A rotary feeder and papermaking white mud processing device

Abstract

The present invention proposes a rotary feeder and a papermaking white mud treatment device, which includes: a circulating fluidized bed incinerator, a rotary feeder, a stirring chamber and a flue gas purifier. The circulating fluidized bed incinerator has a connected incineration chamber and a cyclone separation chamber, the incineration chamber has a feed inlet and an air inlet, the cyclone separation chamber has an air outlet, the rotary feeder is connected to the feed inlet of the incineration chamber, and the discharge port of the rotary feeder is vertically downward; the stirring chamber has a feed inlet and a discharge port, and the discharge port of the stirring chamber is connected to the feed inlet of the incineration chamber; the flue gas purifier has an air inlet and an air outlet, and the air inlet of the flue gas purifier is connected to the air outlet of the cyclone separation chamber. The present invention can complete the treatment of a large amount of papermaking white mud, and at the same time, the papermaking white mud is sent into the circulating fluidized bed incinerator as a desulfurizer for comprehensive resource utilization, and desulfurization reaction is carried out with the introduced sulfur dioxide, thereby protecting the environment and reducing the operating cost.

Description

Technical Field

[0001] The invention relates to the technical field of papermaking white mud processing, in particular to a rotary feeder and a papermaking white mud processing device. Background Art

[0002] At present, the amount of white mud in my country is at least 5 million tons per year. The average cost of white mud landfill treatment exceeds 50 yuan per ton. In addition, due to the shortage of land resources, landfill treatment is becoming increasingly difficult.

[0003] When papermaking enterprises process white mud, they usually send it to a vacuum slag washer, and after washing, send it to a rotary kiln for sintering to decompose the main components of the white mud. However, the investment cost of the rotary kiln is large, the operation is difficult to control, and the production capacity is low. At the same time, since crude oil, natural gas, etc. are required as fuel for combustion, the cost of lime after sintering is even higher than the cost of direct procurement. Therefore, even enterprises that initially designed and adopted such technology mostly abandoned it for various reasons and discharged the white mud, causing environmental pollution. For pulp and papermaking enterprises that use non-wood fiber as raw materials, the silicon content in the white mud they produce is particularly high, which will affect the efficiency of the alkali recovery process set up by the papermaking enterprises when it is recycled.

[0004] Moreover, since the white mud has a certain viscosity, it sticks together in the rotary kiln. When the white mud is treated at high temperature, it is often heated unevenly. The white mud in the outer layer reacts first, and the white mud in the inner layer reacts last, which prolongs the overall reaction time and reduces the processing efficiency.

[0005] In addition, there are currently other cases of using cement kiln co-treatment technology to treat white mud. However, in fact, the cement models and parameters of cement production enterprises are basically fixed. Therefore, when disposing of white mud, certain adjustments need to be made to the cement production process and formula, which is not conducive to the stable and efficient operation of cement enterprises. Therefore, the promotion of this technology is relatively general.

[0006] Therefore, in order to solve the problem of large-scale papermaking white mud treatment, avoid environmental pollution and realize comprehensive resource utilization, it is urgent to develop a new type of papermaking white mud treatment device. Summary of the invention

[0007] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, an embodiment of the present invention provides a rotary feeder and a papermaking white mud processing device, which can improve the processing efficiency. At the same time, the papermaking white mud can be sent into the papermaking white mud processing device as a desulfurizer for comprehensive resource utilization.

[0008] On the one hand, an embodiment of the present invention proposes a rotary feeder, comprising: a shell, a rotary crushing mechanism and a first grid plate, the shell having a feed passage and a feed port and a discharge port connected to the feed passage; the rotary crushing mechanism is arranged in the feed passage, the rotary crushing mechanism is connected to a driving device, the driving device is arranged outside the shell, the rotary crushing mechanism comprises a rotating shaft and a stirring knife, the driving device drives the rotating shaft and the stirring knife to rotate horizontally; the first grid plate has a plurality of evenly distributed first grids in a vertical direction, two adjacent first grids are separated by a first partition plate, the first grid plate divides the feed passage into a pre-division chamber and a crushing chamber, the stirring knife is located in the crushing chamber, the rotary shaft passes through the first grid plate from a vertical direction, and the discharge port is located at the bottom of the crushing chamber.

[0009] The present invention provides a rotary crushing mechanism and a first grid plate, so that the fed papermaking mud can be pre-divided by the first grid plate, and then sheared and crushed into block-shaped fragments by the rotary crushing mechanism, so that the papermaking mud undergoes a high-temperature decomposition reaction in the process of falling into the furnace body, thereby eliminating the stickiness of the papermaking mud on the outside, preventing the mud from sticking together after falling into the furnace body, and also making the fragments evenly distributed in the circulating fluidized bed incinerator, so that the papermaking mud is evenly heated.

[0010] In some embodiments, the first partition is a metal sheet, and the thickness of the first partition is less than or equal to 0.2 mm. The first partition is made sharper so that the first grid plate can quickly pre-divide the papermaking mud.

[0011] In some embodiments, the width of the crushing chamber is greater than the width of the pre-segmentation chamber, so that a large amount of pre-segmented papermaking white mud can be crushed at the same time.

[0012] In some embodiments, a second grid plate is connected to the discharge port, and the second grid plate has a plurality of second grids evenly distributed in the vertical direction, two adjacent second grids are separated by a second partition plate, and a space is left between the second grid plate and the stirring blade.

[0013] In some embodiments, the inner diameter of the second grid of the second grid plate gradually decreases from the middle to the edge, and the thickness of the second partition is less than or equal to 0.2 mm. Due to the centrifugal force of the stirring blade, the papermaking mud at the edge of the crushing chamber is more and smaller in volume, while the papermaking mud at the center of the crushing chamber is less and slightly larger in volume, so the inner diameter of the second grid in the middle is greater than the inner diameter of the second grid at the edge. In addition, the papermaking mud that is sheared and crushed can be divided again by the second grid plate.

[0014] On the other hand, an embodiment of the present invention proposes a papermaking white mud processing device, including: a circulating fluidized bed incinerator, a rotary feeder, a stirring bin and a flue gas purifier, the circulating fluidized bed incinerator has a connected incineration chamber and a cyclone separation chamber, the incineration chamber has a feed inlet and an air inlet, the feed inlet of the incineration chamber is located at the top of the incineration chamber, the cyclone separation chamber has an air outlet, and the air outlet of the cyclone separation chamber is located at the top of the cyclone separation chamber; the rotary feeder is connected to the feed inlet of the incineration chamber, and the discharge port of the rotary feeder is vertically downward; the stirring bin has a feed inlet and a discharge port, and the discharge port of the stirring bin is connected to the feed inlet of the incineration chamber; the flue gas purifier has an air inlet and an air outlet, the air inlet of the flue gas purifier is connected to the air outlet of the cyclone separation chamber, and the air outlet of the flue gas purifier is connected to the chimney.

[0015] The present invention can complete the treatment of a large amount of papermaking white mud by setting up a circulating fluidized bed incinerator. At the same time, the papermaking white mud is sent into the circulating fluidized bed incinerator as a desulfurizer for comprehensive resource utilization, and desulfurization reaction is carried out with the introduced sulfur dioxide, thereby protecting the environment and reducing the operating cost.

[0016] The present invention arranges a rotary feeder at the feed inlet of a circulating fluidized bed incinerator, so that the papermaking mud can be sheared and crushed into block-shaped fragments, so that the papermaking mud undergoes a high-temperature decomposition reaction in the process of falling into the furnace body, thereby eliminating the stickiness of the papermaking mud outside, preventing the papermaking mud from sticking together after falling into the furnace body, and can also make the fragments evenly distributed in the circulating fluidized bed incinerator, so that the papermaking mud is evenly heated, and the desulfurization effect can also be improved.

[0017] The present invention can process the flue gas by arranging the flue gas purifier to meet the emission standards and prevent the air from being polluted.

[0018] In some embodiments, the papermaking white mud treatment device further comprises a flue gas heat exchanger, which is connected to the connecting pipeline between the air outlet of the cyclone separation chamber and the air inlet of the flue gas purifier, so as to make full use of the heat of the flue gas.

[0019] In some embodiments, the circulating fluidized bed incinerator has an adsorbent nozzle, which is located between the feed inlet of the incineration chamber and the air outlet of the cyclone separation chamber. The adsorbent nozzle is connected to the adsorbent powder bin and the compressed air storage tank through pipelines.

[0020] In some embodiments, the feed port of the mixing bin includes a white mud feed port and a water inlet, the white mud feed port is connected to the white mud bin, and the water inlet is connected to the water replenishment bin.

[0021] In some embodiments, a pump body is connected to the connecting pipeline between the discharge port of the stirring bin and the feed port of the incineration chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings.

[0023] in:

[0024] Figure 1 Schematic diagram of the structure of a papermaking white mud processing device in an embodiment of the present invention;

[0025] Figure 2 1 is a schematic diagram of the structure of a rotary feeder in an embodiment of the present invention;

[0026] Reference numerals:

[0027] 1-white mud warehouse; 2-mixing warehouse; 3-pump body; 4-water replenishment warehouse; 5-rotating feeder; 6-incineration chamber; 7-cyclone separation chamber; 8-adsorbent powder warehouse; 9-compressed air storage tank; 10-flue gas heat exchanger; 11-flue gas purifier; 12-chimney;

[0028] 501-driving device; 502-pre-dividing chamber; 503-rotating shaft; 504-first grid plate; 505-mixing blade; 506-crushing chamber; 507-second grid plate. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0030] The rotary feeder and papermaking white mud processing device according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0031] like Figure 2 As shown, an embodiment of the present invention proposes a rotary feeder, including: a shell, a rotary crushing mechanism and a first grid plate 504, the shell having a feeding channel and a feeding port and a discharging port connected to the feeding channel; the rotary crushing mechanism is arranged in the feeding channel, the rotary crushing mechanism is connected to the driving device 501, the driving device 501 is arranged outside the shell, the rotary crushing mechanism includes a rotating shaft 503 and a stirring knife 505, the driving device 501 drives the rotating shaft 503 and the stirring knife 505 to rotate horizontally; the first grid plate 504 has a plurality of evenly distributed first grids in the vertical direction, and two adjacent first grids are separated by a first partition plate, the first grid plate 504 divides the feeding channel into a pre-dividing chamber 502 and a crushing chamber 506, the stirring knife 505 is located in the crushing chamber 506, the rotating shaft 503 passes through the first grid plate 504 from the vertical direction, and the discharging port is located at the bottom of the crushing chamber 506.

[0032] The present invention provides a rotating crushing mechanism and a first grid plate 504, so that the fed papermaking mud can be pre-divided by the first grid plate 504, and then sheared and crushed into block-shaped fragments by the rotating crushing mechanism, so that the papermaking mud undergoes a high-temperature decomposition reaction in the process of falling into the furnace body, thereby eliminating the stickiness of the papermaking mud on the outside, preventing the mud from sticking together after falling into the furnace body, and also making the fragments evenly distributed in the circulating fluidized bed incinerator, so that the papermaking mud is evenly heated.

[0033] Furthermore, the rotary feeder 5 is made of a highly wear-resistant and heat-resistant material to ensure service life and stability. Since it is used in a circulating fluidized bed incinerator or other incinerators, the rotary feeder 5 needs to have high temperature resistance. Since a stirring blade 505 is provided in the rotary feeder 5 to shear and crush the white mud, the white mud is constantly rubbed in the rotary feeder 5, and the rotary feeder 5 needs to have high wear resistance.

[0034] Optionally, the highly wear-resistant and heat-resistant material may be chromium-containing heat-resistant steel, heat-resistant and wear-resistant aluminum alloy, or high-temperature ceramics.

[0035] In some embodiments, the first separator is a metal sheet, and the thickness of the first separator is less than or equal to 0.2 mm. The first separator is made sharper so that the first grid plate 504 can quickly pre-segment the papermaking mud.

[0036] In some embodiments, the width of the crushing chamber 506 is greater than the width of the pre-segmentation chamber 502. A relatively large amount of pre-segmented papermaking white mud can be crushed at the same time.

[0037] In some embodiments, a second grid plate 507 is connected to the discharge port. The second grid plate 507 has a plurality of evenly distributed second grids in a vertical direction. Two adjacent second grids are separated by a second partition plate. There is space between the second grid plate and the stirring blade 505.

[0038] In some embodiments, the inner diameter of the second grid of the second grid plate 507 gradually decreases from the middle to the edge, and the thickness of the second partition is less than or equal to 0.2 mm. Due to the centrifugal force of the stirring blade 505, the papermaking mud at the edge of the crushing chamber 506 is more and smaller in volume, while the papermaking mud at the center of the crushing chamber 506 is less and slightly larger in volume, so the inner diameter of the second grid in the middle is greater than the inner diameter of the second grid at the edge. In addition, the papermaking mud that has been sheared and crushed can be divided again by the second grid plate 507.

[0039] like Figure 1As shown, another embodiment of the present invention proposes a papermaking white mud processing device, including: a circulating fluidized bed incinerator, a rotary feeder 5, a stirring bin 2 and a flue gas purifier 11, the circulating fluidized bed incinerator has a connected incineration chamber 6 and a cyclone separation chamber 7, the incineration chamber 6 has a feed port and an air inlet, the feed port of the incineration chamber 6 is located at the top of the incineration chamber 6, the cyclone separation chamber 7 has an air outlet, and the air outlet of the cyclone separation chamber 7 is located at the top of the cyclone separation chamber 7; the rotary feeder 5 is connected to the feed port of the incineration chamber 6, and the discharge port of the rotary feeder 5 is vertically downward; the stirring bin 2 has a feed port and a discharge port, and the discharge port of the stirring bin 2 is connected to the feed port of the incineration chamber 6; the flue gas purifier 11 has an air inlet and an air outlet, the air inlet of the flue gas purifier 11 is connected to the air outlet of the cyclone separation chamber 7, and the air outlet of the flue gas purifier 11 is connected to the chimney 12.

[0040] The present invention can process a large amount of papermaking white mud by setting up a circulating fluidized bed incinerator, and at the same time, the papermaking white mud is sent into the circulating fluidized bed incinerator as a desulfurizing agent for comprehensive resource utilization, and desulfurization reaction is carried out with the introduced sulfur dioxide, thereby protecting the environment and reducing the operating cost. The structure is simple and flexible, and it is easy to realize industrialization.

[0041] When in use, the white mud fragments enter the circulating fluidized bed incinerator and are dried and decomposed. The main components CaCO3 and MgCO3 undergo a high-temperature decomposition reaction to form alkaline oxides such as calcium oxide and magnesium oxide. Then sulfur dioxide and oxygen are introduced into the furnace to cause a desulfurization reaction, so that the calcium oxide and magnesium oxide neutralize the SO2 in the flue gas, thereby achieving comprehensive resource utilization while treating the white mud.

[0042] The main components of white mud are calcium carbonate and magnesium carbonate. A series of reactions that occur when entering the furnace are as follows:

[0043] 1) High temperature decomposition reaction:

[0044] CaCO3→CaO+CO2

[0045] MgCO3→MgO+CO2

[0046] 2) Desulfurization reaction:

[0047] CaO+SO2+1 / 2O2→CaSO4

[0048] MgO+SO2+1 / 2O2→MgSO4

[0049] The present invention provides a rotary feeder 5 at the feed inlet of the circulating fluidized bed incinerator, which can shear and crush the papermaking mud into block-shaped fragments, so that the papermaking mud undergoes a high-temperature decomposition reaction in the process of falling into the furnace body, thereby eliminating the stickiness of the papermaking mud outside, preventing the papermaking mud from sticking together after falling into the furnace body, and can also make the fragments evenly distributed in the circulating fluidized bed incinerator, so that the papermaking mud is evenly heated, and the desulfurization effect can also be improved.

[0050] The present invention can process the flue gas by arranging the flue gas purifier 11 to meet the emission standards and prevent the air from being polluted.

[0051] Furthermore, the air inlet of the combustion chamber 6 is located at the bottom of the combustion chamber 6 and is used to introduce sulfur dioxide and oxygen.

[0052] It should be noted that the circulating fluidized bed incinerator also includes other structures, which are not shown in the drawings because they are not closely related to the present invention. The structure of the circulating fluidized bed incinerator is prior art and will not be described in detail here.

[0053] Furthermore, the discharge port of the rotary feeder 5 is located in the circulating fluidized bed incinerator, and other devices of the rotary feeder 5 are located outside the circulating fluidized bed incinerator. If the discharge port of the rotary feeder 5 is provided with a second grid plate 507, the second grid plate 507 is located in the circulating fluidized bed incinerator.

[0054] Furthermore, the flue gas purifier 11 may select an SCR denitration reactor, a bag filter, an electrostatic precipitator or a combination of different flue gas purifiers 11 according to the concentration of pollutants in the flue gas and the requirements of relevant national environmental protection standards.

[0055] In some embodiments, the papermaking white mud treatment device further includes a flue gas heat exchanger 10, which is connected to the connecting pipeline between the air outlet of the cyclone separation chamber 7 and the air inlet of the flue gas purifier 11. The heat carried by the high-temperature flue gas can be fully utilized. The flue gas heat exchanger 10 can be selected as an air-to-air heat exchanger, an air-to-liquid heat exchanger, or a combination of the two according to the actual temperature of the flue gas.

[0056] In some embodiments, the circulating fluidized bed incinerator has an adsorbent nozzle, which is located between the feed port of the incineration chamber 6 and the air outlet of the cyclone separation chamber 7. The adsorbent nozzle is connected to the adsorbent powder bin 8 and the compressed air storage tank 9 through pipelines. Heavy metal adsorbents, such as kaolin, are stored in the adsorbent powder bin 8. Compressed air sprays the adsorbent powder into the flue between the incineration chamber 6 and the cyclone separation chamber 7 to adsorb the heavy metals brought by the white mud in the flue gas, thereby preventing the heavy metals in the flue gas from exceeding the standard.

[0057] In some embodiments, the feed port of the mixing bin 2 includes a white mud feed port and a water inlet, the white mud feed port is connected to the white mud bin 1, and the water inlet is connected to the water replenishment bin 4. The white mud solid waste for papermaking is stored in the white mud bin 1, the discharge port of the white mud bin 1 is connected to the white mud feed port of the mixing bin 2, water is stored in the water replenishment bin 4, and the water outlet of the water replenishment bin 4 is connected to the water inlet of the mixing bin 2.

[0058] Furthermore, a control valve is connected to the connecting pipeline between the white mud bin 1 and the mixing bin 2, and a flow valve is connected to the connecting pipeline between the water replenishment bin 4 and the mixing bin 2. A gravity sensor is provided outside the mixing bin 2 to monitor and control the quality of the white mud and water entering the mixing bin 2.

[0059] It should be noted that when the water content of the white mud in the white mud bin 1 is sufficient, it is not necessary to add water through the water replenishing bin 4. When the water content of the white mud in the white mud bin 1 is low, it is not easy to form a stable and uniform paste and is not convenient for pumping, so it is necessary to replenish water in the mixing bin 2 to increase the water content of the white mud.

[0060] In some embodiments, a pump body 3 is connected to the connecting pipeline between the discharge port of the mixing bin 2 and the feed port of the incineration chamber 6. The pump body 3 is used to transport the stirred white mud to the rotary feeder 5.

[0061] Furthermore, the connecting pipelines involved in this embodiment all adopt closed pipelines, which can prevent the white mud from leaking out and affecting the surrounding environment.

[0062] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0063] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0064] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0066] In the present invention, the term "some embodiments" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment are included in at least one embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments and features of the different embodiments described in this specification without contradicting each other.

[0067] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A rotary feeder, characterized in that: include: A shell body, wherein the shell body has a material passage and a material inlet and a material outlet communicating with the material passage; A rotating crushing mechanism, the rotating crushing mechanism is arranged in the material transfer channel, the rotating crushing mechanism is connected to a driving device, the driving device is arranged outside the shell, the rotating crushing mechanism includes a rotating shaft and a stirring blade, and the driving device drives the rotating shaft and the stirring blade to rotate horizontally; a first grid plate, wherein the first grid plate has a plurality of first grids evenly distributed in a vertical direction, two adjacent first grids are separated by a first partition plate, the first grid plate divides the material passage into a pre-segmentation chamber and a crushing chamber, the stirring blade is located in the crushing chamber, the rotating shaft passes through the first grid plate in a vertical direction, and the material discharge port is located at the bottom of the crushing chamber; The discharge port is connected to a second grid plate, wherein the second grid plate has a plurality of second grids evenly distributed in a vertical direction, two adjacent second grids are separated by a second partition plate, and a space is left between the second grid plate and the stirring blade; The inner diameter of the second grid of the second grid plate gradually decreases from the middle to the edge, the thickness of the second partition is less than or equal to 0.2 mm, and the papermaking white mud sheared and crushed by the stirring knife is divided again by the second grid plate.

2. The rotary feeder according to claim 1, characterized in that: The first partition is a metal sheet, and the thickness of the first partition is less than or equal to 0.2 mm.

3. The rotary feeder according to claim 1, characterized in that: The width of the crushing chamber is greater than the width of the pre-segmentation chamber.

4. A papermaking white mud processing device, characterized in that: include: A circulating fluidized bed incinerator, wherein the circulating fluidized bed incinerator has an incineration chamber and a cyclone separation chamber connected to each other, the incineration chamber has a feed inlet and an air inlet, the feed inlet of the incineration chamber is located at the top of the incineration chamber, the cyclone separation chamber has an air outlet, and the air outlet of the cyclone separation chamber is located at the top of the cyclone separation chamber; The rotary feeder according to any one of claims 1 to 3, wherein the rotary feeder is connected to the feed inlet of the incineration chamber, and the discharge port of the rotary feeder is vertically downward; A stirring chamber, wherein the stirring chamber has a feed inlet and a discharge inlet, and the discharge inlet of the stirring chamber is connected to the feed inlet of the incineration chamber; A flue gas purifier, the flue gas purifier has an air inlet and an air outlet, the air inlet of the flue gas purifier is connected to the air outlet of the cyclone separation chamber, and the air outlet of the flue gas purifier is connected to the chimney.

5. The papermaking white mud processing device according to claim 4, characterized in that: It also includes a flue gas heat exchanger, which is connected to the connecting pipeline between the air outlet of the cyclone separation chamber and the air inlet of the flue gas purifier.

6. The papermaking white mud processing device according to claim 4, characterized in that: The circulating fluidized bed incinerator has an adsorbent nozzle, which is located between the feed inlet of the incineration chamber and the air outlet of the cyclone separation chamber. The adsorbent nozzle is connected to the adsorbent powder bin and the compressed air storage tank through pipelines.

7. The papermaking white mud processing device according to claim 4, characterized in that: The feed inlet of the mixing bin comprises a white mud feed inlet and a water inlet, the white mud feed inlet is connected to the white mud bin, and the water inlet is connected to the water replenishment bin.

8. The papermaking white mud processing device according to claim 4, characterized in that: A pump body is connected to the connecting pipeline between the material outlet of the stirring bin and the material inlet of the incineration chamber.

Images