A kind of MVR concentrator and concentrated liquid incineration system using MVR concentrator

Abstract

The application provides a MVR concentrator and a concentrated liquid incineration treatment system using the MVR concentrator, relates to the technical field of concentration devices, and the MVR concentrator comprises an inner tank body and an outer tank body, the inner tank body and the outer tank body are in a cylindrical shape and are horizontally arranged, the inner tank body is coaxially installed in the outer tank body, and the left end of the top of the inner tank body is provided with a water inlet end; at least two baffles, all the baffles are in a semicircular shape with the same diameter, the height of the baffles gradually increases from left to right, the circumferential surface of the baffles is in contact with the inner circumferential wall of the inner tank body, so that the inner tank body is divided into multiple concentration cavities, when liquid is discharged, the water inlet end discharges liquid, the liquid first enters the leftmost concentration cavity, and when the leftmost concentration cavity is filled with liquid, the liquid overflows the baffle and enters the adjacent concentration cavity; the baffles are used to divide multiple concentration cavities, liquid is concentrated after waste liquid in a previous concentration cavity is filled and the next concentration cavity is added, concentrated liquid is concentrated, steam can be concentrated and heated, and the area of generated attachments is reduced.

Description

Technical Field

[0001] This invention relates to the field of concentration equipment technology, specifically an MVR concentrator and a concentrated liquid incineration treatment system using the MVR concentrator. Background Technology

[0002] MVR evaporators are a new type of high-efficiency and energy-saving evaporation equipment mainly used in the pharmaceutical industry. This equipment uses low-temperature and low-pressure steam technology and clean energy to generate steam, separating water from the medium. It is an upgraded product that replaces traditional evaporators.

[0003] After treating chemical wastewater for a period of time, the inner wall of the MVR concentrator will be covered with a large area of ​​deposits. Industrial wastewater is acidic, so the deposits produced by industrial wastewater are highly corrosive and will corrode the inner wall of the MVR concentrator, reducing its service life and heat transfer efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an MVR concentrator that solves the problem that large areas of deposits will adhere to the inner wall of the tank of the existing MVR concentrator after a period of use.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: the MVR concentrator includes:

[0006] The inner tank and the outer tank are cylindrical and horizontally arranged. The inner tank is coaxially installed inside the outer tank. The water inlet is located at the left end of the top of the inner tank.

[0007] There are at least two baffles, all of which are semicircles with the same diameter. The height of the baffles gradually increases from left to right. The circumferential surface of the baffles contacts the inner circumferential wall of the inner tank, thereby dividing the inner tank into multiple concentration chambers. When discharging liquid, the liquid is discharged from the inlet end. The liquid first enters the leftmost concentration chamber. When the leftmost concentration chamber is full of liquid, the liquid overflows the baffle and enters the adjacent concentration chamber.

[0008] The scraper is connected to all the baffles and contacts the inner circumferential wall of the inner tank. Both ends of the scraper are connected to side plates, which contact the inner side wall of the inner tank.

[0009] The rotating device is used to control the rotation of the tank body along its axis, including the baffles, scrapers, and side plates.

[0010] A further technical solution of the present invention is that at least three water inlet pipes are equally spaced on the top of the inner tank, one water inlet pipe corresponds to one concentration chamber, the water inlet end is connected to the leftmost water inlet pipe, and a valve for controlling the liquid output is installed on the water inlet pipe.

[0011] A further technical solution of the present invention is that a steam chamber is formed between the outer wall of the inner tank and the inner wall of the outer tank, a steam outlet pipe is connected to the right end of the top of the inner tank, a steam inlet pipe is connected to the left end of the bottom of the outer tank, and a drain outlet is provided at the bottom of the right end of the outer tank.

[0012] A further technical solution of the present invention is that a spiral plate is provided inside the steam chamber, the axis of the spiral plate is collinear with the axis of the inner tank, the inner spiral edge of the spiral plate is in contact with the outer circumferential surface of the inner tank, and the outer spiral edge of the spiral plate is in contact with the inner circumferential surface of the outer tank, thereby causing the steam to flow spirally in the steam chamber.

[0013] A further technical solution of the present invention is that a first notch is provided at the bottom end of the spiral plate, which is used to allow the condensate in the steam pipe to flow through the first notch to the drain outlet.

[0014] A further technical solution of the present invention is that a plurality of first annular plates and a plurality of second annular plates are alternately arranged in the steam chamber. The outer ring of the first annular plate is connected to the inner wall of the outer tank, and the inner ring of the first annular plate has a certain gap with the outer wall of the inner tank. The outer ring of the second annular plate has a certain gap with the inner wall of the outer tank, and the second annular plate is connected to the outer wall of the inner tank.

[0015] A further technical solution of the present invention is that a second notch is provided at the bottom end of the first annular plate, which is used to allow the condensate in the steam pipe to flow through the second notch to the drain outlet.

[0016] A further technical solution of the present invention is that a drain port is provided at the bottom of the right end of the inner tank. When the baffle is located at the bottom of the inner tank, the side plate blocks the drain port, preventing the liquid inside the inner tank from passing through the drain port. When the baffle is rotated upward, the side plate no longer blocks the drain port, and the liquid inside the inner tank can pass through the drain port.

[0017] A further technical solution of the present invention is that a rotating shaft is rotatably installed on the axis of the inner tank, a baffle is fixedly installed on the rotating shaft, a rotating device is used to control the rotation of the rotating shaft, at least two connecting rods are fixedly installed, a spiral plate is installed at the end of the connecting rod away from the rotating shaft, the outer spiral edge of the spiral plate contacts the inner circumferential wall of the inner tank, and the movement range of two adjacent spiral plates has an overlapping part.

[0018] Another object of the present invention is to provide a concentrated liquid incineration treatment system, including an incinerator and an MVR concentrator, wherein the concentrated liquid produced by the MVR concentrator is sprayed into the incinerator for incineration via a spray device.

[0019] The beneficial effects of this invention are:

[0020] When using this invention, baffles are used to separate multiple concentration chambers. After one concentration chamber is filled with waste liquid, the next concentration chamber is added. This concentrates the liquid, ensuring that the steam can be heated in a concentrated manner, while also reducing the area on which deposits are formed. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention.

[0022] Figure 2 This is a cross-sectional structural diagram of Embodiment 1 of the present invention.

[0023] Figure 3 This is a schematic diagram of the baffle structure in Embodiment 1 of the present invention.

[0024] Figure 4 This is a cross-sectional structural diagram of Embodiment 2 of the present invention.

[0025] Figure 5 This is a schematic diagram of the internal structure of Embodiment 2 of the present invention.

[0026] Figure 6 This is a front sectional view of Embodiment 3 of the present invention.

[0027] Figure 7 This is a schematic diagram of the annular plate in Embodiment 3 of the present invention.

[0028] Figure 8 This is a schematic diagram of the internal structure of Embodiment 4 of the present invention.

[0029] Figure 9 This is a front view of the interior of Embodiment 4 of the present invention.

[0030] In the diagram: 11. Inner tank; 11a. First concentration chamber; 11b. Second concentration chamber; 11c. Third concentration chamber; 11d. Fourth concentration chamber; 11e. Water inlet; 11f. Drain outlet; 111. Water inlet pipe; 112. Main pipe; 113. First valve; 114. Second valve; 12. Outer tank; 12a. Steam chamber; 12b. Drain outlet; 2. Baffle; 21. First baffle; 22. Second baffle; 23. Third baffle; 31. Steam outlet pipe; 32. Air compressor; 33. Steam inlet pipe; 41. Rotating shaft; 411. Connecting rod; 412. Spiral plate; 42. Gear motor; 43. Scraper; 431. Side plate; 5. Spiral plate; 5a. First notch; 6. First annular plate; 6a. Second notch; 7. Second annular plate. Detailed Implementation

[0031] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0032] Example 1:

[0033] like Figure 1 and Figure 2 As shown, an MVR concentrator includes a horizontal inner tank 11 and an outer tank 12. The inner tank 11 is coaxially fixed inside the outer tank 12. A drain port 11f is provided at the bottom of the right end of the inner tank 11 for discharging the concentrated liquid. A steam chamber 12a is formed between the outer wall of the inner tank 11 and the inner wall of the outer tank 12. A drain port 12b is provided at the bottom of the right end of the outer tank 12 for discharging the condensate formed in the steam chamber 12a. The other end of the drain port 12b is connected to a water tank for collecting the condensate.

[0034] Continue to refer to Figure 1 and Figure 2 The right end of the top of the inner tank 11 is connected to a steam outlet pipe 31. An air compressor 32 is installed at the other end of the steam outlet pipe 31. The output end of the air compressor 32 is connected to a steam inlet pipe 33. The other end of the steam inlet pipe 33 is connected to the left end of the bottom of the outer tank 12. The steam generated in the inner tank 11 enters the air compressor 32 through the steam outlet pipe 31 and is compressed. The compressed steam has a higher temperature and then enters the steam chamber 12a through the steam inlet pipe 33, thereby reheating the liquid in the inner tank 11.

[0035] In order to divide the inner tank 11 into multiple liquid-containing spaces, so as to avoid the inner bottom of the inner tank 11 from being in contact with the liquid when a small amount of liquid enters, which would cause all of them to be corroded;

[0036] like Figure 2 and Figure 3 As shown, the inner tank 11 is provided with a first baffle 21, a second baffle 22, and a third baffle 23 at equal intervals. The first baffle 21, the second baffle 22, and the third baffle 23 are all semicircles with equal radii, but the areas of the first baffle 21, the second baffle 22, and the third baffle 23 gradually increase. The shape of the first baffle 21 is a small semicircle, the second baffle 22 is a semicircle, and the third baffle 23 is a large semicircle. The circumferential surfaces of the first baffle 21, the second baffle 22, and the third baffle 23 are in contact with the inner wall of the tank 1, thereby dividing the bottom of the inner tank 11 into a first concentration chamber 11a, a second concentration chamber 11b, a third concentration chamber 11c, and a fourth concentration chamber 11d. The volume of concentrated liquid contained in each concentration chamber increases from left to right.

[0037] In order to control the liquid to preferentially enter the first concentration chamber 11a;

[0038] like Figure 2As shown, four equally spaced water inlet pipes 111 are installed on the top of the inner tank 11. The four water inlet pipes 111 are located directly above the center of the four concentration chambers. When liquid needs to be discharged into the inner tank 11, the liquid enters the first concentration chamber 11a through the leftmost water inlet pipe 111. When the liquid level in the first concentration chamber 11a exceeds the first baffle 21, the liquid enters the second concentration chamber 11b through the top of the first baffle 21. When the liquid continues to be discharged and fills the second concentration chamber 11b, the liquid enters the third concentration chamber 11c through the top of the second baffle 22. The first concentration chamber 11a, the second concentration chamber 11b, the third concentration chamber 11c, and the fourth concentration chamber 11d can be filled with liquid in sequence. With this setting, when there is little liquid entering the inner tank 11, the liquid is concentrated in the first concentration chamber 11a, so that the adhering substances are concentrated on the inner wall of the first concentration chamber 11a, which facilitates centralized cleaning and reduces the corrosion area of ​​the adhering substances.

[0039] In order to control the discharge of liquid from the four inlet pipes 111 to rinse the inner wall of the inner tank 11;

[0040] like Figure 1 and Figure 2 As shown, the four inlet pipes 111 are interconnected by a main pipe 112. One end of the main pipe 112 is connected to a liquid source. The leftmost inlet pipe 111 is equipped with a first valve 113 to control its connection. When the first valve 113 is opened, the leftmost inlet pipe 111 discharges liquid into the first concentration chamber 11a. A second valve 114 is installed on the main pipe 112. The second valve 114 is located between the leftmost inlet pipe 111 and its adjacent inlet pipe 111. When both the first valve 113 and the second valve 114 are open, the four inlet pipes 111 discharge liquid into each concentration chamber, thereby flushing the inner wall of the tank 11.

[0041] In order to control the removal of deposits on the inner tank 11;

[0042] like Figure 2As shown, a rotating shaft 41 is rotatably mounted at the axis of the inner tank 11. One end of the rotating shaft 41 extends out of one end of the inner tank 11 and is fitted with a geared motor 42. The geared motor 42 is fixedly mounted on a frame (not shown in the figure). A first baffle 21, a second baffle 22, and a third baffle 23 are fixedly mounted on the rotating shaft 41. A connecting rib is fixedly connected to the first baffle 21. The centers of the first baffle 21, the second baffle 22, and the third baffle 23 are located on the axis of the rotating shaft 41. Online, a scraper 43 is connected between the bottom ends of the first baffle 21, the second baffle 22 and the third baffle 23. The two ends of the scraper 43 are in contact with the two ends of the inner tank 11. The two ends of the scraper 43 are fixedly connected with side plates 431. The scraper 43 is in contact with the inner circumferential wall of the inner tank 11. The reduction motor 42 is started to make the scraper 43 rotate around the rotating shaft 41, so that the scraper 43 and the side plates 431 move along the inner wall of the inner tank 11, thereby scraping off the adhering substances on the inner wall.

[0043] To drain the concentrated liquid after concentration;

[0044] Continue to refer to Figure 2 The side plate 431 is in contact with the inner end wall of the inner tank 11. When the first baffle 21, the second baffle 22 and the third baffle 23 are at the bottom, the side plate 431 blocks the drain port 11f. When it is necessary to discharge the concentrate, the reduction motor 42 is started to rotate the rotating shaft 41, so that the side plate 431 no longer blocks the drain port 11f, so that the concentrate is discharged through the drain port 11f. At this time, the scraper 43 blocks the water inlet pipe 111 to prevent the liquid from entering the inner tank 11 through the water inlet pipe 111 and mixing with the concentrate.

[0045] Example 2:

[0046] like Figure 4 and Figure 5 As shown, in this embodiment, based on embodiment one, a spiral plate 5 is provided inside the steam chamber 12a. The axis of the spiral plate 5 is collinear with the axis of the inner tank 11. The inner spiral edge of the spiral plate 5 is in contact with the outer circumferential surface of the inner tank 11, and the outer spiral edge of the spiral plate 5 is in contact with the inner circumferential surface of the outer tank 12. Thus, when steam enters the steam chamber 12a, the steam flows spirally around the outer circumferential surface of the inner tank 11 under the action of the spiral plate 5, thereby fully heating the liquid in the inner tank 11. The bottom end of the spiral plate 5 is provided with a first notch 5a, which is used to allow the condensate in the steam chamber 12a to flow through the first notch 5a to the drain outlet 12b.

[0047] Example 3:

[0048] like Figure 6 and Figure 7As shown, in this embodiment, based on Embodiment 1, a plurality of first annular plates 6 and a plurality of second annular plates 7 are provided in the steam chamber 12a. The outer ring of the first annular plate 6 is connected to the inner wall of the outer tank 12, and the inner ring of the first annular plate 6 has a certain gap with the outer wall of the inner tank 11. The outer ring of the second annular plate 7 has a certain gap with the inner wall of the outer tank 12, and the second annular plate 7 is connected to the outer wall of the inner tank 11. The first annular plates 6 and the second annular plates 7 are staggered, so that when steam enters the steam chamber 12a, it passes through the gap between the first annular plate 6 and the inner tank 11, and then through the gap between the second annular plate 7 and the outer tank 12, thereby fully heating the liquid in the inner tank 11. The bottom end of the first annular plate 6 is provided with a second notch 6a, which is used to allow the condensate in the steam chamber 12a to flow through the second notch 6a to the drain outlet 12b.

[0049] Example 4:

[0050] like Figure 8 and Figure 9 As shown, in this embodiment, based on the above three embodiments (spiral plate 5, first annular plate 6 and second annular plate 7 are not shown), four connecting rods 411 are fixedly installed on the rotating shaft 41. A spiral plate 412 is fixedly installed at the end of each of the four connecting rods 411 away from the rotating shaft 41. The outer spiral edge of the spiral plate 412 contacts the inner circumferential wall of the inner tank 11. The movement ranges of two adjacent spiral plates 412 overlap. When it is necessary to discharge the concentrated liquid, the spiral plate 412 rotates along the inner circumferential wall of the inner tank 11, thereby pushing the concentrated liquid in the inner tank 11 towards the discharge port 11f.

[0051] The present invention also provides a concentrated liquid incineration treatment system, including an incinerator and an MVR concentrator of any of the above embodiments, wherein the concentrated liquid produced by the MVR concentrator is sprayed into the incinerator for incineration through a spray device.

Claims

1. An MVR concentrator, characterized in that, include: The inner and outer tanks are cylindrical and horizontally arranged. The inner tank is coaxially installed inside the outer tank. A water inlet is located at the left end of the top of the inner tank. There are at least two baffles, which are semicircles of the same diameter and gradually increase in height from left to right. The circumferential surface of the baffles contacts part of the inner circumferential wall of the inner tank, dividing the inner tank into multiple concentration chambers. When discharging liquid, the liquid exits from the water inlet and first enters the leftmost concentration chamber. After the leftmost concentration chamber is full of liquid, the liquid overflows the baffle and enters the adjacent concentration chamber. At least three water inlet pipes are evenly spaced on the top of the inner tank, with one water inlet pipe corresponding to one concentration chamber. The water inlet is connected to the leftmost water inlet pipe, and a valve for controlling the liquid discharge is installed on the water inlet pipe. The scraper is connected to the bottom of the baffle and contacts the inner circumferential wall of the inner tank. Both ends of the scraper are connected to side plates, which contact the inner side wall of the inner tank. The rotating device is used to control the baffle, scraper and side plate to rotate around the axis of the inner tank, so that the bottom of multiple concentration chambers are connected to each other, and the scraper scrapes off the concentrated liquid adhering to the inner tank wall of the inner tank. A drain port is provided at the bottom right end of the inner tank. When the baffle is at the bottom of the inner tank, the side plate blocks the drain port, preventing the liquid inside the inner tank from passing through the drain port. When the baffle is rotated upward, the side plate no longer blocks the drain port, and the liquid inside the inner tank can pass through the drain port. The scraper blocks the water inlet pipe, preventing the liquid from entering the inner tank through the water inlet pipe and mixing with the concentrate.

2. The MVR concentrator according to claim 1, characterized in that, A steam chamber is formed between the outer wall of the inner tank and the inner wall of the outer tank. A steam outlet pipe is connected to the right end of the top of the inner tank, and a steam inlet pipe is connected to the left end of the bottom of the outer tank. A drain outlet is provided at the bottom of the right end of the outer tank.

3. The MVR concentrator according to claim 2, characterized in that, The steam chamber is equipped with a spiral plate, the axis of which is collinear with the axis of the inner tank. The inner spiral edge of the spiral plate contacts the outer circumferential surface of the inner tank, and the outer spiral edge of the spiral plate contacts the inner circumferential surface of the outer tank, thereby causing the steam to flow in a spiral pattern within the steam chamber.

4. The MVR concentrator according to claim 3, characterized in that, The bottom end of the spiral plate is provided with a first notch, which is used to allow the condensate in the steam chamber to flow through the first notch to the drain outlet.

5. The MVR concentrator according to claim 2, characterized in that, The steam chamber is provided with multiple first annular plates and multiple second annular plates arranged alternately. The outer ring of the first annular plate is connected to the inner wall of the outer tank, and there is a certain gap between the inner ring of the first annular plate and the outer wall of the inner tank. The outer ring of the second annular plate is also connected to the outer wall of the inner tank.

6. The MVR concentrator according to claim 5, characterized in that, The bottom end of the first annular plate is provided with a second notch, which is used to allow the condensate in the steam chamber to flow through the second notch to the drain outlet.

7. The MVR concentrator according to any one of claims 1-6, characterized in that, A rotating shaft is rotatably mounted on the axis of the inner tank. A baffle is fixedly mounted on the rotating shaft. A rotating device is used to control the rotation of the rotating shaft. At least two connecting rods are fixedly mounted. A spiral plate is mounted on the end of the connecting rod away from the rotating shaft. The outer spiral edge of the spiral plate contacts the inner circumferential wall of the inner tank. The movement ranges of two adjacent spiral plates overlap.

8. A concentrated liquid incineration treatment system, characterized in that, It includes an incinerator and an MVR concentrator as described in any one of claims 1-7, wherein the concentrated liquid produced by the MVR concentrator is sprayed into the incinerator for incineration via a spray device.

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