A kind of metatitanic acid cooling device

Abstract

The invention discloses a titanic acid cooling device, which is characterized by comprising a titanic acid circulation tank, the titanic acid circulation tank is provided with a circulation acid pump, which is used for circulating the acid liquid in the titanic acid circulation tank into a titanic acid cooler, the other end output port of the titanic acid cooler is connected with a lower-level process acid storage tank and the titanic acid circulation tank, the output end of the titanic acid cooler is provided with an acid liquid temperature detection control device, which is used for controlling the acid liquid output from the titanic acid cooler to enter the lower-level process acid storage tank or the titanic acid circulation tank; the cooling device of the invention is provided with a cooler with a high-frequency ultrasonic vibrator, an inclined acid liquid pipeline, a reverse coolant flow channel, etc., and the high-frequency vibration can reduce the acid liquid crystallization adhering to the pipe wall, and the inclined pipe further avoids the crystallization sedimentation and accumulation in the pipe; the reverse coolant flow direction reduces the temperature difference, avoids the damage of the acid liquid pipe caused by the violent cold and hot reaction due to the excessive temperature difference, and the cooling effect is better and more obvious.

Description

Technical Field

[0001] The invention relates to the technical field of acid cooling equipment, and in particular to a metatitanic acid cooling device. Background Art

[0002] Due to the special nature of the material of metatitanic acid, when it is cooled by a metatitanic acid cooler, the core parts are prone to precipitation blockage. The source of the blockage is that the material in the metatitanic acid adheres to the crystals on the tube wall and blocks the channel. Therefore, due to the structural limitations of the traditional metatitanic acid cooling device, especially the metatitanic acid cooler mainly used for cooling, the heat exchanger generally needs to be disassembled and cleaned every 15 days, and the blocked holes of the heat exchange tubes and nets are usually cleared manually. Therefore, it is very easy to break through the wall near the blocked hole, causing leakage of the metatitanic acid cooler; even if the wall is not broken, the sealing surface will be damaged due to frequent disassembly and cleaning, resulting in leakage and shortening the service life of the equipment; even if the wall is not broken and the sealing surface is not damaged, the frequent parking and disassembly increase the production cost and bring inconvenience to production. In the prior art, high-pressure gas is also used for flushing. Due to the high pressure of the high-pressure gas, a lot of noise will be emitted during flushing, and the cleaning is very troublesome and inefficient. Therefore, the maintenance cycle is extended, the service life of the product is improved, and unnecessary work is reduced. Summary of the invention

[0003] In view of the prior art, the purpose of the present invention is to provide a cooling device for titanic acid, which can significantly extend the maintenance period of the cooler, increase the service life of the cooler, and has good applicability.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is: a titanic acid cooling device, characterized in that: it includes a titanic acid circulation tank, the titanic acid circulation tank is provided with a circulating acid pump, which is used to circulate the acid liquid in the titanic acid circulation tank into the titanic acid cooler, the other end output port of the titanic acid cooler is connected to the acid storage tank of the lower process and the titanic acid circulation tank, and the output end of the titanic acid cooler is provided with an acid liquid temperature detection control device, which is used to control the acid liquid output from the titanic acid cooler to enter the acid storage tank of the lower process or the titanic acid circulation tank.

[0005] As a further configuration of the above scheme, the titanate cooler includes a cooler tube body, the cooler tube body is arranged in an inclined state, and an acid liquid inlet is arranged at a higher position relative to the cooler tube body, and an acid liquid outlet is arranged at a lower position relative to the cooler tube body. The acid liquid outlet is arranged at the lowest point of the cooler tube body, and the acid liquid inlet and the acid liquid outlet are connected by a number of inclined heat exchange tubes.

[0006] As a further configuration of the above scheme, a plurality of baffles are further arranged in the cooler tube body. The baffles are arranged in a spiral step shape in the cooler tube body, and the heat exchange tubes are arranged through the baffles.

[0007] As a further configuration of the above scheme, the acid liquid inlet and the acid liquid outlet are isolated from the cooler tube body by a tube sheet, and a plurality of ultrasonic vibrators are also arranged on the tube sheet. The ultrasonic vibrators are also covered with a rainproof cover, and the heat exchange tube is fixedly connected to the tube sheet.

[0008] As a further configuration of the above solution, a coolant inlet and a coolant outlet are further provided on the cooler tube body, wherein the coolant inlet is located at a lower part of the cooler tube body, and the coolant outlet is located at a higher part of the cooler tube body.

[0009] As a further configuration of the above scheme, the acid liquid outlet is also provided with a filtering device, which is relatively connected in parallel to the rear pipe of the titanic acid cooler, and includes a detachable filter element and a temperature sensor. The temperature sensor is connected to the acid liquid temperature detection and control device, and the filter element is used to filter the acid liquid output from the titanic acid cooler.

[0010] As a further configuration of the above scheme, a rotary sedimentation device is also provided on the filtering device, and the rotary sedimentation device includes a brush plate for scrubbing crystals trapped on the filter element, a spiral impeller and a sedimentation box arranged below the filter element, and the impeller is coaxially fixed with the brush plate.

[0011] As a further configuration of the above scheme, sealing valve structures are also provided at both ends of the filter device connected to the lower pipeline and the acid outlet, and the sealing valve structure is used for pipeline sealing during the process of replacing the filter element of the filter device.

[0012] As a further configuration of the above scheme, the sealing valve structure includes a valve ball arranged in the pipeline, a spline rod fixedly connected to the valve ball, a rotating handle arranged outside the filtering device, a spline shaft and several gear structures for driving the valve ball to be set by rotating the handle, and the spline shaft and the spline rod are matched with each other for transmission.

[0013] Beneficial effect: The cooling device of the present invention applies the cooler proposed in the present invention, and the target acid liquid is circulated into the cooler by setting a circulating acid pump, and the acid liquid is cooled by heat exchange by setting a circulating water tower, so that the acid liquid can be quickly cooled to a suitable temperature. Among them, the cooler has a variety of special settings, including the cooler setting an acid liquid circulation pipe inclined from top to bottom from the acid liquid inlet direction, and the acid liquid circulation pipe is set on a high-frequency ultrasonic vibrator. Secondly, a baffle is set in the cooler, and the coolant acid liquid pipeline outlet direction is to the acid liquid inlet direction, and the cooling is entered and exited from bottom to top. The device has the following advantages: first, high-frequency vibration can reduce the crystallization adhesion to the tube wall during the acid cooling process, and the inclined tube can further prevent the crystal from settling and accumulating in the pipeline; second, the baffle can allow the coolant to fully contact the outer wall of the acid flow tube for heat exchange, and the circulation design opposite to the acid minimizes the temperature difference between the two, avoiding the damage of the acid tube caused by the violent cold and hot reaction due to excessive cold and hot differences; secondly, the coolant temperature in the direction of the acid outlet is the lowest, so that the final acid outlet is closest to the temperature of the coolant entering, and the cooling effect is better and more obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the titanic acid cooling device of the present invention.

[0015] Figure 2 This is a schematic diagram of the structure of the titanate cooler in this embodiment.

[0016] Figure 3 Schematic diagram of the tube sheet structure of this embodiment.

[0017] Figure 4 Schematic diagram of the structure of the filtering device of this embodiment.

[0018] Figure numerals: 1. titanic acid circulation tank; 2. circulating acid pump; 3. titanic acid cooler; 31. cooler tube body; 32. acid liquid inlet; 33. acid liquid outlet; 34. heat exchange tube; 35. tube sheet; 36. ultrasonic vibrator; 361. rain cover; 37. coolant inlet; 38. coolant outlet; 39. baffle; 4. filter device; 41. filter element; 42. temperature sensor; 43. valve ball; 44. spline rod; 45. rotating handle; 46. spline shaft; 49. sedimentation box; 5. rotary sedimentation device; 6. sealing valve structure. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0020] Example 1: Figure 1-3 A titanate cooling device is shown, characterized in that it includes a titanate circulation tank 1, the titanate circulation tank 1 is provided with a circulating acid pump 2, which is used to circulate the acid liquid in the titanate circulation tank 1 into the titanate cooler 3, the other end output port of the titanate cooler 3 is connected to the lower process acid storage tank and the titanate circulation tank 1, the output end of the titanate cooler 3 is provided with an acid liquid temperature detection control device, which is used to control the acid liquid output from the titanate cooler 3 to enter the lower process acid storage tank or the titanate circulation tank 1, through the above-mentioned setting, the device circulates and cools the acid liquid, and the acid liquid with too high temperature is sent to the titanate cooler 3 for cooling through the circulating acid pump 2, and the temperature of the cooled acid liquid is monitored and fed back by setting the temperature detection control device.

[0021] The present invention is further arranged on the basis of the above, that is, the titanate cooler 3 includes a cooler tube body 31, the cooler tube body 31 is arranged in an inclined state, and an acid liquid inlet 32 ​​is arranged at a higher position relative to the cooler tube body 31, and an acid liquid outlet 33 is arranged at a lower position relative to the cooler tube body 31, and the acid liquid outlet 33 is arranged at the lowest point of the cooler tube body 31, and the acid liquid inlet 32 ​​and the acid liquid outlet 33 are connected by a plurality of inclined heat exchange tubes 34, which are arranged so that the acid liquid circulation pipeline is inclined, and the crystals generated during the cooling of the acid liquid will settle out of the cooler based on the influence of gravity and water flow, and will not crystallize on the heat exchange tubes 34 in the cooler, thereby avoiding the occurrence of blockage.

[0022] As a further arrangement of the above scheme, a plurality of baffles 39 are further arranged in the cooler tube body 31. The baffles 39 are arranged in a spiral step shape in the cooler tube body 31. The heat exchange tube 34 passes through the baffles 39. Through the baffles 39 arranged as above, the coolant is in a disordered turbulent state in the cooler tube body 31. The coolant in this state will cause relatively hot or icy coolants to mix with each other, so that the coolant in contact with the heat exchange tube 34 is mixed, and the heat exchange is more sufficient.

[0023] As a further arrangement of the above scheme, the acid liquid inlet 32 ​​and the acid liquid outlet 33 are isolated from the cooler tube body 31 by a tube sheet 35, and a plurality of ultrasonic vibrators 36 are also arranged on the tube sheet 35, and the ultrasonic vibrators 36 are also covered with a rain cover 361. The heat exchange tube 34 is fixedly connected to the tube sheet 35. Through the arrangement of the above scheme, the ultrasonic vibrator 36 can keep the heat exchange tube 34 in a state of high-frequency vibration. In this state, the crystals of the heat exchange tube 34 cannot condense well on the tube wall, which effectively prevents the problem of crystals adhering to the closure to form blockage.

[0024] As a further configuration of the above scheme, a coolant inlet 37 and a coolant outlet 38 are further provided on the cooler tube body 31. The coolant inlet 37 is located at a low point of the cooler tube body 31, and the coolant outlet 38 is located at a high point of the cooler tube body 31. The inlet and outlet of the coolant are opposite to the inlet and outlet of the medium to be cooled. Through this design, the coolant with the lowest temperature contacts the cooled medium to be cooled, and the coolant heated by the medium to be cooled contacts the medium to be cooled with the highest temperature. This design makes the temperature difference between the coolant and the medium to be cooled relatively small, and the coldest coolant is located at the outlet of the medium to be cooled, which also makes the cooling effect optimal.

[0025] Example 2: Figure 4 As shown in the above structure, the acid liquid outlet 33 of the cooling device of the present invention is also provided with a filtering device 4, and the filtering device 4 is relatively connected in parallel to the rear pipe of the titanic acid cooler 3, and includes a detachable filter element 41 and a temperature sensor 42. The temperature sensor 42 is connected to the acid liquid temperature detection and control device, and the filter element 41 is used to filter the acid liquid output from the titanic acid cooler 3. In the titanic acid cooling process, the filtering device 4 is set to standby, and the parallel pipe is opened directly by closing the filtering device 4. Therefore, the setting of the filtering device 4 of this embodiment can recover the titanium dioxide particle raw material during online cleaning, thereby reducing the production loss of titanium dioxide.

[0026] As a further configuration of the above scheme, a rotary sedimentation device 5 is also provided on the filtering device 4, and the rotary sedimentation device 5 includes a brush plate for scrubbing crystals trapped on the filter element 41, a spiral impeller, and a sedimentation box 49 arranged below the filter element 41, and the impeller is coaxially fixed with the brush plate.

[0027] As a further configuration of the above scheme, sealing valve structures 6 are further provided at both ends of the filter device 4 connected to the lower pipeline and the acid liquid outlet 33 , and the sealing valve structure 6 is used for pipeline sealing during the process of replacing the filter element 41 of the filter device 4 .

[0028] As a further configuration of the above scheme, the sealing valve structure 6 includes a valve ball 43 arranged in the pipeline, a spline rod 44 fixedly connected to the valve ball 43, and a rotating handle 45 exposed outside the filter device 4, and the rotating handle 45 is used to drive a spline shaft 46 and a plurality of gear structures set on the valve ball 43, and the spline shaft 46 is matched with the spline rod 44 for transmission.

[0029] As described in the above scheme of Example 2, when the cooling device is used for acid liquid without particles or crystals, based on the design of the filter device 4, the high-frequency vibration and inclined design of the titanic acid cooler 3 are targeted, so a large amount of crystals produced by temperature changes will flow out along the acid liquid. Therefore, the filter device 4 will have a more frequent maintenance cycle compared to the prior art. A convenient replacement and cleaning filter element and the internal filter device 4 are very necessary. The filter device 4 with a spare design of the present invention only needs to rotate the rotating handle 45 on the top through the gear cooperation of the spline rod 44 and the spline shaft 46, and the valve ball 43 produces a rotating closed pipe at both ends. The staff can easily remove the part where the filter element is located, and then it can be maintained, cleaned or replaced. After cleaning, the reverse operation can be performed to continue to use it, which is very convenient. This structure can minimize the consumption of titanium dioxide raw materials with a unit price of 10,000 to 20,000 yuan per ton in the current market, save resources, and reduce unnecessary cost expenditures.

[0030] The cooling device of the present invention applies the cooler proposed in the present invention, and the target acid liquid is circulated into the cooler by setting a circulating acid pump, and the acid liquid is heat exchanged and cooled by setting a circulating water tower, so that the acid liquid can be quickly cooled to a suitable temperature. Among them, the cooler has a variety of special settings, including the cooler is inclined from top to bottom from the acid liquid inlet direction to set the acid liquid flow pipe, and the acid liquid flow pipe is set on a high-frequency ultrasonic vibrator, and secondly, a baffle is set in the cooler, and the coolant acid liquid pipeline outlet direction to the acid liquid inlet direction, enters and exits the cooler from bottom to top, This design has the following advantages: first, high-frequency vibration can reduce the adhesion of crystals to the tube wall during the acid cooling process, and tilting the tube can further prevent crystals from settling and accumulating in the tube; second, the baffle can allow the coolant to fully contact the outer wall of the acid flow tube for heat exchange, and the circulation design opposite to the acid minimizes the temperature difference between the two, avoiding damage to the acid tube due to violent cold and hot reactions caused by excessive cold and hot differences; secondly, the coolant temperature in the direction of the acid outlet is the lowest, so that the final acid outlet is closest to the temperature of the coolant entering, and the cooling effect is better and more obvious.

[0031] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A titanic acid cooling device, characterized in that: The invention comprises a titanate circulation tank (1), wherein the titanate circulation tank (1) is provided with a circulating acid pump (2) for circulating the acid liquid in the titanate circulation tank (1) into a titanate cooler (3), wherein the output port at the other end of the titanate cooler (3) is connected to the acid storage tank of the next process and the titanate circulation tank (1), wherein the output end of the titanate cooler (3) is provided with an acid liquid temperature detection and control device for controlling the acid liquid output from the titanate cooler (3) to enter the acid storage tank of the next process or the titanate circulation tank (1), wherein the titanate cooler (3) comprises a cooler tube body (31), wherein the cooler tube body (31) is arranged in an inclined shape, wherein an acid liquid inlet (32) is arranged at a higher position relative to the cooler tube body (31), and an acid liquid outlet (33) is arranged at a lower position relative to the cooler tube body (31). The acid liquid outlet (33) is arranged at the lowest point of the cooler tube body (31); the acid liquid inlet (32) and the acid liquid outlet (33) are connected by a plurality of inclined heat exchange tubes (34); a plurality of baffles (39) are arranged in the cooler tube body (31) in a spiral step-like manner; the heat exchange tubes (34) penetrate the baffles (39); the acid liquid inlet (32) and the acid liquid outlet (33) are isolated from the cooler tube body (31) by a tube sheet (35); a plurality of ultrasonic vibrators (36) are arranged on the tube sheet (35); the ultrasonic vibrators (36) are also covered with a rain cover (361); the heat exchange tubes (34) are fixedly connected to the tube sheet (35); The acid liquid outlet (33) is also provided with a filtering device (4), the filtering device (4) being relatively connected in parallel to the rear pipeline of the metatitanic acid cooler (3), and comprising a detachable filter element (41) and a temperature sensor (42), the temperature sensor (42) being connected to the acid liquid temperature detection control device, and the filter element (41) being used to filter the acid liquid output from the metatitanic acid cooler (3).

2. A titanic acid cooling device according to claim 1, characterized in that: The cooler tube body (31) is also provided with a coolant inlet (37) and a coolant outlet (38); the coolant inlet (37) is located at a lower part of the cooler tube body (31), and the coolant outlet (38) is located at a higher part of the cooler tube body (31).

3. A titanic acid cooling device according to claim 1, characterized in that: The filtering device (4) is also provided with a rotary sedimentation device (5), the rotary sedimentation device (5) comprising a brush plate for brushing crystals trapped on the filter element (41), a spiral impeller, and a sedimentation box (49) arranged below the filter element (41), the impeller being coaxially fixedly arranged with the brush plate.

4. A metatitanic acid cooling device according to claim 1 or 3, characterized in that: Sealing valve structures (6) are also provided at both ends of the filter device (4) connected to the lower pipeline and the acid liquid outlet (33). The sealing valve structure (6) is used for sealing the pipeline during the process of replacing the filter element (41) of the filter device (4).

5. A titanic acid cooling device according to claim 4, characterized in that: The sealing valve structure (6) comprises a valve ball (43) disposed in the pipeline, a spline rod (44) fixedly connected to the valve ball (43), and a rotating handle (45) disposed outside the filtering device (4), the rotating handle (45) being used to drive a spline shaft (46) disposed on the valve ball (43) and a plurality of gear structures, wherein the spline shaft (46) and the spline rod (44) are matched with each other in a transmission arrangement.

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