Evaporator with anti-washout device for black water flash vaporization

Abstract

The application discloses an evaporator with anti-scouring devices for black water flash evaporation and belongs to the technical field of evaporators. The evaporator is aimed at the problems of high manufacturing cost of equipment and lack of pipeline erosion protection. The evaporator comprises a fixing frame, a fixing ring and an evaporation tank. The fixing ring is fixedly connected to the outside of the evaporation tank. The fixing frame is connected with the fixing ring and arranged at the lower portion of the evaporation tank. A buffer mechanism is arranged in the evaporation tank. A feeding pipe is fixedly connected to the top of the evaporation tank. A first flange ring is fixedly connected to the top of the feeding pipe. A first connecting pipe is fixedly connected to the bottom of the evaporation tank. The buffer mechanism is fixedly connected to the bottom of the evaporation tank through a second flange ring. A flow guide mechanism is arranged below the buffer mechanism. The anti-scouring mechanism can protect the evaporation tank from scouring, avoid direct scouring of the evaporation tank in the black water flash evaporation process, and thus prolong the service life of the evaporation tank and improve the stability of the evaporation tank in use.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of evaporators, and particularly relates to an evaporator with anti-erosion device for black water flash evaporation. BACKGROUND

[0002] Black water, as a complex fluid rich in organic and inorganic substances, is produced in large quantities in the coal chemical industry, petroleum chemical industry and other industries. Through black water flash evaporation technology, the heat energy in the black water can be effectively recovered, and the pollution degree is reduced, realizing the recycling of resources and the protection of the environment.

[0003] However, in the black water flash evaporation process, as the core equipment, the stability and service life of the evaporator directly determine the operating efficiency and economic benefit of the entire system. However, due to the presence of corrosive substances, solid particles and the characteristics of high-speed flowing fluid in the black water, the inner wall of the evaporator is extremely susceptible to erosion, corrosion and wear, resulting in a decrease in the performance of the evaporator, a reduction in the service life, and even the occurrence of safety accidents.

[0004] Traditional evaporator design often uses methods such as increasing wall thickness and using corrosion-resistant materials to improve its anti-erosion and corrosion resistance, however, these methods not only increase the manufacturing cost of the equipment, but also do not achieve ideal results in actual operation. The existing evaporator lacks protection against erosion of related connecting pipelines caused by excessive flash gas during the black water flash evaporation process, thereby increasing the maintenance cost of the related pipelines.

[0005] Therefore, there is a need for an evaporator with anti-erosion device for black water flash evaporation to solve the problems of high manufacturing cost of the equipment and lack of pipeline erosion protection in the prior art. SUMMARY

[0006] The present application aims to provide an evaporator with anti-erosion device for black water flash evaporation to solve the problems raised in the background art.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solution: an evaporator with anti-erosion device for black water flash evaporation, comprising a fixed frame, a fixed ring and an evaporation tank, the fixed ring is fixedly connected to the outside of the evaporation tank, the fixed frame is connected to the fixed ring and is arranged at the lower part of the evaporation tank, a buffer mechanism is arranged in the evaporation tank, a feed pipe is fixedly connected to the top of the evaporation tank, a first flange ring is fixedly connected to the top of the feed pipe, a first connecting pipe is fixedly connected to the bottom of the evaporation tank, a second flange ring is fixedly connected to the bottom of the first connecting pipe, the buffer mechanism is fixedly connected to the bottom of the evaporation tank through the second flange ring, and a flow guide mechanism is arranged below the buffer mechanism.

[0008] The anti-scouring mechanism comprises an anti-scouring coating applied to the inner wall surface of the evaporation tank, a first baffle is arranged inside the evaporation tank, a fixed rod is fixedly connected to the first baffle near the bottom of one side of the evaporation tank, the fixed rod is connected to the evaporation tank, a second baffle is fixedly connected to the upper part of the outer side of the first baffle, a first flow slowing groove is arranged at the bottom of the inner side of the first baffle, and a second flow slowing groove is arranged on the second baffle at the intersection of the first baffle and the second baffle.

[0009] It should be noted that the fixed rod is provided with five first baffles, and the five first baffles are evenly arranged on the outer side surface of the first baffle and connected to the evaporation tank.

[0010] Further, the fixed rod, the first baffle and the second baffle are arranged in groups and four groups are arranged in the evaporation tank.

[0011] Further, the first baffle and the second baffle are arranged in the form of arc panels, an included angle α is formed between the first baffle and the second baffle and the evaporation tank, the included angle α is controlled to be 30°-60°, the second flow slowing groove is arranged at the intersection of the first baffle and the second baffle to smoothly connect the first flow slowing groove and the second flow slowing groove.

[0012] As a preferred embodiment, the buffer mechanism comprises a fixed pipe arranged at the bottom of the evaporation tank through a second flange ring, a third flange ring matched with the second flange ring is fixedly connected to the top of the fixed pipe, a second connecting pipe is fixedly connected to the right side of the fixed pipe, the bottom of the second connecting pipe is connected to the flow guiding mechanism, a communication port is arranged at the top of the fixed pipe, a buffer port is arranged below the communication port in the fixed pipe, a connecting port is arranged in the second connecting pipe, and a flow guiding port is arranged in communication between the buffer port and the connecting port.

[0013] As a preferred embodiment, the buffer port is provided with an enlarged portion at the upper part, the radius of the enlarged portion gradually increases from top to bottom, an arc-shaped bottom is arranged at the lower part of the buffer port, an arc-shaped top is arranged at the top of the connecting port, the arc-shaped top and the arc-shaped bottom are smoothly connected through the flow guiding port, and the flow guiding port is arranged to be inclined and raised from left to right.

[0014] As a preferred embodiment, the flow guiding mechanism comprises a flow guiding pipe fixedly connected to the bottom of the buffer mechanism and connected to the second connecting pipe, a fourth flange ring is fixedly connected to the bottom of the flow guiding pipe, a third connecting pipe is fixedly connected to the bottom of the flow guiding pipe through the fourth flange ring, a flow guiding plate is arranged in the flow guiding pipe, and a flow guiding groove is arranged in the flow guiding plate.

[0015] As a preferred implementation, the guide pipe is shaped according to actual installation requirements, and the guide grooves are arranged on the guide plate and are arranged in the guide plate and vertically through.

[0016] Compared with the prior art, the evaporator with the anti-scouring device for black water flashing has at least the following beneficial effects:

[0017] (1) The anti-scouring mechanism can protect the evaporation tank from being scoured directly in the black water flashing process, thereby prolonging the service life of the evaporation tank and improving the stability during use, and the evaporation tank and the inner wall form a certain angle, so that the black water forms a cyclone during flowing, thereby increasing the contact area between the black water and the inner wall of the evaporator, improving the flashing efficiency, and simultaneously, the airflow flow rate can carry the fluid and buffer the inner wall of the evaporation tank.

[0018] (2) The buffer mechanism and the flow guide mechanism can circulate the fluid through the buffer mechanism during the flashing of the black water through the evaporation tank, and can buffer the fluid with increased gas volume due to sudden flashing, so as to prevent the fluid from directly eroding the related pipeline and causing the pipeline to be eroded and damaged, thereby prolonging the service life of the pipeline and reducing the maintenance cost, and the flow guide mechanism can guide the flow direction and flow rate of the fluid, so as to guide the fluid to a specific area or channel and improve the practicability of the device. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a first perspective structural schematic view of the application;

[0020] Figure 2 It is a second perspective structural schematic view of the application;

[0021] Figure 3 It is a sectional view of the evaporation tank of the application;

[0022] Figure 4 It is a sectional view of the evaporation tank of the application; Figure 3 It is an enlarged structural schematic view of A in the application;

[0023] Figure 5 It is a sectional view of the evaporation tank of the application;

[0024] Figure 6 It is a sectional view of the buffer mechanism and the flow guide mechanism of the application;

[0025] Figure 7 It is a buffer flow direction schematic view of the buffer mechanism of the application;

[0026] Figure 8The first baffle and the second baffle structure schematic diagram of the present application;

[0027] Figure 9 The flow guide mechanism structure schematic diagram of the present application.

[0028] In the figure: 1, fixed frame; 2, fixed ring; 3, evaporation tank; 301, feed pipe; 302, first flange ring; 303, first connecting pipe; 304, second flange ring; 4, buffer mechanism; 401, fixed pipe; 402, third flange ring; 403, communication port; 404, buffer port; 4041, enlarged part; 4042, arc-shaped bottom; 405, second connecting pipe; 406, flow guide port; 407, connecting port; 4071, arc-shaped top; 5, anti-scouring mechanism; 501, anti-scouring coating; 502, fixed rod; 503, first baffle; 504, first slow-flow groove; 505, second baffle; 506, second slow-flow groove; 6, flow guide mechanism; 601, flow guide pipe; 602, fourth flange ring; 603, third connecting pipe; 604, flow guide plate; 605, flow guide groove. DETAILED DESCRIPTION

[0029] The present application will be further described below in conjunction with examples.

[0030] Please refer to Figures 1-9 The present application provides a black water flash evaporation evaporator with anti-scouring device, which comprises a fixed frame 1, a fixed ring 2 and an evaporation tank 3, the fixed ring 2 is fixedly connected to the outside of the evaporation tank 3, the fixed frame 1 is connected with the fixed ring 2 and is arranged at the lower part of the evaporation tank 3, a buffer mechanism 4 is arranged in the evaporation tank 3, the evaporation tank 3 is fixedly connected with a feed pipe 301 at the top, the top of the feed pipe 301 is fixedly connected with a first flange ring 302, the bottom of the evaporation tank 3 is fixedly connected with a first connecting pipe 303, the bottom of the first connecting pipe 303 is fixedly connected with a second flange ring 304, the evaporation tank 3 is fixedly connected with the buffer mechanism 4 through the second flange ring 304, and a flow guide mechanism 6 is arranged below the buffer mechanism 4.

[0031] The anti-scouring mechanism 5 comprises an anti-scouring coating 501 applied to the inner wall surface of the evaporation tank 3, a first baffle 503 arranged inside the evaporation tank 3, a fixed rod 502 fixedly connected to the first baffle 503 near the bottom of one side of the evaporation tank 3, the fixed rod 502 being connected to the evaporation tank 3, a second baffle 505 fixedly connected to the outer side upper portion of the first baffle 503, a first slow-flow groove 504 arranged at the inner side bottom of the first baffle 503, a second slow-flow groove 506 arranged at the intersection of the first baffle 503 and the second baffle 505, five fixed rods 502 arranged on the first baffle 503, the five first baffles 503 being evenly arranged on the outer side surface of the first baffle 503 and connected to the evaporation tank 3, and four groups of the fixed rods 502, the first baffles 503 and the second baffles 505 arranged in groups between the fixed rods 502, the first baffles 503 and the second baffles 505 and inside the evaporation tank 3, the four groups of the fixed rods 502, the first baffles 503 and the second baffles 503 being arranged in the evaporation tank 3 in a spaced arrangement from top to bottom.

[0032] The black water enters the evaporation tank 3 through the feed pipe 301 and realizes the black water flash evaporation process in the evaporation tank 3. Due to the arc-shaped arrangement of the first baffle 503 and the second baffle 505, the black water forms a rotational flow at the upper portion thereof, and the first baffle 503 and the second baffle 505 are scoured by the increase in the amount of flash evaporation gas in the flash evaporation process, so that the fluid is scoured out of the first slow-flow groove 504 and the second slow-flow groove 506, so as to improve the flash evaporation efficiency of the black water. At the same time, the arrangement of the anti-scouring coating 501 facilitates the scouring protection of the inside of the evaporation tank 3, thereby improving the service life of the evaporation tank 3. At the same time, the arrangement of the first baffle 503 and the second baffle 505 facilitates the buffering of excessive flash evaporation gas, thereby further improving the protection effect of the inner wall of the evaporation tank 3.

[0033] Further as shown in Figure 3 , Figure 4 , Figure 5 and Figure 8 , it is worth noting that the first baffle 503 and the second baffle 505 are arranged in an arc-shaped panel, the first baffle 503 and the second baffle 505 form an included angle α with the evaporation tank 3, the included angle α is controlled to be 30°-60°, the intersection of the second baffle 505 and the first baffle 503 is arranged in a smooth joint by the second slow-flow groove 506, and the first slow-flow groove 504 and the second slow-flow groove 506 are arranged in an arc-shaped groove.

[0034] The arc-shaped panel can better fit the inner wall and reduce the gap, thereby more effectively preventing scouring. The first baffle 503 and the second baffle 505 should form a certain included angle α with the evaporation tank 3 to guide the black water to form a rotational flow and reduce direct scouring. The size of the included angle α should be determined according to factors such as the properties, flow and flow rate of the black water, and is generally more appropriate between 30° and 60°.

[0035] According to the above working process can be known: through the setting of the anti-scouring mechanism 5, the evaporation tank 3 can be protected from scouring, avoiding direct scouring of the evaporation tank 3 during the black water flash evaporation, thereby improving the service life and stability of the evaporation tank 3 during use, and forming a certain angle between the inner wall of the evaporation tank 3, so that the black water forms a cyclone during flow, not only increasing the contact area of the black water and the inner wall of the evaporation tank 3, improving the flash evaporation efficiency, but also being able to take away the fluid through the airflow velocity and buffer the inner wall of the evaporation tank 3.

[0036] Further as Figure 1 、 Figure 2 、 Figure 6 and Figure 7 illustrated, it is worth noting that the buffer mechanism 4 includes a fixed pipe 401, the fixed pipe 401 is arranged at the bottom of the evaporation tank 3 through the second flange ring 304, the top of the fixed pipe 401 is fixedly connected with the third flange ring 402 matched with the second flange ring 304, the right side of the fixed pipe 401 is fixedly connected with the second connecting pipe 405, the bottom of the second connecting pipe 405 is connected with the flow guide mechanism 6, the inner top of the fixed pipe 401 is provided with a communication port 403, the lower part of the communication port 403 is provided with a buffer port 404 in the fixed pipe 401, the second connecting pipe 405 is provided with a connecting port 407, the buffer port 404 and the connecting port 407 are communicated and provided with a flow guide port 406, the upper part of the buffer port 404 is provided with an amplification part 4041 which is gradually enlarged from top to bottom, the lower part of the buffer port 404 is provided with an arc-shaped bottom 4042, the top of the connecting port 407 is provided with an arc-shaped top 4071, the arc-shaped top 4071 and the arc-shaped bottom 4042 are smoothly connected through the flow guide port 406, and the flow guide port 406 is obliquely arranged from left to right.

[0037] When the fluid flows into the buffer port 404 through the fixed pipe 401, due to the arrangement of the amplification part 4041, the flow rate of the fluid is relieved when passing through the communication port 403, and the gas impulse is also relieved when the liquid suddenly flashes too much gas, and the arc-shaped bottom 4042 is arranged to make the airflow flow to the arc-shaped top 4071 through the arc-shaped bottom 4042 cooperating with the flow guide port 406, further buffering the erosion of the pipeline of the fixed pipe 401, improving its service life, and through the cooperation of the flow guide port 406 and the arc-shaped top 4071, further buffering the flash gas volume, thereby improving the buffering of the second connecting pipe 405, and further improving its service life and reducing maintenance cost.

[0038] Further as Figure 1 、 Figure 2 、 Figure 6 and Figure 9As shown, and particularly pertinent, the flow guide mechanism 6 includes a flow guide pipe 601 fixedly connected to the bottom of the buffer mechanism 4 and connected with the second connecting pipe 405, the bottom of the flow guide pipe 601 is fixedly connected with a fourth flange ring 602, the bottom of the flow guide pipe 601 is fixedly connected with a third connecting pipe 603 through the fourth flange ring 602, a flow guide plate 604 is matched arranged in the flow guide pipe 601, a flow guide groove 605 is arranged in the flow guide plate 604, the shape of the flow guide pipe 601 is customized and formed according to actual installation requirements, and a plurality of flow guide grooves 605 are arranged on the flow guide plate 604 and arranged in a through manner.

[0039] The flow guide groove 605 facilitates the adjustment of the direction of the gas flow and the adjustment of the flow rate, so that the gas is guided to a specific area through the flow guide mechanism 6 and is guided to the subsequent connecting pipe through the third connecting pipe 603, further improving the processing efficiency.

[0040] The present scheme has the following working process: when the device is used, the device is connected through the first flange ring 302, and the bottom is connected with the subsequent processing pipe through the third connecting pipe 603, the black water enters the evaporation tank 3 through the feed pipe 301, and the black water flash evaporation process is realized through the evaporation tank 3, due to the arc-shaped arrangement of the first baffle 503 and the second baffle 505, the black water forms a cyclone at the upper part thereof, and the first baffle 503 and the second baffle 505 are washed by the increase of the flash evaporation gas amount in the flash evaporation process, so that the fluid is washed out of the first buffer groove 504 and the second buffer groove 506, so as to improve the flash evaporation efficiency of the black water, and at the same time, the inside of the evaporation tank 3 is protected by the arrangement of the anti-washing coating 501, so as to improve the service life of the evaporation tank 3, and at the same time, the first baffle 503 and the second baffle 505 are arranged, so as to buffer the excessive flash evaporation gas amount, further improve the protection effect of the inner wall of the evaporation tank 3, and at the same time, the buffer mechanism 4 is arranged, when the fluid flows into the buffer port 404 through the fixed pipe 401, due to the arrangement of the amplifying part 4041, the flow rate of the fluid is relieved when passing through the communication port 403, and when the liquid suddenly flash evaporates and the gas amount is too large, the gas impulse is also relieved, and the arc-shaped bottom 4042 is arranged, so that the gas flow passes through the arc-shaped bottom 4042 and flows to the arc-shaped top 4071 through the flow guide port 406, further eroding and buffering the pipeline of the fixed pipe 401, improving the service life thereof, and at the same time, the flow guide port 406 and the arc-shaped top 4071 are matched, further buffering the flash evaporation gas amount, so as to improve the buffering of the second connecting pipe 405, and at the same time, the flow guide groove 605 facilitates the adjustment of the direction of the gas flow and the adjustment of the flow rate, so that the gas is guided to a specific area through the flow guide mechanism 6 and is guided to the subsequent connecting pipe through the third connecting pipe 603, further improving the processing efficiency.

[0041] In summary: through the setting of the anti-scouring mechanism 5, the evaporation tank 3 can be protected from scouring, avoiding direct scouring of the evaporation tank 3 during the black water flash evaporation process, thereby improving the service life and stability of the evaporation tank 3 during use, and forming a certain angle with the inner wall of the evaporation tank 3, so that the black water forms a cyclone during flow, not only increasing the contact area of the black water and the inner wall of the evaporation tank 3, but also improving the flash evaporation efficiency, and at the same time, the airflow flow rate can carry away the fluid and provide a certain buffer for the inner wall of the evaporation tank 3; through the setting of the buffer mechanism 4 and the flow guide mechanism 6, during the flash evaporation of the black water through the evaporation tank 3, the fluid circulates through the buffer mechanism 4, and can buffer the fluid whose gas volume increases due to sudden flash evaporation, preventing it from directly eroding the related pipeline and causing the pipeline to be eroded and damaged, thereby improving the service life of the pipeline and reducing maintenance costs, and at the same time, the flow guide mechanism 6 can guide the flow direction and flow rate of the fluid, so as to guide the fluid to a specific area or channel, improving the practicability of the device.

[0042] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various changes and modifications to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An evaporator with anti-washing device for black water flash evaporation, comprising a fixed frame (1), a fixed ring (2) and an evaporation tank (3), characterized in that: The fixed ring (2) is fixedly connected to the outside of the evaporation tank (3), the fixed frame (1) is connected with the fixed ring (2) and arranged at the lower part of the evaporation tank (3), the evaporation tank (3) is provided with a buffer mechanism (4), the top of the evaporation tank (3) is fixedly connected with a feed pipe (301), the top of the feed pipe (301) is fixedly connected with a first flange ring (302), the bottom of the evaporation tank (3) is fixedly connected with a first connecting pipe (303), the bottom of the first connecting pipe (303) is fixedly connected with a second flange ring (304), the bottom of the evaporation tank (3) is fixedly connected with the buffer mechanism (4) through the second flange ring (304), and a flow guide mechanism (6) is arranged below the buffer mechanism (4). The anti-scouring mechanism (5) comprises an anti-scouring coating (501) applied to the inner wall surface of the evaporation tank (3), the evaporation tank (3) is provided with a first baffle (503), the first baffle (503) is fixedly connected with a fixed rod (502) near the bottom of one side of the evaporation tank (3), the fixed rod (502) is connected with the evaporation tank (3), the outer side of the upper part of the first baffle (503) is fixedly connected with a second baffle (505), and the inner side of the bottom of the first baffle (503) is provided with a first slow-flow groove (504); a second slow-flow groove (506) is arranged on the second baffle (505) at the intersection of the first baffle (503) and the second baffle (505). The first baffle (503) and the second baffle (505) are arranged in an arc-shaped panel, an included angle α is formed between the first baffle (503) and the second baffle (505) and the evaporation tank (3), the included angle α is controlled to be 30°-60°, the second baffle (505) is smoothly connected through the second slow-flow groove (506) at the intersection with the first baffle (503), and the first slow-flow groove (504) and the second slow-flow groove (506) are arranged in an arc-shaped groove.

2. An evaporator with anti-flashing device for black water flashing according to claim 1, characterized in that: Five fixed rods (502) are arranged on the first baffle (503), and the five first baffles (503) are evenly arranged on the outer side surface of the first baffle (503) and connected with the evaporation tank (3).

3. An evaporator with anti-flashing device for black water flashing according to claim 1, characterized in that: The fixed rod (502), the first baffle (503) and the second baffle (505) are arranged in groups and arranged in four groups in the evaporation tank (3), and the four groups of fixed rods (502), first baffles (503) and first baffles (503) are arranged in the evaporation tank (3) in a top-to-bottom interval.

4. An evaporator with anti-flashing device for black water flashing according to claim 1, characterized in that: The buffer mechanism (4) includes a fixed pipe (401) provided at the bottom of the evaporation tank (3) through a second flange ring (304), a third flange ring (402) fixedly connected to the top of the fixed pipe (401) and matched with the second flange ring (304), a second connecting pipe (405) fixedly connected to the right side of the fixed pipe (401), the bottom of the second connecting pipe (405) connected with the flow guide mechanism (6), a communication port (403) provided at the inner top of the fixed pipe (401), a buffer port (404) provided at the lower part of the fixed pipe (401), a connecting port (407) provided in the second connecting pipe (405), and a flow guide port (406) provided in communication between the buffer port (404) and the connecting port (407).

5. An evaporator with anti-flashing device for black water flashing according to claim 4, characterized in that: The buffer port (404) is provided with an enlarged portion (4041) with a gradually increasing radius from top to bottom, the lower part of the buffer port (404) is provided with an arc-shaped bottom (4042), the top of the connecting port (407) is provided with an arc-shaped top (4071), the arc-shaped top (4071) and the arc-shaped bottom (4042) are smoothly connected through the flow guide port (406), and the flow guide port (406) is obliquely arranged from left to right.

6. An evaporator with anti-flashing device for black water flashing according to claim 1, characterized in that: The flow guide mechanism (6) includes a flow guide pipe (601) fixedly connected to the bottom of the buffer mechanism (4) and connected with the second connecting pipe (405), a fourth flange ring (602) fixedly connected to the bottom of the flow guide pipe (601), a third connecting pipe (603) fixedly connected to the bottom of the flow guide pipe (601) through the fourth flange ring (602), and a flow guide plate (604) matched provided in the flow guide pipe (601).

7. An evaporator with anti-flashing device for black water flashing according to claim 6, characterized in that: The flow guide pipe (601) is custom-made according to actual installation requirements, a plurality of flow guide grooves (605) are provided on the flow guide plate (604), and the plurality of flow guide grooves (605) are uniformly arranged in the flow guide plate (604) and arranged in vertical communication.

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