of the equal-diameter tee joint and is arranged at the inlet of a centrifugal pump, a double gate valve and a regulating valve are arranged at the outlet of the centrifugal pump, a bypass is synchronously configured, the gate valve is arranged, and finally the piping is.
(6) And (4) opening a hole on the tank body equipment of the normal-pressure flash tank, and installing a remote liquid level meter.
(7) And finishing cable laying and signal connection.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (5)
1. A steam drum sewage discharge and heat recovery device for a Fischer-Tropsch synthesis plant is characterized by comprising a steam drum, a flash tank, a steam condensate pipe and a Fischer-Tropsch synthesis unit, wherein heat tracing condensate of the Fischer-Tropsch synthesis unit is connected with an inlet of the flash tank through a condensate inlet pipe; the bottom of the steam drum is provided with a drain outlet, the drain outlet is connected with an inlet of the flash tank through a drain pipe, and the drain pipe is provided with a pressure pump; the top of the flash tank is provided with a flash steam outlet which is connected with a steam pipeline; the bottom of the flash tank is provided with a water accumulating tank, the bottom of the water accumulating tank is provided with a liquid accumulating outlet, the liquid accumulating outlet is provided with a water accumulating outlet pipe, the water accumulating outlet pipe is branched into a first branch pipe and a second branch pipe, the first branch pipe is connected with a steam condensate pipe through a centrifugal pump, and the second branch pipe is connected with a clean water storage pool; switch regulating valves are arranged on the first branch pipe and the second branch pipe; and the condensate inlet pipe is provided with a plurality of guide shower valves and a plurality of emptying ports.
2. The device for recovering blowdown water and heat of a steam drum of a Fischer-Tropsch synthesis plant according to claim 1, characterized in that the pilot shower valve is a socket welding type double valve, and the vent is provided with a plug.
3. The Fischer-Tropsch synthesis plant drum blowdown water and heat recovery device of claim 1, wherein the water accumulation tank is further provided with a liquid level meter.
4. The Fischer-Tropsch synthesis plant drum blowdown water and heat recovery device of claim 1, wherein a pressure gauge is arranged on the flash steam outlet pipeline.
5. The device for recycling blowdown water and heat of a steam drum of a Fischer-Tropsch synthesis plant according to claim 1, characterized in that the flash tank comprises a tank body, an inlet is arranged in the middle of the tank body, a liquid inlet pipe is arranged at the inlet, the liquid inlet pipe is connected with a condensate inlet pipe and a blowdown pipe, an outlet of the liquid inlet pipe is arranged in the central position in the tank body, an outlet of the liquid inlet pipe is provided with a distributor, the distributor comprises a diversion cavity, and a plurality of diversion holes are uniformly formed in the side wall and the bottom of the diversion cavity; the feed liquor pipe top is provided with the polylith baffle, the baffle is the type of falling V, and polylith baffle is range upon range of dislocation from top to bottom and arranges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921645644.0U CN210979794U (en) | 2019-09-29 | 2019-09-29 | Steam drum sewage and heat recovery device for Fischer-Tropsch synthesis plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921645644.0U CN210979794U (en) | 2019-09-29 | 2019-09-29 | Steam drum sewage and heat recovery device for Fischer-Tropsch synthesis plant |
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| CN210979794U true CN210979794U (en) | 2020-07-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803710A (en) * | 2021-10-14 | 2021-12-17 | 山西潞安煤基合成油有限公司 | Fixed-connection drainage and normal drainage condensate recovery method for Fischer-Tropsch synthesis workshop |
-
2019
- 2019-09-29 CN CN201921645644.0U patent/CN210979794U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803710A (en) * | 2021-10-14 | 2021-12-17 | 山西潞安煤基合成油有限公司 | Fixed-connection drainage and normal drainage condensate recovery method for Fischer-Tropsch synthesis workshop |
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