Equipment for recovering potassium chloride in seaweed

Abstract

The utility model relates to the field of potassium chloride collection, in particular to equipment for recovering potassium chloride in seaweed, which comprises a drum screen, a shredder, a belt dryer, a vibrating screen, a disc screen, a salt tank, a plate filter and a turnover tank. Seaweed particles on the vibrating screen are conveyed into the disc screen through a ton bag, the salt tank, the plate filter and the turnover tank are connected through pipelines, impurities in raw material seaweeds are separated through the rotary screen, the seaweeds are shredded into the seaweed particles through the shredding machine, the seaweed particles are dried through the belt dryer, and the dried seaweed particles are subjected to impurity removal through the vibrating screen. The disc screen removes impurities of the seaweed particles again, auxiliaries added through the feeding pipe are mixed in the salt tank and then are pumped into the plate filter, a filter layer is formed in the plate filter, the plate filter extracts a solution which is 1 / 4 away from the upper portion of the bottom of the salt tank to be filtered, and the turnover tank collects the filtered potassium chloride salt solution.

Description

Technical Field

[0001] This utility model relates to the field of potassium chloride collection, and specifically to a potassium chloride recovery device from seaweed. Background Technology

[0002] The raw material used in carrageenan production (Euphorbia lactea) is mainly cotton seaweed. Because cotton seaweed accumulates salt during its growth in the ocean, it contains approximately 20% salt. Analysis of seaweed quality testing data shows that potassium salts account for over 80% of the total salt content, primarily potassium chloride. Potassium chloride is an indispensable auxiliary agent in carrageenan production. For a long time, the carrageenan industry has washed raw materials like cotton seaweed to obtain a white product. This wastewater discharge, containing large amounts of salt, not only wastes potassium chloride and other salt resources but also pollutes the environment.

[0003] Therefore, in order to overcome the shortcomings of existing technologies, it is necessary to design a simple potassium chloride recovery device from seaweed. Utility Model Content

[0004] This invention provides a potassium chloride recovery device from seaweed to address the problems of existing technologies.

[0005] The objective of this utility model can be achieved through the following technical solution: A potassium chloride recovery device from seaweed includes: a drum screen, a shredder, a belt dryer, a vibrating screen, a disc screen, a salt tank, a plate filter, and a transfer tank. The drum screen, shredder, belt dryer, and vibrating screen are all connected by a conveying device. Seaweed particles on the vibrating screen are conveyed to the disc screen through a ton bag. The salt tank, plate filter, and transfer tank are connected by pipelines. The drum screen separates impurities from the raw seaweed. The shredder shreds the seaweed into seaweed particles. The belt dryer dries the seaweed particles. The vibrating screen removes impurities from the dried seaweed particles. The disc screen removes impurities from the seaweed particles again. The salt tank is equipped with a water inlet pipe and a feeding pipe. The additives added through the feeding pipe are mixed in the salt tank and then pumped into the plate filter to form a filter layer inside the plate filter. The plate filter extracts the solution from the bottom of the salt tank, one-quarter of the way from the top, for filtration. The transfer tank collects the filtered potassium chloride solution.

[0006] As a further improvement, a cyclone sand separator is provided between the plate filter and the transfer tank.

[0007] A further improvement is that the mesh size of the disc screen is 20 mesh.

[0008] As a further improvement, the belt dryer is equipped with a temperature controller and a time controller.

[0009] As a further improvement, the bottom of the turnover tank is provided with a sludge outlet, and the bottom of the salt tank is provided with a drain outlet.

[0010] Compared with existing technologies, the beneficial effects of this novel potassium chloride recovery device from seaweed are as follows:

[0011] After vibrating sieving, seaweed and salt sand are completely separated. The separated salt sand is then dissolved, precipitated, and filtered to prepare a colorless and transparent salt solution with a potassium salt content of over 80%. This solution can be used in the seaweed washing process during carrageenan production to control the loss of carrageenan, saving processing costs and reducing the difficulty and cost of wastewater treatment. The extracted potassium chloride solution can reduce the loss of carrageenan during seaweed processing, improve the colloid extraction rate, and experimental verification shows that the extracted potassium chloride solution has no impact on the quality of carrageenan production. Meanwhile, the filtered silt can be collected and used as agricultural fertilizer, alleviating sewage discharge pressure and saving wastewater treatment costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention.

[0013] In the diagram, 1-drum screen, 2-shredder, 3-belt dryer, 31-temperature controller, 32-time controller, 4-vibrating screen, 5-disc screen, 6-salt tank, 61-water inlet pipe, 62-feeding pipe, 63-drain outlet, 7-plate filter, 71-filter layer, 8-transfer tank, 81-sewage outlet, 9-cyclone sand separator, 10-conveyor. Detailed Implementation

[0014] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] The following describes the embodiments and appendices. Figure 1 The technical solution of this utility model will be further described below.

[0017] Example 1

[0018] A potassium chloride recovery device from seaweed includes: a drum screen 1, a shredder 2, a belt dryer 3, a vibrating screen 4, a disc screen 5, a salt tank 6, a plate filter 7, and a transfer tank 8. The drum screen 1, shredder 2, belt dryer 3, and vibrating screen 4 are all connected by a conveying device 10. Seaweed particles on the vibrating screen 4 are conveyed to the disc screen 5 via a ton bag. The salt tank 6, plate filter 7, and transfer tank 8 are connected by pipelines. The drum screen 1 separates impurities from the raw seaweed, and the shredder 2 shreds the seaweed. The seaweed is crushed into particles. The belt dryer 3 dries the seaweed particles. The vibrating screen 4 removes impurities from the dried seaweed particles. The disc screen 5 removes impurities from the seaweed particles again. The salt tank 6 is equipped with a water inlet pipe 61 and a feeding pipe 62. The additives added through the feeding pipe 62 are mixed in the salt tank 6 and then pumped into the plate filter 7, forming a filter layer 71 inside the plate filter 7. The plate filter 7 extracts the solution from the bottom of the salt tank 6, one-quarter of the way from the top, for filtration. The transfer tank 8 collects the filtered potassium chloride solution.

[0019] As a further preferred embodiment, a cyclone sand separator 9 is provided between the plate filter 7 and the turnover tank 8.

[0020] As a further preferred embodiment, the disc sieve 5 has a mesh size of 20.

[0021] As a further preferred embodiment, the belt dryer 3 is equipped with a temperature controller 31 and a time controller 32.

[0022] As a further preferred embodiment, the bottom of the turnover tank 8 is provided with a drain outlet 81, and the bottom of the salt tank 6 is provided with a drain outlet 63.

[0023] like Figure 1 As shown, the working principle of this utility model is as follows:

[0024] (1) After the seaweed is unpacked, it is conveyed to the drum screen 1 by the conveyor belt. The conveying speed of the conveyor belt is controlled. The amount of seaweed processed by the drum screen 1 per hour is 0.5t-1.5t. Large pieces of salt and sand and impurities are removed. The discharge port is connected to a ton bag to collect the filtered salt and sand and impurities.

[0025] (2) After being screened by drum screen 1, the seaweed is conveyed to shredder 2 by conveyor belt and shredded into seaweed particles of 5-20 mesh.

[0026] (3) Then it is conveyed to the belt dryer 3 by the conveyor belt, heated by steam, and the drying temperature is controlled at 110℃-150℃ by the temperature controller 31, and the drying time is controlled at 30min-60min by the time controller 32.

[0027] (4) Then it is conveyed to the vibrating screen 4 by the conveyor belt. The conveying speed of the conveyor belt is controlled. The amount of seaweed particles processed by the vibrating screen 4 per hour is 0.5t-1.5t. Remove fine mud and sand impurities. The discharge port is connected to a ton bag to collect the filtered salt and sand impurities.

[0028] (5) The salt sand and impurities obtained from drying and sieving are transported to disc screen 5 through ton bags. The salt sand and impurities enter disc screen 5 from the upper feeding port through the overhead crane. The broken seaweed and large impurities are screened out using a 20-mesh screen. The processing capacity is 0.25t-0.5t / h, and finally pure (potassium chloride) seaweed salt sand is obtained.

[0029] (6) Add about 2.5 tons of water to the salt tank 6 through the water inlet pipe 61, and add 40 kg of filter aid (perlite or plant fiber) to the salt tank 6 through the feed pipe 62. After stirring and mixing, pump the mixture into the plate filter 7. The water will filter out the water and leave the formed filter layer 71 in the plate filter 7. The pre-coating is now complete.

[0030] (7) Add about 700 kg of cleaned seaweed salt and 10 ppm of water quality disinfectant to salt tank 6, stir for 10 minutes, let it settle for 1 hour, and pump the salt tank 6 to a position one-quarter of the way from the bottom into plate filter 7. The filtered potassium chloride solution is further separated by hydrocyclone sand separator 9 to obtain a clean and clear potassium chloride solution, which is stored in turnover tank 8.

[0031] (8) After filtration, the sludge is discharged from the bottom of the transfer tank 8 through the drain port 81 and then collected.

[0032] (9) The obtained clean potassium chloride solution is prepared for subsequent production.

[0033] Table 1. Results of the impact of the examples on carrageenan quality.

[0034]

[0035] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A potassium chloride recovery device from seaweed, characterized in that, It includes: The drum screen, shredder, belt dryer, vibrating screen, disc screen, salt tank, plate filter and turnover tank are connected by conveying device, the seaweed particles on the vibrating screen are transported to the disc screen by ton bag, the salt tank, plate filter and turnover tank are connected by pipeline, the drum screen separates impurities in raw seaweed, the shredder tears seaweed into seaweed particles, the belt dryer dries seaweed particles, the vibrating screen removes impurities from dried seaweed particles, the disc screen removes impurities from seaweed particles again, the salt tank is provided with a water inlet pipe and a feeding pipe, the additives added through the feeding pipe are mixed in the salt tank and then punched into the plate filter to form a filter layer inside the plate filter, the plate filter extracts the solution at one fourth of the bottom from the top of the salt tank for filtration, and the turnover tank collects the filtered potassium chloride salt solution.

2. A device for recovering potassium chloride from seaweed according to claim 1, characterized in that, A cyclone desander is arranged between the plate filter and the turnover tank.

3. The apparatus for recovering potassium chloride from seaweed according to claim 1, wherein The mesh number of the disc screen screen is 20.

4. The apparatus for recovering potassium chloride from seaweed according to claim 1, wherein The belt dryer is provided with a temperature controller and a time controller.

5. The apparatus for recovering potassium chloride from seaweed according to claim 1, wherein The bottom of the turnover tank is provided with a blowdown outlet, and the bottom of the salt tank is provided with a drain outlet.

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