Precipitated barium sulfate preparation system
By designing a precipitated barium sulfate preparation system including buffer tanks, microchannel reactors, diaphragm reactors and crystallizers, the problem of sulfate ions in bitter brine wastewater is not effectively extracted, and high-efficiency and low-cost sulfuric acid is achieved The barium precipitation process simplifies the process flow and improves the reaction efficiency.
Patent Information
- Application Number
- CN202420520940.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-18
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-03-18
AI Technical Summary
The prior art is difficult to effectively extract sulfate ions from the salt lake bitter brine wastewater to prepare precipitated barium sulfate. The process control and process are complex, resulting in the failure of effective recycling of resources.
A precipitated barium sulfate preparation system including buffer tanks, microchannel reactors, diaphragm reactors and crystallizers was designed to replace traditional reaction equipment by automatic backwashing of surface filters, microchannel reactors, diaphragm reactors and crystallizers. Ultrasonic devices and multi-layer filters are used to achieve sufficient reaction and precipitation, shortening process flow and time.
The resource reuse of bitter brine wastewater has been realized, and industrial-grade precipitated barium sulfate is produced. The process is simple, efficient, low cost, sufficient reaction, and can quickly produce industrial-grade products.
Smart Images
Figure CN222240204U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of salt lake bittern wastewater treatment, in particular to a precipitated barium sulfate preparation system. Background Art
[0002] Brine is the wastewater produced after salt production in salt lakes. It is rich in potassium, bromine, magnesium, calcium, sulfate and other ions. After recycling the brine, some widely used chemical raw materials can be extracted.
[0003] At present, potassium salt and magnesium salt, such as potassium chloride, potassium sulfate, magnesium chloride and other salt products, have been extracted from bittern wastewater, but other ions in bittern wastewater, such as sulfate, bromine, calcium, etc., have not been effectively extracted and recovered. There are a large number of sulfate ions in bittern, second only to potassium ions and magnesium ions. Only a few processes use sulfate ions in bittern to precipitate barium sulfate, and process control and process flow are also difficult issues.
[0004] In order to solve the above problems, we have made improvements and proposed a precipitated barium sulfate preparation system. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:
[0006] The utility model provides a precipitated barium sulfate preparation system, comprising a buffer tank, wherein an inlet pump and a first surface filter are arranged outside the buffer tank, the outlet of the inlet pump is communicated with the inlet of the first surface filter, the clear liquid port of the first surface filter is connected with a microchannel reactor, the inlet of the microchannel reactor is connected with a barium chloride solution tank, the liquid outlet of the microchannel reactor is connected with a diaphragm reactor, the liquid outlet of the diaphragm reactor is communicated with the inlet of a second surface filter, an infusion pump and a crystallizer are connected between the diaphragm reactor and the second surface filter, the second surface filter is externally communicated with a plate-frame filter press, and the plate-frame filter press is externally connected with a washing tank and a drying device.
[0007] As a preferred technical solution of the utility model, the slag discharge port of the first surface filter is connected to the buffer tank, the first surface filter is connected to the liquid inlet of the microchannel reactor, and a funnel-shaped filter cloth with several small holes is installed at the bottom of the microchannel reactor.
[0008] As a preferred technical solution of the utility model, a film with a flow-guiding structure is installed inside the diaphragm reactor, and a plurality of holes of 1-2 mm are opened on the film.
[0009] As a preferred technical solution of the utility model, the liquid inlet of the infusion pump is connected to the liquid outlet of the diaphragm reactor, the liquid outlet of the infusion pump is connected to the liquid inlet of the crystallizer, the liquid outlet of the crystallizer is connected to the liquid inlet of the second surface filter, and an ultrasonic device is installed inside the crystallizer.
[0010] As a preferred technical solution of the utility model, the clear liquid port of the second surface filter is connected to the buffer tank, the slag discharge port of the second surface filter is connected to the slag slurry tank, and the outlet of the slag slurry tank is connected to the liquid inlet of the plate and frame filter press.
[0011] As a preferred technical solution of the utility model, the outlet of the plate and frame filter press is connected to the interior of the buffer tank, the slag discharge port of the plate and frame filter press is connected to the washing tank, and the liquid outlet of the washing tank is connected to the interior of the drying device.
[0012] The beneficial effects of the utility model are as follows: the precipitated barium sulfate preparation system can produce precipitated barium sulfate after reaction treatment of bittern wastewater through the treatment system provided by the system, thereby realizing the resource reuse of bittern wastewater, and the whole system is reasonably designed, low in cost, short in process flow, sufficient in reaction, and can produce industrial-grade precipitated barium sulfate; the treatment system adopts automatic backwashing surface filter, microchannel reactor, diaphragm reactor and crystallizer to replace traditional reaction equipment, the whole process is short, and the reaction time can be greatly shortened, the reaction is more sufficient, and the whole process is efficient. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0014] Figure 1 It is a schematic diagram of the system operation of the utility model;
[0015] In the figure: 1. buffer tank; 2. liquid inlet pump; 3. first surface filter; 4. barium chloride solution tank; 5. microchannel reactor; 6. diaphragm reactor; 7. delivery pump; 8. crystallizer; 9. second surface filter; 10. slurry tank; 11. plate and frame filter press; 12. washing tank; 13. drying device. DETAILED DESCRIPTION
[0016] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.
[0017] Example: Figure 1As shown, a system for preparing precipitated barium sulfate comprises a buffer tank 1, a liquid inlet pump 2 and a first surface filter 3 are arranged outside the buffer tank 1, the outlet of the liquid inlet pump 2 is connected with the liquid inlet of the first surface filter 3, the clear liquid port of the first surface filter 3 is connected with a microchannel reactor 5, the liquid inlet of the microchannel reactor 5 is connected with a barium chloride solution tank 4, the liquid outlet of the microchannel reactor 5 is connected with a diaphragm reactor 6, the liquid outlet of the diaphragm reactor 6 is connected with the liquid inlet of a second surface filter 9, an infusion pump 7 and a crystallizer 8 are connected between the diaphragm reactor 6 and the second surface filter 9, the second surface filter 9 is externally connected with a plate and frame filter press 11, and the plate and frame filter press 11 is externally connected with a washing tank 12 and a drying device 13.
[0018] The slag discharge port of the first surface filter 3 is connected to the buffer tank 1, and the first surface filter 3 is connected to the liquid inlet of the microchannel reactor 5. The microchannel reactor 5 can realize full reaction of the materials. A large tube sleeve small tube form is adopted to form a mutual contact reaction after mixing at the end, that is, the barium chloride solution in the barium chloride solution tank 4 reacts with the sulfate in the bittern wastewater.
[0019] A funnel-shaped filter cloth with a plurality of small holes is installed at the bottom of the microchannel reactor 5. The solution after the reaction is deflected and then contacts the reaction again, thereby prolonging the reaction time and improving the reaction efficiency.
[0020] A film with a flow-guiding structure is installed inside the membrane reactor 6, and a number of 1-2 mm holes are opened on the film to further accelerate and strengthen the reaction.
[0021] The liquid inlet of the infusion pump 7 is connected to the liquid outlet of the diaphragm reactor 6, the liquid outlet of the infusion pump 7 is connected to the liquid inlet of the crystallizer 8, the liquid outlet of the crystallizer 8 is connected to the liquid inlet of the second surface filter 9, and an ultrasonic device is installed inside the crystallizer 8, which can use ultrasonic waves of a set frequency to obtain specific precipitated barium sulfate particle size ions during the precipitation process.
[0022] The clear liquid port of the second surface filter 9 is connected to the buffer tank 1 , the slag discharge port of the second surface filter 9 is connected to the slurry tank 10 , and the outlet of the slurry tank 10 is connected to the liquid inlet of the plate and frame filter press 11 .
[0023] The outlet of the plate-frame filter press 11 is connected to the interior of the buffer tank 1 , the slag discharge port of the plate-frame filter press 11 is connected to the washing tank 12 , and the liquid outlet of the washing tank 12 is connected to the interior of the drying device 13 .
[0024] Working principle: When using this precipitated barium sulfate preparation system, bittern wastewater is introduced into the buffer tank 1 and then the liquid inlet pump 2 starts working, and the bittern in the buffer tank 1 is extracted to the first surface filter 3 for filtration. The residue produced after filtration enters the buffer tank 1 again through the pipeline, and the bittern wastewater after the first filtration enters the microchannel reactor 5, and the barium chloride in the barium chloride solution tank 4 reacts with the sulfate in the bittern wastewater. After the reaction, the solution is deflected by the funnel-shaped filter cloth at the bottom of the microchannel reactor 5 and then contacts and reacts again, thereby extending the reaction time and improving the reaction efficiency. The bittern wastewater after the reaction enters the diaphragm reactor 6, and passes through the membrane to further accelerate and strengthen the reaction. The bittern wastewater enters the crystallizer 8 through the delivery pump 7, and the specific precipitated barium sulfate particle size ions are obtained by using ultrasonic waves of a set frequency during the precipitation process;
[0025] After the bitter brine reacts in the crystallizer 8, it enters the second surface filter 9 for double filtration, and its clear liquid returns to the buffer tank 1. The filtered slurry containing a large amount of precipitated barium sulfate generated by the reaction enters the slurry tank 10 and then enters the plate and frame filter press 11. After the precipitated barium sulfate slag is pressed out by the plate and frame filter press 11, it enters the washing tank 12 for washing. After the washing is completed, the precipitated barium sulfate slag enters the drying device 13 for drying to obtain precipitated barium sulfate.
[0026] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A system for preparing precipitated barium sulfate, comprising a buffer tank (1), characterized in that: The buffer tank (1) is provided with a liquid inlet pump (2) and a first surface filter (3) outside the buffer tank (1), the outlet of the liquid inlet pump (2) is connected to the liquid inlet of the first surface filter (3), the clear liquid outlet of the first surface filter (3) is connected to a microchannel reactor (5), the liquid inlet of the microchannel reactor (5) is connected to a barium chloride solution tank (4), the liquid outlet of the microchannel reactor (5) is connected to a diaphragm reactor (6), the liquid outlet of the diaphragm reactor (6) is connected to the liquid inlet of a second surface filter (9), an infusion pump (7) and a crystallizer (8) are connected between the diaphragm reactor (6) and the second surface filter (9), the second surface filter (9) is connected to a plate-frame filter press (11) outside the second surface filter (9), and the plate-frame filter press (11) is connected to a washing tank (12) and a drying device (13) outside the plate-frame filter press (11).
2. A system for preparing precipitated barium sulfate according to claim 1, characterized in that: The slag discharge port of the first surface filter (3) is connected to the buffer tank (1), and the first surface filter (3) is connected to the liquid inlet of the microchannel reactor (5). A funnel-shaped filter cloth is installed at the bottom of the microchannel reactor (5), and the filter cloth has a plurality of small holes.
3. A system for preparing precipitated barium sulfate according to claim 1, characterized in that: A film with a flow-guiding structure is installed inside the membrane reactor (6), and a plurality of holes with a diameter of 1-2 mm are opened on the film.
4. A system for preparing precipitated barium sulfate according to claim 1, characterized in that: The liquid inlet of the infusion pump (7) is connected to the liquid outlet of the diaphragm reactor (6), the liquid outlet of the infusion pump (7) is connected to the liquid inlet of the crystallizer (8), the liquid outlet of the crystallizer (8) is connected to the liquid inlet of the second surface filter (9), and an ultrasonic device is installed inside the crystallizer (8).
5. A system for preparing precipitated barium sulfate according to claim 1, characterized in that: The clear liquid port of the second surface filter (9) is connected to the buffer tank (1), the slag discharge port of the second surface filter (9) is connected to the slag slurry tank (10), and the outlet of the slag slurry tank (10) is connected to the liquid inlet of the plate and frame filter press (11).
6. A system for preparing precipitated barium sulfate according to claim 1, characterized in that: The outlet of the plate-frame filter press (11) is connected to the interior of the buffer tank (1), the slag discharge port of the plate-frame filter press (11) is connected to the washing tank (12), and the liquid outlet of the washing tank (12) is connected to the interior of the drying device (13).