CN210584884U - Supercritical water gasification system intermittent discharge device - Google Patents
Supercritical water gasification system intermittent discharge device Download PDFInfo
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- CN210584884U CN210584884U CN201920990004.7U CN201920990004U CN210584884U CN 210584884 U CN210584884 U CN 210584884U CN 201920990004 U CN201920990004 U CN 201920990004U CN 210584884 U CN210584884 U CN 210584884U
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Abstract
The utility model relates to an intermittent discharge device of a supercritical water gasification system, which belongs to the technical field of energy clean utilization and environmental protection, and comprises a collection tank for collecting high-pressure medium, a feeding pipeline, a water inlet pipeline, a discharge pipeline and a pressure regulating pipeline which are connected with one end of the collection tank, wherein each pipeline controls the on-off of the collection tank through a stop valve arranged on the pipeline, the other end of the collection tank is connected with a high-pressure tank for controlling the pressure and volume change of the collection tank, and the other end of the high-pressure tank is connected with a constant pressure tank; the pressure regulating pipeline also comprises a back pressure valve, and the back pressure valve controls the on-off of the back pressure valve and the collecting tank through a stop valve. The utility model discloses an adopt intermittent type to discharge the mode to realize discharging supercritical water gasification system's pressure control and step-down, solved the complicated medium that produces in the gasification reaction and stopped up and the cavitation problem at high pressure step-down particle wear, adhesion that the process causes equipment.
Description
Technical Field
The utility model belongs to the technical field of energy clean utilization and environmental protection, a supercritical water gasification system intermittent type discharging equipment is related to.
Background
The supercritical water gasification system becomes an important technical means for treating wastes, and has the characteristics of good treatment effect, high reaction speed, compact system and the like. The safe and reliable operation of the system is a precondition for the commercialization of the supercritical water gasification system, and only if the gasification system can continuously operate, the system has economy because the supercritical water gasification system needs to consume energy in the starting process, and after the system is stopped every time, the gasification system needs to be overhauled and maintained, so that the cost of the gasification system is increased.
Pressure control and depressurization discharge are key factors influencing safe and reliable operation of the supercritical water gasification system, and because one of the operating conditions of the supercritical water gasification system is that the pressure is higher than the supercritical water critical pressure, the pressure of the system needs to be controlled. However, since the gasification system is operated continuously, continuous product discharge, i.e., depressurization discharge, is required. The traditional method for controlling pressure and reducing pressure discharge is to directly adopt a back pressure valve, although the decomposition rate of supercritical water gasification treatment is high, particles and oil substances are inevitably formed in the gasification process, and therefore a medium flowing through the back pressure valve is relatively complex. The medium contains particles, oil, gas and water, and the like, and the problems of particle abrasion, adhesion blockage, cavitation and the like can be caused in the pressure reduction process, so that the back pressure valve is invalid, and the safe and stable operation of the gasification system is finally influenced.
In the prior art, a multi-stage pressure reduction system is used for realizing high-pressure reduction, the problem of cavitation caused by a complex medium in the pressure reduction process is solved, and the problems of particle abrasion, adhesion, blockage and the like are not solved; in the prior art, the pressure control of a supercritical water system is realized by using the pressure sealing water, but the method needs to precisely control the pressure sealing water system, because the correlation degree of the pressure sealing water system control and the gasification system pressure control is deep, once the pressure sealing water system has a problem, the system breakdown is easily caused, and the adjustability of the pressure control by using the pressure sealing water system is poor.
SUMMERY OF THE UTILITY MODEL
In view of this, the purpose of this application is to provide a supercritical water gasification system intermittent type discharge device, through the mode that adopts intermittent type to discharge having realized the pressure control and the decompression of supercritical water gasification system, solved the complicated medium that the supercritical water gasification reaction produced and reduced pressure the particle wear, adhesion jam and the cavitation problem that the process initiated equipment at high pressure, improved gasification system's adjustability and reliability.
In order to achieve the above purpose, the utility model provides a following technical scheme:
an intermittent discharge device of a supercritical water gasification system comprises a collection tank for collecting a high-pressure medium, a high-pressure tank and a constant-pressure tank;
the high-pressure tank comprises a shell and a piston axially moving along the shell;
the two ends of the shell are respectively positioned in the collecting tank and the constant pressure tank, and the shell moves along the axial direction and is connected with the collecting tank and the constant pressure tank in a sealing way along the circumferential direction;
limiting parts for limiting the piston stroke and the shell stroke are arranged at two ends of the shell;
the two ends of the shell outside the piston stroke are provided with communicating holes for communicating the collecting tank and the constant pressure tank;
a piston rod is arranged on one side of the piston, and penetrates through the constant pressure tank and is connected with the constant pressure tank in a sealing manner;
one end of the collecting tank, which is far away from the high-pressure tank, is communicated with a feeding pipeline, a water inlet pipeline, a discharge pipeline and a pressure regulating pipeline, and each pipeline is provided with a stop valve for controlling the on-off of the pipeline and the collecting tank;
the pressure regulating pipeline further comprises a back pressure valve, and the back pressure valve controls the on-off of the back pressure valve and the collecting tank through a stop valve.
Optionally, the discharge pipe of the discharge line is a spiral buffer discharge pipe.
Optionally, the shut-off valve is a high-pressure electric shut-off valve.
Optionally, the device further comprises a first three-way joint, and the feeding pipeline, the water inlet pipeline and the collecting tank are connected through the first three-way joint.
Optionally, the system further comprises a second three-way joint, and the discharge pipeline, the pressure regulating pipeline and the collecting tank are connected through the second three-way joint.
Optionally, a touch-proof rod is arranged on one side of the piston away from the piston rod.
Optionally, the stop is symmetrical about the axis of the housing.
Optionally, the collection tank, high pressure tank and constant pressure tank are coaxial.
Optionally, one end of the piston rod, which is far away from the piston, is connected with a positioning piece
Optionally, the piston rod passes through the communication hole.
Optionally, the housing is open at one end of the collection tank.
The beneficial effects of the utility model reside in that:
1. the utility model discloses an intermittent type discharge mode realizes the complicated medium after the supercritical water gasification reaction of pressure adjustment equipment direct contact not to solved the pipeline that complicated medium causes at the decompression in-process and blockked up and the valve failure scheduling problem, strengthened pressure adjustment equipment's reliability, and then realized the safe and reliable operation of system.
2. The utility model discloses a with four ways branches on the collecting vessel and the steady voltage branch road of level pressure jar five way branch roads altogether separately control, not only realized gasification system's pressure control and step-down discharge function, still improved gasification system's adjustability in reliability.
3. The volume of the intermittent discharge device is variable by arranging the piston and the movable high-pressure tank; the volume of the device is adjusted, so that the collection and discharge of the medium after reaction are realized; through the pressure of the control constant pressure tank, the pressure control of the gasification system during feeding is realized, and the pressurization of the collecting tank is also realized, so that the device has the characteristics of simple structure and easiness in maintenance.
4. The utility model discloses a material is discharged to the mode of direct high pressure emission, and not only discharge speed is fast, has effectively reduced the volume of remaining of medium in the collection container moreover.
5. The utility model discloses a set up spiral buffering delivery pipe on the delivery pipeline, weakened because high-pressure discharge is to the impact and the wearing and tearing of pipeline, improved the safety in utilization of device, prolonged the life of device.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of the intermittent discharge device of the supercritical water gasification system of the present invention.
Reference numerals: the device comprises a feeding pipeline 1, a water inlet pipeline 2, a pressure regulating pipeline 3, a discharge pipeline 4, a collection tank 5, a high-pressure tank 6, a constant-pressure tank 7, a first high-pressure electric stop valve 101, a second high-pressure electric stop valve 201, a first high-pressure regulation backpressure valve 301, a third high-pressure electric stop valve 302, a fourth high-pressure electric stop valve 401, a discharge pipe 402, a touch prevention rod 601, a first limiting piece 602, a piston 603, a shell 604, a second limiting piece 605, a piston rod 606, a positioning hole 607, an inlet pipe 701, a fifth high-pressure electric stop valve 702, an outlet pipe 703, a sixth high-pressure electric stop valve 704 and a second high-pressure regulation backpressure valve 705.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Referring to fig. 1, an intermittent discharge device of a supercritical water gasification system includes a collection tank 5, a high pressure tank 6 and a constant pressure tank 7; the high-pressure tank 6 includes a housing 604 and a piston 603 that moves axially along the housing 604; the two ends of the shell 604 are respectively positioned in the collecting tank 5 and the constant pressure tank 7, the shell 604 moves along the axial direction and is connected with the collecting tank 5 and the constant pressure tank 7 in a sealing way along the circumferential direction; limiting parts for limiting the piston stroke and the shell stroke are arranged at two ends of the shell 604; the two ends of the shell 604 outside the piston stroke are provided with communication holes for communicating the collecting tank 5 and the constant pressure tank 7; a piston rod 606 is arranged on one side of the piston 603, the piston rod 606 penetrates through the constant pressure tank 7 and is in sealing connection with the constant pressure tank, and one end, far away from the piston 603, of the piston rod 606 is connected with a positioning piece; one end of the collecting tank 5 far away from the high-pressure tank 6 is communicated with a feeding pipeline 1, a water inlet pipeline 2, a discharge pipeline 4 and a pressure regulating pipeline 3.
The water inlet pipeline 2 is provided with a second high-pressure electric stop valve 201; the pressure regulating pipeline 3 comprises a third high-pressure electric stop valve 302 and a first high-pressure regulating back pressure valve 301 which are arranged in sequence along the pressure regulating direction; the discharge pipeline 4 is sequentially provided with a fourth high-pressure electric stop valve 401 and a discharge pipe 402 along the discharge direction, and the discharge pipe 402 is a spiral buffer discharge pipe; a fifth high-pressure electric stop valve 702 is arranged on an inlet pipeline 701 of the constant pressure tank 7, and a sixth high-pressure electric stop valve 704 and a second high-pressure regulating back pressure valve 705 are arranged on an outlet pipeline 703 of the constant pressure tank 7; the feeding pipeline 1, the water inlet pipeline 2 and the collecting tank 5 are connected through a first tee joint; the discharge pipeline 4, the pressure regulating pipeline 3 and the collecting tank 5 are connected through a second three-way joint.
A side of the piston 603 away from the piston rod 606 is provided with a touch-proof rod 601; the limiting members include a first limiting member 602 and a second limiting member 605, which are symmetrically disposed on two sides of the housing 604; the collection tank 5, the high-pressure tank 6 and the constant-pressure tank 7 are coaxial.
The feed inlet of the feed pipeline 1 in this embodiment is connected with a high-pressure system, the water inlet of the water inlet pipeline 2 is connected with a running water tank, the discharge port of the discharge pipeline 4 is connected with a buffer tank, and the inlet pipe 701 and the outlet pipe 703 of the constant-pressure tank 7 are connected with the constant-pressure system.
The housing 604 in this embodiment is open at one end of the collection tank 5; the piston rod 606 passes through a communication hole provided on the housing 604; the limiting piece is a limiting pin, the limiting pin is connected to the shell 604 in a welding mode, and a buffer layer is arranged at the position, in contact with the constant pressure tank 7 and the piston 603, of the limiting pin; the anti-touch rod 601 is connected to the piston 603 in a welding manner, and the anti-touch rod 601 is used for protecting the piston 603; the piston rod 606 is connected with the piston 603 in a welding way, and the piston rod 606 penetrates through the high-pressure tank 6 and extends out of the constant-pressure tank 7; the sealing of the connecting part of the piston rod 606 and the constant pressure tank 7 is high-pressure dynamic sealing, the connecting part of the piston rod 606 and the shell 604 is not sealed, and adjusting gas can enter the lower space surrounded by the piston 603 and the movable high pressure tank 6 through the connecting part; the lower part of the piston rod 606 is provided with a positioning hole 607 for realizing the position fixation of the piston 603; the joint of the high-pressure tank 6, the collecting tank 5 and the constant-pressure tank 7 is sealed in a high-pressure dynamic manner.
Preferably, the part of the stopper that contacts the constant pressure tank 7 and the piston 603 covers the cushion layer.
Preferably, the anti-touch bar is an elastic member.
Preferably, the portion of the anti-collision bar that contacts the collection tank 5 is covered with a buffer layer.
The specific working process of the device is as follows:
a collection stage: opening the first high-pressure electric stop valve 101 on the feeding pipeline 1, closing the second high-pressure electric stop valve 201 on the water feeding pipeline 2, the third high-pressure electric stop valve 302 on the pressure regulating pipeline 3 and the fourth high-pressure electric stop valve 401 on the discharging pipeline 4, feeding the high-pressure medium from the gasification reaction system into the collecting tank 5 from the high-pressure system connecting feed inlet, adjusting the pressure of the constant pressure tank 7 to be slightly lower than that of the collecting tank 5, slowly moving the piston 603 downwards to the position of the second limit part 605 at the lower end of the high-pressure tank 6 under the action of pressure difference, then driving the high-pressure tank 6 to move downwards, closing the first high-pressure electric stop valve 101 on the feeding pipeline 1 when the first limit part 602 at the upper end of the movable high-pressure tank 6 moves to be in contact with the collecting tank 5, stopping collection, fixing the piston 603 through the positioning hole 607 on the piston rod 606, i.e. the discharge phase.
And (3) discharging: at this time, it is ensured that the second high-pressure electric stop valve 201 on the water inlet pipeline 2, the third high-pressure electric stop valve 302 on the pressure regulating pipeline 3 and the first high-pressure electric stop valve 101 on the feeding pipeline 1 are closed, and the fourth high-pressure electric stop valve 401 on the discharge pipeline 4 is opened, and at this time, the medium collected in the collection tank 5 and the high-pressure tank 6 flows through the discharge pipe 402 under the action of pressure difference and enters the buffer tank, and after the discharge is finished, the next stage, namely the cleaning stage, is entered.
A cleaning stage: after the completion of discharging, open second high pressure electric stop valve 201 on the inlet channel 2, running water access device this moment, and wash it, wait to wash several times after, continue to beat water until the collection tank 5 fills with water, guarantee first high pressure electric stop valve 101 on the inlet channel 1 this moment, second high pressure electric stop valve 201 on the inlet channel 2 and the fourth high pressure electric stop valve 401 on the discharge channel 4 close, and open the third high pressure electric stop valve 302 on the pressure regulating pipeline 3, the constant pressure who adjusts first high pressure back pressure regulating valve 301 simultaneously is greater than the pressure of constant pressure jar 7, then get into next stage, the stage of pressurizing promptly.
And (3) a pressurizing stage: the positioning piece fixed on the piston rod 606 through the positioning hole 607 is removed, the piston rod 606 and the piston 603 are made movable, under the action of the pressure difference between the constant pressure tank 7 and the collection tank 5, the piston 603 moves upwards at the releasing moment, the pressure of the collection tank 5 rises instantly, because water is incompressible, the phenomenon that the piston 603 moves upwards quickly does not occur, then the first high pressure adjusting backpressure valve 301 on the pressure adjusting pipeline 3 is adjusted, the piston 603 moves upwards slowly, when the piston 603 moves to the position of the first limiting piece 602 at the upper end of the high pressure tank 6, the high pressure tank 6 is driven to move upwards under the action of the pressure difference, when the second limiting piece 605 at the lower end of the high pressure tank 6 moves to be in contact with the constant pressure tank 7, the third high pressure electric stop valve 302 on the pressure adjusting pipeline 3 is closed, the pressure of the constant pressure tank 7 is adjusted to be slightly lower than the pressure of the gasification system, and the first, and entering the collection phase of the next cycle.
Pressure adjustment of the constant pressure tank 7: the fifth high-pressure electric stop valve 702 on the inlet pipe 701 of the constant-pressure tank 7 and the sixth high-pressure electric stop valve 704 on the outlet pipe 703 of the constant-pressure tank 7 belong to normally open devices, the pressure of the constant-pressure tank 7 is adjusted through a second high-pressure adjusting back-pressure valve 705 on the outlet pipe 703 of the constant-pressure tank 7, and a constant-pressure system connected with the constant-pressure tank 7 runs all the time.
The device adopts intermittent discharge which can realize separation in space and time, is an important method for solving the problems of particle abrasion, adhesion blockage, cavitation and the like caused by complex media in the high-pressure-difference pressure reduction process, and is also an important method for reducing the degree of association between systems and enhancing the adjustability of the systems.
The volume of the intermittent discharge device is variable by arranging the piston 603 and the movable high-pressure tank 6; the volume of the device is adjusted, so that the collection and discharge of the medium after reaction are realized; through the pressure of the control constant pressure tank 7, the pressure control of the gasification system during feeding is realized, and the pressurization of the collecting tank is also realized, so that the device has the characteristics of simple structure and easiness in maintenance.
The device realizes that the pressure regulating equipment is not in direct contact with the complex medium after the supercritical water gasification reaction through intermittent discharge, thereby solving the problems of pipeline blockage, valve failure and the like caused by the complex medium in the pressure reduction process, enhancing the reliability of the pressure regulating equipment and further realizing the safe and reliable operation of the system.
This device is through the steady voltage branch road with four ways branches on the collecting tank and level pressure jar five way branch roads altogether separately control, has not only realized gasification system's pressure control and step-down and has discharged, has still improved gasification system's adjustability and reliability.
The device discharges the medium by adopting a direct high-pressure discharge mode, and the flow speed is high due to the action of pressure difference, so that residues are not easy to deposit, and the residual quantity of the medium is effectively reduced. Meanwhile, the spiral buffering discharge pipe is arranged on the discharge pipeline, so that the impact and abrasion of high-pressure discharge on the pipeline are weakened, the use safety of the device is improved, and the service life of the device is prolonged.
The utility model discloses a mode that adopts intermittent type to discharge realizes discharging supercritical water gasification system's pressure control and step-down, and the complicated medium that has solved gasification reaction and has generated blocks up and the cavitation problem at high pressure step-down process particle wearing and tearing, adhesion that equipment causes, has improved the security and the stability of device, has strengthened gasification system's adjustability, reliability and economic nature.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (9)
1. The utility model provides a supercritical water gasification system intermittent type discharge device, includes the collection tank of collecting high-pressure medium, its characterized in that: the device also comprises a high-pressure tank and a constant-pressure tank;
the high-pressure tank comprises a shell and a piston axially moving along the shell;
the two ends of the shell are respectively positioned in the collecting tank and the constant pressure tank, and the shell moves along the axial direction and is connected with the collecting tank and the constant pressure tank in a sealing way along the circumferential direction;
limiting parts for limiting the piston stroke and the shell stroke are arranged at two ends of the shell;
the two ends of the shell outside the piston stroke are provided with communicating holes for communicating the collecting tank and the constant pressure tank;
a piston rod is arranged on one side of the piston, and penetrates through the constant pressure tank and is connected with the constant pressure tank in a sealing manner;
one end of the collecting tank, which is far away from the high-pressure tank, is communicated with a feeding pipeline, a water inlet pipeline, a discharge pipeline and a pressure regulating pipeline, and each pipeline is provided with a stop valve for controlling the on-off of the pipeline and the collecting tank;
the pressure regulating pipeline further comprises a back pressure valve, and the back pressure valve controls the on-off of the back pressure valve and the collecting tank through a stop valve.
2. The intermittent discharge device of supercritical water gasification system of claim 1, wherein: the discharge pipe of the discharge pipeline is a spiral buffer discharge pipe.
3. The intermittent discharge device of supercritical water gasification system of claim 1, wherein: still include first three way connection, feed line, water intake pipe and holding tank pass through first three way connection and connect.
4. The intermittent discharge device of supercritical water gasification system of claim 1, wherein: the device also comprises a second three-way joint, and the discharge pipeline, the pressure regulating pipeline and the collecting tank are connected through the second three-way joint.
5. The intermittent discharge device of supercritical water gasification system of claim 1, wherein: and one side of the piston, which is far away from the piston rod, is provided with a touch-proof rod.
6. The intermittent discharge device of supercritical water gasification system of claim 1, wherein: the stopper is symmetrical about the axis of the housing.
7. The intermittent discharge device of supercritical water gasification system of claim 1, wherein: and one end of the piston rod, which is far away from the piston, is connected with a positioning piece.
8. The intermittent discharge device of supercritical water gasification system of claim 1, wherein: the housing is open at one end of the collection tank.
9. The intermittent discharge device of supercritical water gasification system of claim 1, wherein: the collecting tank, the high-pressure tank and the constant-pressure tank are coaxial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920990004.7U CN210584884U (en) | 2019-06-27 | 2019-06-27 | Supercritical water gasification system intermittent discharge device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920990004.7U CN210584884U (en) | 2019-06-27 | 2019-06-27 | Supercritical water gasification system intermittent discharge device |
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| CN210584884U true CN210584884U (en) | 2020-05-22 |
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| CN201920990004.7U Withdrawn - After Issue CN210584884U (en) | 2019-06-27 | 2019-06-27 | Supercritical water gasification system intermittent discharge device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110215887A (en) * | 2019-06-27 | 2019-09-10 | 重庆赛迪热工环保工程技术有限公司 | A kind of supercritical water gasification system intermittent discharge device and control method |
-
2019
- 2019-06-27 CN CN201920990004.7U patent/CN210584884U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110215887A (en) * | 2019-06-27 | 2019-09-10 | 重庆赛迪热工环保工程技术有限公司 | A kind of supercritical water gasification system intermittent discharge device and control method |
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