Continuous anti-blocking carbonization tower device
By using a continuous anti-blocking carbonization tower device made of corrosion-resistant titanium material, the mass transfer and heat transfer process are strengthened, the corrosion and blockage problems of carbonization tower equipment are solved, and efficient gas-liquid solid three-phase mixing is achieved, and product quality and production capacity are improved.
Patent Information
- Application Number
- CN202422525994.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-10-18
AI Technical Summary
The existing carbonization towers have serious equipment corrosion, uneven gas-liquid mixing, and easy blockage, resulting in poor product quality and reduced production capacity.
The continuous anti-blocking carbonization tower device with corrosion-resistant titanium material is adopted to strengthen the mass transfer and heat transfer process through the flow guide mechanism and stirring paddle, and a diversion cone and defoamer are set to promote full contact between gas, liquid and solid phases, and uniform gas distribution is achieved using a central pipe and a gas distributor.
It improves the mixing effect of gas, liquid and solid phases, enhances mass transfer and heat transfer, avoids equipment corrosion, improves product quality and production capacity, has a large processing volume per unit cross-sectional area and a high conversion rate.
Smart Images
Figure CN223225794U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of carbonization towers, in particular to a continuous anti-blocking type carbonization tower device. Background Art
[0002] Soda ash is one of the most important chemical raw materials. It is widely used in glass, daily chemicals, enamel, papermaking, medicine, textiles, printing and dyeing, leather making and other industries, as well as in people's daily lives, and plays a vital role in the national economy.
[0003] The carbonation tower is a key piece of equipment in soda ash production. Within the tower, mass transfer, crystallization, and heat transfer occur simultaneously, and the three phases of gas, liquid, and solid exist. Numerous factors influence operational quality and production capacity. Traditional carbonation towers in soda ash production are mostly Solvay cast iron towers, utilizing ammoniacal brine to absorb carbon dioxide to produce sodium bicarbonate, which is then calcined and decomposed into sodium carbonate. Due to the presence of three phases—gas, liquid, and solid—in the carbonation process, the structure requires good contact between the gas and liquid phases to prevent solids from sinking and blocking the gas-liquid channel, while also ensuring the timely removal of significant heat of reaction.
[0004] A common carbonization tower currently consists of a base, a bottom, a tower ring, and a tower cover. The tower ring is equipped with a cooling water tank, a feed inlet and exhaust port are located at the top, and a discharge port and air inlet are located at the bottom. Carbon dioxide enters the carbonization tower from the bottom and reacts with the neutralized ammonia mother liquor entering through the top feed port. This process effectively exchanges heat and mass, producing a high-temperature sodium bicarbonate solution and a sub-high-temperature sodium bicarbonate solution that slowly descend from the upper reaction zone of the carbonization tower, exchanging heat with cooling water in the cooling water tank outside the tower ring to reduce its temperature. Some sodium bicarbonate crystals precipitate during this process, ultimately resulting in a carbonized suspension that is discharged through a discharge pipe. The existing common carbonization towers have the following defects: (1) The existing carbonization towers generally adopt cast iron structure, which is heavy and has poor corrosion resistance. After long-term use, the internal parts and the tower body are severely corroded. The corroded iron ions enter the reaction liquid, resulting in a high iron ion content in the product and even the appearance of red alkali, which cannot meet the requirements of high-end users; (2) The existing carbonization tower has the problem of uneven mixing of the high-temperature sodium bicarbonate solution and the gas-liquid of the dioxide tower, which will lead to poor quality of the sodium bicarbonate crystallization product; (3) After long-term production, ammonium salts accumulate in the tower and on the tower wall of the existing carbonization tower, blocking the gas outlet channel, reducing the space of the gas-liquid contact channel of the medium in the tower, and causing the production capacity of the carbonization tower to decrease. Utility Model Content
[0005] In view of the above shortcomings of the prior art, the purpose of the present invention is to provide a continuous anti-blocking carbonization tower device, which adopts corrosion-resistant materials, strengthens the heat transfer and mass transfer processes, and can effectively avoid the problem of material blockage.
[0006] In order to achieve the above objectives, the technical solutions adopted are:
[0007] A continuous anti-clogging carbonization tower device includes a lower cylinder assembly and an upper cylinder assembly above it, the lower cylinder assembly is provided with a gas inlet and a material outlet, the lower cylinder assembly includes a lower cylinder, a guide cylinder is provided inside the lower cylinder, the upper cylinder assembly includes an upper cylinder, the upper end of the upper cylinder is provided with a material inlet and a gas outlet, at least one group of guide mechanisms is provided in the upper cylinder, the guide mechanism is located below the material inlet, and the guide mechanism includes a lift cylinder, a contraction guide cone below the lift cylinder, and a divergence guide cone inside the lift cylinder.
[0008] The beneficial effect of adopting the above technical solution is that: a contraction-type guide cone is provided at the lower inlet of the lift cylinder, which causes the fluid to contract inward and enter the lift cylinder; a divergence-type guide cone is provided inside the lift cylinder, which causes the fluid to diverge outward; and by analogy, multiple stages of lift cylinders and guide cones can be provided to improve the diversion effect.
[0009] On the basis of the above technical solution, the present invention can also make the following improvements:
[0010] Preferably, the gas inlet is connected to a central tube, and the other end of the central tube is connected to a gas distributor.
[0011] The beneficial effect of adopting the above-mentioned preferred technical solution is that: through the central tube and the gas distributor, uniform distribution of gas can be achieved, avoiding excessive local concentration of gas in the tower, thereby improving reaction efficiency and product quality. After distribution, the gas distributor can disturb the reaction liquid at the conical upper head of the carbonization tower, enhance the mixing between the reaction liquids and move them upward.
[0012] Preferably, a demister is provided at the top end of the upper cylinder, more preferably a baffle demister or a cyclone demister.
[0013] The beneficial effects of adopting the above-mentioned preferred technical solution are: the demister can effectively remove foam in the gas, reduce bubbles brought into the liquid phase by the gas, improve the utilization rate of the gas, reduce foam interference during operation, and ensure the stability of the reaction.
[0014] More preferably, the gas outlet is located at the top of the demister.
[0015] Preferably, a lower head is provided below the lower cylinder, and a conical upper head is provided above the lower cylinder.
[0016] Preferably, the upper head is provided with a gas inlet, and the bottom of the lower head is provided with a material outlet.
[0017] Preferably, a spare air inlet is provided at the bottom of the lower head.
[0018] The beneficial effect of adopting the above-mentioned preferred technical solution is that the material outlet and the spare air inlet can be located at the lower head outlet through a three-way connection, wherein the spare air inlet can be used to back-blow air to the material outlet, thereby preventing solid material from accumulating at the material outlet and being unable to be discharged.
[0019] Preferably, a first stirring paddle is provided in the lower head, and a second stirring paddle is provided in the guide tube.
[0020] The beneficial effects of adopting the above-mentioned preferred technical solution are: the stirring paddle can enhance the mixing effect of the materials, increase the reaction rate, ensure the uniform distribution of the reactants, avoid uneven reaction caused by local excessive concentration, and the solid-liquid-gas mixed phase will be forced to be pushed to the vicinity of the conical upper head by the stirring paddle.
[0021] Preferably, a lower cylinder jacket is provided on the circumference of the outer side of the lower cylinder, and the lower cylinder jacket is provided with a cooling water inlet and a first cooling water outlet.
[0022] Preferably, a guide tube jacket is provided on the outer circumference of the guide tube, and the guide tube jacket is provided with a cooling water inlet and a second cooling water outlet.
[0023] The beneficial effect of adopting the above preferred technical solution is that the lower cylinder jacket and the guide tube jacket share the same cooling water inlet, and the cooling water is divided into two pipelines through the cooling water inlet to flow to the lower cylinder jacket and the guide tube jacket respectively.
[0024] Preferably, structured packing is provided inside the lift cylinder and / or between the lift cylinder and the upper cylinder.
[0025] The beneficial effects of adopting the above preferred technical solution are: the structured packing can increase the contact area between gas and liquid, improve mass transfer efficiency, enhance the effect of the reaction, and at the same time contribute to the uniform distribution of gas and reduce the formation of dead zones.
[0026] Preferably, the first stirring paddle and the second stirring paddle are connected to a stirring motor.
[0027] The beneficial effect of adopting the above preferred technical solution is that the stirring motor is used to drive the first stirring paddle and the second stirring paddle to rotate.
[0028] The beneficial effects of adopting the above further technical solution are:
[0029] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention proposes a new type of carbonization tower, which is suitable for continuous reactions with high solid content, can fully contact the gas-liquid-solid three-phase system, promote mixing, increase the interphase contact area and transfer coefficient, strengthen mass transfer and heat transfer, and improve conversion rate. The carbonization tower has the characteristics of being not easy to clog, having a large processing capacity per unit cross-sectional area, and having a high conversion rate. The carbonization tower is made of corrosion-resistant titanium material to avoid equipment corrosion affecting product quality; it strengthens the degree of gas-liquid-solid three-phase mixing inside the carbonization tower, strengthens mass transfer and heat transfer, and improves conversion rate; the carbonization tower is not easy to clog and has a large processing capacity per unit cross-sectional area. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 This is a structural diagram of the continuous anti-clogging carbonization tower device of the utility model.
[0031] The figures are marked as follows: 11, gas inlet; 12, material outlet; 13, lower cylinder; 131, lower cylinder jacket; 132, cooling water inlet; 133, first cooling water outlet; 14, guide tube; 141, guide tube jacket; 143, second cooling water outlet; 15, center tube; 16, gas distributor; 17, lower head; 171, spare air inlet; 18, upper head; 19, first stirring paddle; 20, second stirring paddle; 21, upper cylinder; 22, material inlet; 23, gas outlet; 24, guide mechanism; 241, lift cylinder; 242, contraction guide cone; 243, divergence guide cone; 25, demister; 26, structured packing; 31, stirring motor. DETAILED DESCRIPTION
[0032] The present invention is described below with reference to examples. The examples are only used to explain the present invention and are not used to limit the scope of the present invention.
[0033] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.
[0034] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.
[0035] A continuous anti-clogging carbonization tower device includes a lower cylinder assembly and an upper cylinder assembly above it, the lower cylinder assembly is provided with a gas inlet 11 and a material outlet 12, the lower cylinder assembly includes a lower cylinder 13, a guide cylinder 14 is provided inside the lower cylinder 13, the upper cylinder assembly includes an upper cylinder 21, the upper end of the upper cylinder 21 is provided with a material inlet 22 and a gas outlet 23, at least one group of guide mechanisms 24 is provided in the upper cylinder 21, the guide mechanism 24 is located below the material inlet 22, and the guide mechanism 24 includes a lift cylinder 241, a contraction guide cone 242 below the lift cylinder 241, and a divergence guide cone 243 inside the lift cylinder 241.
[0036] As a preferred embodiment, the gas inlet 11 is connected to a central tube 15 , and the other end of the central tube 15 is connected to a gas distributor 16 .
[0037] As a preferred embodiment, a demister 25 is provided at the top end of the upper cylinder 21, and in this embodiment, a baffle demister is selected.
[0038] In a specific embodiment, the gas outlet 23 is located at the top of the demister 25 .
[0039] In an optional embodiment, specifically, a lower sealing head 17 is provided below the lower cylinder 13 , and a conical upper sealing head 18 is provided above the lower cylinder 13 .
[0040] In this embodiment, the upper head 18 is provided with a gas inlet 11 , and the bottom of the lower head 17 is provided with a material outlet 12 .
[0041] In this embodiment, a spare air inlet 171 is provided at the bottom of the lower head 17 .
[0042] In this embodiment, a first stirring paddle 19 is provided in the lower head 17 , and a second stirring paddle 20 is provided in the guide tube 14 .
[0043] As a preferred embodiment, a lower cylinder jacket 131 is circumferentially provided on the outer side of the lower cylinder 13 , and the lower cylinder jacket 131 is provided with a cooling water inlet 132 and a first cooling water outlet 133 .
[0044] In this embodiment, a guide tube jacket 141 is provided on the outer circumference of the guide tube 14 . The guide tube jacket 141 is provided with a cooling water inlet 132 and a second cooling water outlet 143 .
[0045] As a preferred embodiment, a structured packing 26 is provided inside the lift cylinder 241 and / or between the lift cylinder 241 and the upper cylinder 21 .
[0046] In this embodiment, the first stirring paddle 19 and the second stirring paddle 20 are connected to a stirring motor 31 .
[0047] During operation, ammonia salt solution enters from the material inlet 22 at the top of the carbonizing tower, and carbon dioxide gas enters from the gas inlet 11 connected to the central tube 15 of the carbonizing tower. After being distributed by the gas distributor 16, it disturbs the reaction liquid at the conical upper head 18 of the carbonizing tower, strengthens the mixing between the reaction liquids and moves upward. The mixed phase flow rate is relatively high at the center of the contracting guide cone 242. The reaction liquid is carried upward by the gas at the center of the contracting guide cone 242 and enters the middle of the riser 241. When it encounters the divergent guide cone 243, the flow rate in the central area of the riser 241 decreases, while the flow rate in the edge area increases. The reaction liquid moves downward at the edge of the previous contracting guide cone 242, and is then carried upward from the center of the contracting guide cone 242 by the rising gas. That is, the reaction liquid completes a circular flow at the contracting guide cone 242. The liquid-solid reaction liquid from the contracting guide cone 242 continues to move upward, and through the action of the multi-stage riser 241 and guide cones, a multi-stage circular flow reaction process is completed.
[0048] Due to its high density, the sodium bicarbonate solid produced by the reaction flows downward step by step, entering the lower cylinder 13. Agitators are installed inside the lower head 17 and the draft tube 14 at the bottom of the lower cylinder 13. The agitators force the solid-liquid-gas mixture to the vicinity of the conical upper head 18. Most of the gas and liquid phases are propelled to the riser 241 by the disturbance of the air intake from above. Most of the solid and liquid phases flow downward from the outside of the draft tube 14 and the inside of the lower cylinder 13, completing a circulation flow. The heat released by the reaction can be removed through cooling water in the lower cylinder jacket 131 and the draft tube jacket 141. A material outlet 12 is provided at the bottom of the lower head 17.
[0049] The above circulation flow strengthens the mixing of the gas, liquid and solid phases, increases the contact probability of the reactants, and improves the reaction rate. After the reaction is completed, the liquid-solid reaction liquid is discharged from the lower material outlet 12 of the carbonization tower. When the gas passes through the demister 25, the entrained liquid and solid are separated and then discharged from the gas outlet 23 at the top of the carbonization tower.
[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A continuous anti-blocking carbonization tower device, characterized in that: It includes a lower cylinder assembly and an upper cylinder assembly above the lower cylinder assembly, the lower cylinder assembly is provided with a gas inlet and a material outlet, the lower cylinder assembly includes a lower cylinder, a guide cylinder is provided inside the lower cylinder, the upper cylinder assembly includes an upper cylinder, the upper end of the upper cylinder is provided with a material inlet and a gas outlet, at least one group of guide mechanisms is provided in the upper cylinder, the guide mechanism is located below the material inlet, the guide mechanism includes a lift cylinder, a contraction guide cone below the lift cylinder and a divergence guide cone inside the lift cylinder.
2. The continuous anti-blocking carbonization tower device according to claim 1, characterized in that: The gas inlet is connected to a central tube, and the other end of the central tube is connected to a gas distributor.
3. The continuous anti-blocking carbonization tower device according to claim 1, characterized in that: A demister is provided at the top end of the upper cylinder.
4. The continuous anti-blocking carbonization tower device according to claim 1, characterized in that: A lower sealing head is provided below the lower cylinder, and a conical upper sealing head is provided above the lower cylinder.
5. The continuous anti-clogging carbonization tower device according to claim 4, characterized in that: The upper head is provided with a gas inlet, and the bottom of the lower head is provided with a material outlet.
6. The continuous anti-clogging carbonization tower device according to claim 5, characterized in that: A first stirring paddle is provided in the lower head, and a second stirring paddle is provided in the guide tube.
7. The continuous anti-clogging carbonization tower device according to claim 1, characterized in that: A lower cylinder jacket is provided on the circumferential outer side of the lower cylinder, and the lower cylinder jacket is provided with a cooling water inlet and a first cooling water outlet.
8. The continuous anti-clogging carbonization tower device according to claim 1, characterized in that: A guide tube jacket is provided on the outer circumference of the guide tube, and the guide tube jacket is provided with a cooling water inlet and a second cooling water outlet.
9. The continuous anti-clogging carbonization tower device according to any one of claims 1 to 8, characterized in that: Structured packing is provided inside the lift cylinder and / or between the lift cylinder and the upper cylinder.