Tower type continuous reaction device

Abstract

The invention relates to a tower type continuous reaction device. The device comprises a tower type reactor, a material circulating unit and a solid-liquid separation unit, the tower reactor comprises a solid raw material inlet, a raw material liquid inlet, a reaction material outlet, a first circulating liquid outlet, a first circulating liquid inlet and a recycled liquid inlet; the material circulating unit comprises a circulating pipeline and a first circulating pump arranged on the circulating pipeline, and an inlet and an outlet of the circulating pipeline are respectively communicated with the first circulating liquid inlet and the first circulating liquid outlet; the solid-liquid separation unit comprises a solid-liquid separator communicated with the reaction material outlet, a liquid outlet of the solid-liquid separator is communicated with the recycled liquid inlet through a liquid return pipeline, and a second circulating pump is arranged on the liquid return pipeline. The tower type continuous reaction device disclosed by the invention can realize continuous production of chemical ash removal of coal, and is high in chemical ash removal efficiency and good in ash removal effect.

Description

[0001] This application is a divisional application of application number 2021102253809, entitled "A tower-type continuous reaction device and its ash removal method", with a filing date of March 1, 2021. Technical Field

[0002] The invention relates to the technical field of reaction devices, in particular to a tower type continuous reaction device. Background Art

[0003] In the world's primary energy consumption structure, oil, natural gas, and coal still occupy a major position, with a total amount reaching 86.3% of the world's total energy consumption; of which oil accounts for 32.57%, natural gas accounts for 23.71%, and coal accounts for 30.03%. In China's primary energy consumption structure, oil, natural gas, and coal account for a total of 89.1%, which is higher than the world average, of which oil accounts for 17.51%, natural gas accounts for 5.62%, and coal accounts for 66.03%. Therefore, coal still occupies a dominant position in the country's energy structure.

[0004] In recent years, China's modern coal chemical technology has made great progress and development. In the fields of coal-to-activated carbon, coal-to-oil, coal-to-natural gas, coal-to-olefins, coal-to-ethylene glycol, ultra-pure coal, ash-free coke, etc., after years of unremitting efforts, China has mastered modern coal chemical process technology with independent intellectual property rights, and has reached the world's leading or advanced level as a whole. It has the ability to build a modern coal chemical industry system, can cope with the increasing risks of international oil and gas price fluctuations, ecological and environmental protection constraints, new energy and renewable energy substitution, and realize the transformation of coal from a single fuel to a fuel and raw material.

[0005] However, my country has always remained at the level of washing and selecting when it comes to removing ash from coal. It can only use low-ash raw coal, and through methods such as coal washing, cyclone coal selection, and floating and sinking coal selection, further reduce the ash content of coal to obtain low-ash coal. Due to the use of physical methods, the ash content in ultra-low ash coal is still as high as 2%.

[0006] Chemical methods can achieve low ash content in coal and activated carbon, and the lowest ash content can even be less than 200ppm. However, chemical ash removal of coal and activated carbon in my country is still in the laboratory stage. Many colleges, scientific research institutions, and professional factories have conducted many kinds of chemical ash removal experiments. Although the results are good, they have not yet been able to achieve industrial production.

[0007] Chemical coal deashing is an efficient and low-cost method for producing ultra-pure coal. Ultra-pure coal is a product in itself; it can also be used as a raw material for the production of subsequent products such as super activated carbon, ash-free coke, nanocarbon, electrode materials, graphite raw materials, and recarburizers. Chemical coal deashing is a technology with broad market prospects.

[0008] However, the equipment involved in the industrial chemical deashing device, if using the existing technology, can only be produced intermittently; the output is limited, and the production cost is high and the labor intensity is high. In order to solve the problems existing in the industrial chemical deashing production of coal and activated carbon, the present invention proposes a tower type continuous reaction device, which can realize the continuous and efficient chemical deashing production of coal and activated carbon. Summary of the invention

[0009] The invention provides a tower type continuous reaction device which can realize continuous production and has high reaction efficiency.

[0010] The technical problem solved by the present invention is achieved by adopting the following technical solutions: A tower type continuous reaction device, comprising: Tower reactor, material circulation unit, solid-liquid separation unit; The tower reactor comprises a solid raw material inlet, a raw material liquid inlet, a reaction material outlet, a first circulating liquid outlet, a first circulating liquid inlet, and a recycled liquid inlet; The material circulation unit comprises a circulation pipeline and a first circulation pump arranged on the circulation pipeline, wherein the inlet and outlet of the circulation pipeline are respectively connected to the first circulation liquid inlet and the first circulation liquid outlet; The solid-liquid separation unit comprises a solid-liquid separator connected to the reaction material outlet, the liquid outlet of the solid-liquid separator is connected to the reuse liquid inlet through a liquid return pipeline, and a second circulation pump is arranged on the liquid return pipeline.

[0011] In some embodiments, a built-in solid-liquid separator is provided inside the tower reactor, and the built-in solid-liquid separator is located in the upper middle part of the tower reactor.

[0012] In some embodiments, the solid feedstock inlet extends to below the built-in solid-liquid separator through a pipeline.

[0013] In some embodiments, the solid raw material inlet is located at the top of the tower reactor; the raw material liquid inlet is located in the middle of the tower reactor; the reaction material outlet is located at the bottom of the tower reactor; the first circulating liquid outlet is located at the upper part of the tower reactor, and the first circulating liquid inlet is located at the lower part of the tower reactor; the first circulating liquid inlet is higher than the recycled liquid inlet.

[0014] In some embodiments, the first circulating liquid outlet is located higher than the built-in solid-liquid separator.

[0015] In some embodiments, the circulation pipeline is provided with a supplementary raw material inlet.

[0016] In some embodiments, it further comprises a waste liquid filtering unit, wherein the waste liquid filtering unit is disposed in the middle and upper part of the tower reactor; The waste liquid filtering unit comprises a waste liquid filter; The tower reactor also includes a second circulating liquid outlet and a second circulating liquid inlet; The inlet of the waste liquid filter is communicated with the second circulating liquid outlet; the outlet of the waste liquid filter is communicated with the second circulating liquid inlet.

[0017] In some embodiments, the solid-liquid separation unit is provided with a solid reaction material outlet and a first waste liquid outlet.

[0018] A method for removing ash from the above-mentioned tower-type continuous reaction device comprises: The raw material liquid is added into the tower reactor. After the liquid level reaches the first circulating liquid outlet position, the solid raw material enters the tower reactor, and a solid-liquid reaction occurs. The solid material settles to the bottom of the tower reactor under the action of gravity and enters the solid-liquid separation unit from the reaction material outlet. After solid-liquid separation, the liquid material returns to the tower reactor as a reuse liquid or is output as a waste liquid; When the solid material settles too fast and affects the chemical reaction, the first circulation pump is turned on, and the liquid material returns to the tower reactor from the first circulation liquid outlet through the first circulation pump and the first circulation liquid inlet. The liquid material forms a fluidized state in the tower reactor, which reduces the settling speed of the solid material, thereby adjusting the reaction state.

[0019] In some embodiments, when the liquid material forms a fluidized state in the tower reactor, the built-in solid-liquid separator separates the solid material below the built-in solid-liquid separator and does not participate in the circulation of the liquid outside the tower reactor.

[0020] The present invention has the following beneficial effects: (1) The tower-type continuous reaction device of the present invention can realize the continuous production of coal chemical ash removal, with high chemical ash removal efficiency and good ash removal effect.

[0021] (2) The device can be used in various production scales, from 1,000 tons per year to 1 million tons per year.

[0022] (3) The solid-liquid separation unit of the device of the present invention can realize the recycling of waste acid from ash removal and reduce the cost of ash removal.

[0023] (4) The device of the present invention can be used in a variety of fields: coal ash removal, activated carbon ash removal, coke ash removal, coal alkali liquid ash removal; and the following scenarios: Synthesis reaction and replacement reaction of solid materials and liquid materials; Chemical reaction between some elements in solid materials and liquid materials; Solid material removal; The liquid material can be water, acid solution, alkali solution, salt solution, ionic liquid, etc.

[0024] (5) The device of the present invention can be easily connected to an automatic operation control system to realize automated and unmanned operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 It is a structural schematic diagram of the first tower type continuous reaction device of the present invention; Figure 2 It is a schematic structural diagram of the second tower type continuous reaction device of the present invention.

[0027] in: Tower reactor 10, material circulation unit 20, solid-liquid separation unit 30, built-in solid-liquid separator 40, waste liquid filtering unit 50, solid raw material inlet 101, raw material liquid inlet 102, reaction material outlet 103, first circulating liquid outlet 104, first circulating liquid inlet 105, recycled liquid inlet 106, second circulating liquid outlet 107, second circulating liquid inlet 108, circulation pipeline 201, first circulating pump 2011, supplementary raw material inlet 2012, solid-liquid separator 301, second circulating pump 302, solid reaction material outlet 303, first waste liquid outlet 304, waste liquid filter 501, second waste liquid outlet 502. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0029] Example 1 Reference Figure 1As shown, a tower continuous reaction device 1 comprises: a tower reactor 10, a material circulation unit 20, and a solid-liquid separation unit 30. The tower reactor 10 comprises a solid raw material inlet 101, a raw material liquid inlet 102, a reaction material outlet 103, a first circulating liquid outlet 104, a first circulating liquid inlet 105, and a recycled liquid inlet 106. In this embodiment, the openings on the tower reactor 10 are arranged as follows: the solid raw material inlet 101 is located at the top of the tower reactor 10; the raw material liquid inlet 102 is located in the middle of the tower reactor 10; the reaction material outlet 103 is located at the bottom of the tower reactor 10; the first circulating liquid outlet 105 is located at the upper part of the tower reactor 10, and the first circulating liquid inlet 105 is located at the lower part of the tower reactor 10; the first circulating liquid inlet 105 is higher than the recycled liquid inlet 106. The material circulation unit 20 includes a circulation pipeline 201 and a first circulation pump 2011 arranged on the circulation pipeline 201. The inlet and outlet of the circulation pipeline 201 are respectively connected to the first circulation liquid inlet 105 and the first circulation liquid outlet 104. The overall reaction speed can be adjusted by setting the material circulation unit 20. The solid-liquid separation unit 30 includes a solid-liquid separator 301 connected to the reaction material outlet 103. The liquid outlet of the solid-liquid separator 301 is connected to the reuse liquid inlet 106 through the return liquid pipeline, and a second circulation pump 302 is arranged on the return liquid pipeline. Through the arrangement of this part, the waste liquid can be recycled and the dust removal cost can be reduced. The solid-liquid separation unit 30 is provided with a solid reaction material outlet 303 and a first waste liquid outlet 304. In this way, the solid reaction material is separated out by the solid-liquid separation unit 30, and the waste liquid is also separated out. The reuse liquid that can be used is returned to the tower reactor 10 to continue the reaction, which saves costs and is more environmentally friendly.

[0030] According to actual needs, the tower reactor 10 can also be provided with a built-in solid-liquid separator 40 inside, and the built-in solid-liquid separator 10 is for filtering the solid of the part and does not participate in the external circulation of the liquid. In the present embodiment, the built-in solid-liquid separator 40 is set, and it is located at the middle and upper part of the tower reactor 10. At this time, the solid raw material inlet 101 extends to the below of the built-in solid-liquid separator 40 through a pipeline, so as to play the role of filtering solid matter when needed. At the same time, the position of the first circulating liquid outlet 104 in the present embodiment is higher than the built-in solid-liquid separator 40, and the circulation pipeline 201 is provided with a supplementary raw material inlet 2012.

[0031] Example 2 Reference Figure 2As shown, a tower continuous reaction device 2 includes: a tower reactor 10, a material circulation unit 20, and a solid-liquid separation unit 30. The tower reactor 10 includes a solid raw material inlet 101, a raw material liquid inlet 102, a reaction material outlet 103, a first circulating liquid outlet 104, a first circulating liquid inlet 105, and a recycled liquid inlet 106. In this embodiment, the openings on the tower reactor 10 are arranged as follows: the solid raw material inlet 101 is located at the top of the tower reactor 10; the raw material liquid inlet 102 is located in the middle of the tower reactor 10; the reaction material outlet 103 is located at the bottom of the tower reactor 10; the first circulating liquid outlet 105 is located at the upper part of the tower reactor 10, and the first circulating liquid inlet 105 is located at the lower part of the tower reactor 10; the first circulating liquid inlet 105 is higher than the recycled liquid inlet 106. The material circulation unit 20 includes a circulation pipeline 201 and a first circulation pump 2011 arranged on the circulation pipeline 201. The inlet and outlet of the circulation pipeline 201 are respectively connected to the first circulation liquid inlet 105 and the first circulation liquid outlet 104. The overall reaction speed can be adjusted by setting the material circulation unit 20. The solid-liquid separation unit 30 includes a solid-liquid separator 301 connected to the reaction material outlet 103. The liquid outlet of the solid-liquid separator 301 is connected to the reuse liquid inlet 106 through the return liquid pipeline, and a second circulation pump 302 is arranged on the return liquid pipeline. Through the arrangement of this part, the waste liquid can be recycled and the dust removal cost can be reduced. The solid-liquid separation unit 30 is provided with a solid reaction material outlet 303 and a first waste liquid outlet 304. In this way, the solid reaction material is separated out by the solid-liquid separation unit 30, and the waste liquid is also separated out. The reuse liquid that can be used is returned to the tower reactor 10 to continue the reaction, which saves costs and is more environmentally friendly. In this embodiment, a built-in solid-liquid separator 40 is provided, which is located in the middle and upper part of the tower reactor 10. At this time, the solid raw material inlet 101 extends to the bottom of the built-in solid-liquid separator 40 through a pipeline, so as to filter the solid matter when necessary. At the same time, in this embodiment, the position of the first circulating liquid outlet 104 is higher than the built-in solid-liquid separator 40, and a supplementary raw material inlet 2011 is provided on the circulation pipeline 201.

[0032] The tower reactor 10 further includes a second circulating liquid outlet 107 and a second circulating liquid inlet 108; in this case, the device is further provided with a waste liquid filtering unit 50, which is arranged in the middle and upper part of the tower reactor 10. The waste liquid filtering unit 50 includes a waste liquid filter 501, the inlet of the waste liquid filter 501 is connected to the second circulating liquid outlet 107; the outlet of the waste liquid filter 501 is connected to the second circulating liquid inlet 108. The waste liquid filter 501 is also provided with a second waste liquid outlet 502 for discharging the treated waste liquid.

[0033] Example 3 A method for removing ash from a tower continuous reaction device (using the tower continuous reaction device 2 in Example 2), comprising: The raw material liquid is added into the tower reactor 10. After the liquid level reaches the first circulating liquid outlet 104, the solid raw material enters the tower reactor 10, and a solid-liquid reaction occurs. The solid material settles to the bottom of the tower reactor under the action of gravity and enters the solid-liquid separation unit 30 from the reaction material outlet 103. After solid-liquid separation, the solid reaction material is sent to the next process through an external conveying device; the liquid material returns to the tower reactor 10 as a recycled liquid, or is output as a waste liquid.

[0034] When the sedimentation rate of the solid material is too fast and affects the chemical reaction, the first circulation pump 2011 is turned on, and the liquid material returns to the tower reactor 10 from the first circulation liquid outlet 104 through the first circulation pump 2011 and the first circulation liquid inlet 105. The liquid material forms a fluidized state in the tower reactor 10, which reduces the sedimentation rate of the solid material, thereby adjusting the reaction state.

[0035] When the liquid material forms a fluidized state in the tower reactor 10 , the built-in solid-liquid separator 40 separates the solid material below the built-in solid-liquid separator 40 and does not participate in the circulation of the liquid outside the tower reactor 10 .

[0036] In the specific reaction process, the solid material and the liquid material flow in the opposite direction. The solid material is coal block, coal powder, activated carbon block, activated carbon powder; the liquid material is one or more mixed acid liquids of inorganic acids such as hydrofluoric acid, hydrochloric acid, fluorosilicic acid, sulfuric acid, acid nitric acid, etc.; or the liquid material is one or more mixed alkali liquids of inorganic alkali liquids such as sodium hydroxide solution, potassium hydroxide solution, sodium aluminate solution, sodium silicate solution, etc. The tower diameter of the device of the present invention is 1 meter, the tower height is 7 meters (effective volume 4.67M 3 ), using this device has the production effect shown in Table 1.

[0037] Therefore, the use of the tower-type continuous reaction device 2 can realize the continuous production of coal chemical ash removal, with high chemical ash removal efficiency and good ash removal effect.

[0038] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A tower type continuous reaction device, characterized in that: include: Tower reactor, material circulation unit, solid-liquid separation unit; The tower reactor comprises a solid raw material inlet, a raw material liquid inlet, a reaction material outlet, a first circulating liquid outlet, a first circulating liquid inlet, and a recycled liquid inlet; The material circulation unit comprises a circulation pipeline and a first circulation pump arranged on the circulation pipeline, wherein the inlet and outlet of the circulation pipeline are respectively connected to the first circulation liquid inlet and the first circulation liquid outlet; The solid-liquid separation unit comprises a solid-liquid separator connected to the reaction material outlet, the liquid outlet of the solid-liquid separator is connected to the reuse liquid inlet through a liquid return pipeline, and a second circulation pump is arranged on the liquid return pipeline.

2. A tower type continuous reaction device according to claim 1, characterized in that: A built-in solid-liquid separator is arranged inside the tower reactor, and the built-in solid-liquid separator is located in the middle and upper part of the tower reactor.

3. A tower type continuous reaction device according to claim 2, characterized in that: The solid raw material inlet extends to the lower side of the built-in solid-liquid separator through a pipeline.

4. A tower type continuous reaction device according to claim 1, characterized in that: The solid raw material inlet is located at the top of the tower reactor; the raw material liquid inlet is located in the middle of the tower reactor; the reaction material outlet is located at the bottom of the tower reactor; the first circulating liquid outlet is located at the upper part of the tower reactor, and the first circulating liquid inlet is located at the lower part of the tower reactor; the first circulating liquid inlet is higher than the recycled liquid inlet.

5. A tower type continuous reaction device according to claim 2, characterized in that: The first circulating liquid outlet is located higher than the built-in solid-liquid separator.

6. A tower type continuous reaction device according to claim 1, characterized in that: The circulation pipeline is provided with a supplementary raw material inlet.

7. A tower type continuous reaction device according to claim 1, characterized in that: It also includes a waste liquid filtering unit, which is arranged in the middle and upper part of the tower reactor; The waste liquid filtering unit comprises a waste liquid filter; The tower reactor also includes a second circulating liquid outlet and a second circulating liquid inlet; The inlet of the waste liquid filter is communicated with the second circulating liquid outlet; the outlet of the waste liquid filter is communicated with the second circulating liquid inlet.

8. A tower type continuous reaction device according to claim 1, characterized in that: The solid-liquid separation unit is provided with a solid reaction material outlet and a first waste liquid outlet.

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