An exhaust gas treatment device for water glass production

Abstract

An exhaust gas treatment device for the production of water glass according to the present invention includes a gas treatment barrel and a storage barrel inserted at the bottom of the exhaust gas treatment barrel. A purification space is provided inside the exhaust gas treatment barrel, and a preheating space is provided inside the storage barrel. An exhaust pipe is wound between the gaps of the exhaust gas treatment barrel and the storage barrel. The present invention adopts the design of a concave exhaust gas treatment barrel and a convex storage barrel, and an exhaust pipe is wound between the gaps, so that the heat in the exhaust gas is excellently dissipated into the storage barrel through the exhaust pipe to heat the quartz sand particles in the storage barrel, making full use of the heat in the exhaust gas. In the treatment of harmful gases in the exhaust gas, the design of an intake ring and an exhaust nozzle is adopted, and the exhaust gas can be fully discharged into the liquid for absorbing harmful gases in the exhaust gas, so as to well treat the high-temperature harmful exhaust gas generated in the production process of water glass. Moreover, the overall structure design is very compact, does not occupy space, and the form of preheating quartz sand particles with exhaust gas is very environmentally friendly.

Description

Technical Field

[0001] The present invention relates to the field related to the production of water glass, and particularly to an exhaust gas treatment device for water glass production. Background Art

[0002] Water glass is the common name for sodium silicate solution and is widely used in industry. It is used in the soap industry to moderate alkalinity and in the foundry industry to bond sand and clay. Currently, the vast majority of sodium silicate in China is prepared by the dry method. During the preparation process, a large amount of tail gas such as sulfur dioxide, carbon dioxide, and soot is often discharged, causing environmental pollution and the greenhouse effect.

[0003] In addition, the temperature of the tail gas generated during the production of sodium silicate is basically very high, and the energy contained in it is also very high. The utilization of the waste heat in the tail gas is also a key point in tail gas treatment. In existing tail gas treatment devices, it is often carried out step by step, with cumbersome steps, and most of the waste heat is used for power generation, and the waste heat utilization rate is very low. Summary of the Invention

[0004] The purpose of the present invention is to provide an exhaust gas treatment device for water glass production to solve the above problems.

[0005] The above technical purpose of the present invention is achieved through the following technical solutions: An exhaust gas treatment device for water glass production includes an exhaust gas treatment barrel and a storage barrel inserted into the bottom of the exhaust gas treatment barrel. A purification space is provided in the exhaust gas treatment barrel, and a preheating space is provided in the storage barrel. An exhaust pipe is wound around the gap between the exhaust gas treatment barrel and the storage barrel, and the exhaust pipe is fixed to the exhaust gas treatment barrel. The head end of the exhaust pipe is inserted into the purification space, and the tail end of the exhaust pipe faces the outside. A storage hopper is fixed to the top of the exhaust gas treatment barrel. There is a protrusion at the center of the inner bottom of the storage hopper, and a central pipe is uniformly fixed at the protrusion position of the storage hopper. The tail end of the central pipe communicates with a circle of feed ports opened at the top of the preheating space. A circle of edge pipes is uniformly distributed at the bottom edge part of the storage hopper, and the tail end of the edge pipe communicates with a circle of communication ports opened at the top of the preheating space;

[0006] An air inlet pipe is inserted into the exhaust gas treatment barrel. One end of the air inlet pipe is located outside, and the other end is inserted into the purification space. The tail end of the air inlet pipe in the purification space is fixedly connected to an air inlet ring, and exhaust nozzles are uniformly communicated with the air inlet ring.

[0007] Preferably, support rods are uniformly fixed around the storage hopper. The bottom of each support rod is fixedly connected to a support foot, and a track block is fixed at the end of the support foot close to the storage barrel. The track blocks are all slidably arranged in an annular guide rail, and the annular guide rail is fixedly arranged on the storage barrel.

[0008] Preferably, a water pipe is inserted into the tail gas treatment barrel. One end of the water pipe is located outside and is fixed with a valve, and the other end is located in the purification space.

[0009] Preferably, a baffle is also fixed at the bottom of the support leg, and the baffle is used to block the discharge port opened at the bottom of the preheating space.

[0010] Preferably, a motor is fixed on the inner top plate of the tail gas treatment barrel. A gear is fixed on the motor shaft of the motor, and the gear meshes with an internal gear ring fixed at the center of the top of the storage barrel.

[0011] In summary, the present invention has the following beneficial effects: The present invention adopts the design of a concave tail gas treatment barrel and a convex storage barrel, and an exhaust pipe is wound between the gaps, so that the heat in the tail gas is excellently dissipated into the storage barrel through the exhaust pipe to heat the quartz sand particles in the storage barrel, making full use of the heat in the tail gas. In the treatment of harmful gases in the tail gas, the design of the intake ring and the exhaust nozzle is adopted, and the tail gas can be fully discharged into the liquid for absorbing harmful gases in the tail gas, with high efficiency. Thus, the high-temperature harmful tail gas generated in the production process of water glass is well treated, and the overall structure design is very compact, without occupying space. The form of preheating quartz sand particles with tail gas makes full use of energy and does not involve energy conversion, which is very convenient, clean and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0013] Figure 1 is the first external view schematic diagram of the embodiment of the present invention;

[0014] Figure 2 is the second external view schematic diagram of the embodiment of the present invention;

[0015] Figure 3 is the third external view schematic diagram of the embodiment of the present invention;

[0016] Figure 4 is the fourth external view schematic diagram of the embodiment of the present invention;

[0017] Figure 5 is the first internal structure schematic diagram of the embodiment of the present invention;

[0018] Figure 6 is the second internal structure schematic diagram of the embodiment of the present invention;

[0019] Figure 7 is a schematic enlarged view of part B in the embodiment of the present invention Figure 6 in the embodiment of the present invention;

[0020] In the figure: 11, storage bucket; 12, support feet; 13, annular guide rail; 14, track block; 15, support rod; 16, edge pipe; 17, intake pipe; 18, storage hopper; 19, tail gas treatment bucket; 20, exhaust pipe; 21, baffle; 23, central pipe; 24, preheating space; 25, discharge port; 26, intake ring; 27, exhaust nozzle; 28, purification space; 29, water pipe; 30, valve; 31, communication port; 32, feed port; 33, motor; 34, internal gear ring; 35, gear. Specific embodiments

[0021] Combined with the attached Figures 1-7 A tail gas treatment device for water glass production, comprising a tail gas treatment bucket 19 and a storage bucket 11 inserted into the bottom of the tail gas treatment bucket 19. A purification space 28 is provided in the tail gas treatment bucket 19, a preheating space 24 is provided in the storage bucket 11, and an exhaust pipe 20 is wound between the gap between the tail gas treatment bucket 19 and the storage bucket 11. The exhaust pipe 20 is fixed to the tail gas treatment bucket 19. The head end of the exhaust pipe 20 is inserted into the purification space 28, and the tail end of the exhaust pipe 20 faces the outside. A storage hopper 18 is fixed to the top of the tail gas treatment bucket 19. There is a protrusion at the center of the inner bottom of the storage hopper 18. Central pipes 23 are evenly fixed at the protrusion position of the storage hopper 18. The tail ends of the central pipes 23 communicate with a circle of feed ports 32 opened at the top of the preheating space 24. Edge pipes 16 are evenly distributed in a circle at the bottom edge part of the storage hopper 18. The tail ends of the edge pipes 16 communicate with a circle of communication ports 31 opened at the top of the preheating space 24. Quartz sand particles are filled in the storage hopper 18, and the particle diameter is smaller than that of the edge pipes 16 and the central pipes 23. When the edge pipes 16 and the central pipes 23 are not blocked, the quartz sand particles in the storage hopper 18 will flow into the preheating space 24 from the edge pipes 16 and the central pipes 23 under the action of their own gravity to fill the preheating space 24. The function of the protrusion in the storage hopper 18 is to prevent the quartz sand particles from accumulating here;

[0022] An intake pipe 17 is inserted into the tail gas treatment bucket 19. One end of the intake pipe 17 is located outside, and the other end is inserted into the purification space 28. The tail end of the intake pipe 17 in the purification space 28 is fixedly connected to an intake ring 26. Exhaust nozzles 27 are evenly communicated with the intake ring 26. Tail gas is introduced from the intake pipe 17 and can finally be discharged from each of the exhaust nozzles 27 through the intake ring 26.

[0023] Beneficially, support rods 15 are uniformly fixed around the storage hopper 18. The bottom of each support rod 15 is fixedly connected to a support leg 12. Each support leg 12 is used to support the support rod 15. One end of the support leg 12 close to the storage barrel 11 is fixed with an orbital block 14. Each orbital block 14 is slidably arranged in an annular guide rail 13. The annular guide rail 13 is fixedly arranged on the storage barrel 11.

[0024] Beneficially, a water pipe 29 is inserted into the tail gas treatment barrel 19. One end of the water pipe 29 is located outside and is fixed with a valve 30. The other end is located in the purification space 28. The valve 30 is used to open and close the water pipe 29. Lime water is introduced into the purification space 28 through the valve 30 and the water pipe 29.

[0025] Beneficially, a baffle 21 is also fixed at the bottom of the support leg 12. The baffle 21 is used to block the discharge port 25 opened at the bottom of the preheating space 24.

[0026] Beneficially, a motor 33 is fixed on the inner top plate of the tail gas treatment barrel 19. A gear 35 is fixed on the motor shaft of the motor 33. The gear 35 meshes with an internal gear ring 34 fixed at the center position of the top of the storage barrel 11. After the gear 35 is driven to rotate, it can drive the internal gear ring 34 to rotate through meshing, thereby driving the storage barrel 11 to rotate. The rotation of the storage barrel 11 is limited by the orbital block 14 to the annular guide rail 13.

[0027] Beneficially, the exhaust pipe 20 is made of a material with good heat conductivity, such as brass.

[0028] Usage method of the present invention:

[0029] First, do the preparatory work. Pour the quartz sand particles for water glass production into the storage hopper 18. Under the action of gravity, the quartz sand particles fall from the central pipe 23 and the edge pipe 16 into the preheating space 24 to fill the preheating space 24. Inject lime water into the purification space 28 through the valve 30 and the water pipe 29. The preparation is completed.

[0030] During the production process of water glass, the generated tail gas can be introduced through the intake pipe 17. The tail gas enters the intake ring 26 and finally exits through each exhaust nozzle 27. Sulfur dioxide, carbon dioxide, and dust in the tail gas are fully absorbed, and due to the high temperature of the tail gas, the purification space 28 will be heated. The heat will radiate from the purification space 28 to the storage hopper 18 and the preheating space 24, heating the quartz sand particles in both places. The purified tail gas rises and enters the exhaust pipe 20, discharging from the end of the exhaust pipe 20. When the tail gas moves in the exhaust pipe 20, heat will be dissipated through the exhaust pipe 20. Since the exhaust pipe 20 is wound between the tail gas treatment barrel 19 and the annular guide rail 13, the quartz sand particles in the preheating space 24 can be comprehensively heated;

[0031] When quartz sand is to be taken for the production of water glass, the motor 33 is controlled to start, driving the gear 35 to rotate. The gear 35 drives the internal gear ring 34 to rotate through meshing. The internal gear ring 34 drives the storage barrel 11 to rotate. During rotation, the storage barrel 11 blocks the central pipe 23 and the edge pipe 16, and the quartz sand particles in the storage hopper 18 will not continue to fall. However, the preheated quartz sand particles in the preheating space 24 to a certain temperature are discharged and caught with a container at the bottom. These preheated quartz sand particles are used as raw materials for water glass production, thus greatly saving energy. After completion, the storage barrel 11 is rotated back to its original position, and the quartz sand particles will fill the preheating space 24 again;

[0032] The lime water in the purification space 28 needs to be replaced regularly.

[0033] The above embodiments are only used to illustrate the technical concept and characteristics of the present invention. The purpose is to enable those skilled in this field to understand the content of the present invention and implement it, and it cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. An exhaust gas treatment device for water glass production, characterized in that: It includes an exhaust gas treatment barrel (19) and a storage barrel (11) inserted into the bottom of the exhaust gas treatment barrel (19). A purification space (28) is provided inside the exhaust gas treatment barrel (19), and a preheating space (24) is provided inside the storage barrel (11). An exhaust pipe (20) is wound between the gaps of the exhaust gas treatment barrel (19) and the storage barrel (11). The exhaust pipe (20) is fixed to the exhaust gas treatment barrel (19). The head end of the exhaust pipe (20) is inserted into the purification space (28), and the tail end of the exhaust pipe (20) faces the outside. A storage hopper (18) is fixed to the top of the exhaust gas treatment barrel (19). There is a protrusion at the center of the inner bottom of the storage hopper (18). A central pipe (23) is evenly fixed at the protruding position of the storage hopper (18). The tail end of the central pipe (23) communicates with a circle of feed ports (32) opened at the top of the preheating space (24). A circle of edge pipes (16) is evenly distributed at the bottom edge part of the storage hopper (18). The tail end of the edge pipe (16) communicates with a circle of communication ports (31) opened at the top of the preheating space (24). An intake pipe (17) is inserted into the exhaust gas treatment barrel (19). One end of the intake pipe (17) is located outside, and the other end is inserted into the purification space (28). The tail end of the intake pipe (17) inside the purification space (28) is fixedly connected to an intake ring (26). Exhaust nozzles (27) are evenly communicated with the intake ring (26). A water pipe (29) is inserted into the exhaust gas treatment barrel (19). One end of the water pipe (29) is located outside and is fixed with a valve (30), and the other end is located inside the purification space (28).

2. The tail gas treatment equipment for sodium silicate production according to claim 1, characterized in that: Support rods (15) are evenly fixed around the storage hopper (18). The bottom of each support rod (15) is fixedly connected to a support foot (12). A track block (14) is fixed to the end of the support foot (12) close to the storage barrel (11). The track blocks (14) are all slidably arranged inside an annular guide rail (13). The annular guide rail (13) is fixedly arranged on the storage barrel (11).

3. The tail gas treatment device for sodium silicate production according to claim 2, characterized in that: A baffle (21) is also fixed at the bottom position of the support foot (12). The baffle (21) is used to block a discharge port (25) opened at the bottom of the preheating space (24).

4. The tail gas treatment equipment for water glass production according to claim 1, characterized in that: A motor (33) is fixed to the inner top plate of the exhaust gas treatment barrel (19). A gear (35) is fixed to the motor shaft of the motor (33). The gear (35) meshes with an internal gear ring (34) fixed at the center position of the top of the storage barrel (11).

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