CN216638925U

CN216638925U - Comprehensive utilization device for reaction of sulfur and phosphogypsum

Info

Publication number: CN216638925U
Application number: CN202123244898.1U
Authority: CN
Inventors: 魏天荣; 方超; 肖林波; 田承涛
Original assignee: Hubei Sanning Chemical Co Ltd
Current assignee: Yichang Shengchuangxin Material Co ltd; Hubei Sanning Chemical Co Ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-05-31
Anticipated expiration: 2031-12-22

Abstract

The utility model provides a comprehensive utilization device for reaction of sulfur and phosphogypsum, which comprises a crusher, a conveyor and a boiling combustion furnace, wherein the crusher is provided with a crushing cavity, a rotatable crushing roller is arranged in the crushing cavity, one end of the conveyor is arranged below the crushing cavity, the boiling combustion furnace comprises a feed inlet and a slag outlet, a combustion chamber is also arranged in the boiling combustion furnace, the combustion chamber is communicated with the feed inlet and the slag outlet, an air inlet is arranged below the combustion chamber, an exhaust outlet is arranged above the combustion chamber, and the other end of the conveyor is arranged above the feed inlet.

Description

Comprehensive utilization device for reaction of sulfur and phosphogypsum

Technical Field

The utility model relates to a comprehensive utilization device for reacting sulfur and phosphogypsum, in particular to a device for preparing cement raw meal and SO2 gas by mixing and calcining sulfur and phosphogypsum.

Background

The phosphogypsum is a byproduct in the production of wet-process phosphoric acid, the yield of the phosphogypsum of the company is about 250 million tons in one year, and the stacking of the phosphogypsum not only needs a large amount of land resources, but also causes environmental hidden dangers, so that the problem of large-scale comprehensive utilization of the phosphogypsum is solved, not only can a large amount of land be avoided being occupied and the environment be polluted, but also the sustainable development of the phosphate fertilizer industry can be realized, and the method has great significance.

The preparation of sulfuric acid and the co-production of cement by reductive decomposition of phosphogypsum by sulfur is one of the most effective ways of solving the industrial pollution of phosphogypsum, reducing land occupation and effectively utilizing sulfur resources, so a device capable of reducing phosphogypsum is urgently needed, and the problems of low utilization rate of the phosphogypsum and resource waste are solved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a comprehensive utilization device for reacting sulfur and phosphogypsum, and solves the problems of low utilization rate of phosphogypsum and resource waste.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: the utility model provides a comprehensive utilization device of sulphur and ardealite reaction, includes that breaker, conveyer and boiling fire burning furnace, and the breaker is equipped with broken chamber, is equipped with rotatable crushing roller in the broken chamber, and conveyer one end is established in broken chamber below, and the boiling fires burning furnace and includes feed inlet and slag notch, still is equipped with the combustion chamber in the boiling burning furnace, and combustion chamber and feed inlet and slag notch intercommunication are equipped with the air inlet below the combustion chamber, and the combustion chamber top is equipped with the gas vent, and the conveyer other end is established above the feed inlet.

In the preferred scheme, the crushing roller is equipped with a plurality of broken pieces, and a plurality of broken pieces are heliciform eccentric arrangement, and broken intracavity wall is equipped with a plurality of interlock pieces, interlock piece and the crisscross interlock of broken piece.

In the preferred scheme, the crusher further comprises an underframe, a bearing seat is arranged on the underframe, a transmission shaft is further arranged, the transmission shaft penetrates through the crushing cavity, the transmission shaft is rotatably sleeved with the bearing seat, the crushing roller is sleeved with the transmission shaft, and a speed reduction crushing motor is arranged at one end of the transmission shaft.

In the preferred scheme, the conveyer includes the conveyer belt of interior concavity, and the conveyer belt both sides are equipped with the baffle, and conveyer one end is equipped with speed reduction conveying motor, and speed reduction conveying motor drive conveyer belt rotates.

In the preferred scheme, the conveyer still includes the sloping frame, and the sloping frame both ends are equipped with rotatable cylinder, and the conveyer belt rotates on two cylinders, and the sloping frame lower extreme is equipped with height-adjustable's lower margin.

In the preferred scheme, still be equipped with the lifting machine, the lifting machine includes the promotion conveyer belt of rotatable, and promotion conveyer belt lateral surface is equipped with the baffle, and the lifting machine lower extreme is equipped with the feeder hopper, and the lifting machine upper end is equipped with the discharge gate, and the discharge gate is established in broken chamber top.

In the preferred scheme, a cone-shaped chute barrel is arranged below the crushing cavity and is arranged above one end of the conveyor.

The utility model has the beneficial effects that: SO2 and CaO are prepared by calcining sulfur and phosphogypsum, SO that accumulated phosphogypsum is consumed, raw materials for preparing cement and sulfuric acid are obtained, and the utilization rate of resources is high; the process is stable and simple, and can treat a large amount of phosphogypsum; the heat source is provided by utilizing the combustion of the sulfur, so that the environment is protected and the energy is saved; in the preferred scheme, the hoister, the crusher, the conveyor and the boiling combustion furnace are arranged in a streamlined manner, so that the automation degree is high, the labor intensity is reduced, and the production efficiency is improved.

Drawings

The utility model is further illustrated by the following figures and examples.

FIG. 1 is a schematic of the present invention.

Fig. 2 is a schematic view of the crusher of the present invention.

Fig. 3 is a schematic view of the conveyor of the present invention.

Fig. 4 is a schematic view of a boiling burner of the present invention.

In the figure: a hoist 1; a feed hopper 101; lifting the conveyor belt 102; a discharge port 103; a deceleration lift motor 104; a crusher 2; a crushing chamber 201; a deceleration crushing motor 202; a drive shaft 203; a chute 204; a bite piece 205; a crushing roller 206; a crushing slice 207; a bearing seat 208; a conveyor 3; a conveyor belt 301; a tilt frame 302; a deceleration conveying motor 303; a baffle 304; a ground leg 305; a drum 306; a fluidized bed combustion furnace 4; a feed inlet 401; a combustion chamber 402; a uniform air plate 403; an air inlet 404; a slag outlet 405; an exhaust port 406; a chassis 5; an elevating frame 6; and a leg (7).

Detailed Description

Example 1:

as shown in fig. 1-4, a comprehensive utilization device for reaction of sulfur and phosphogypsum comprises a crusher 2, a conveyor 3 and a boiling combustion furnace 4, wherein the crusher 2 is provided with a crushing cavity 201, a rotatable crushing roller 206 is arranged in the crushing cavity 201, one end of the conveyor 3 is arranged below the crushing cavity 201, the boiling combustion furnace 4 comprises a feed inlet 401 and a slag outlet 405, a combustion chamber 402 is further arranged in the boiling combustion furnace 4, the combustion chamber 402 is communicated with the feed inlet 401 and the slag outlet 405, an air inlet 404 is arranged below the combustion chamber 402, a porous air-homogenizing plate 403 is arranged above the air inlet 404, a mixture of sulfur and phosphogypsum in the combustion chamber 402 is blown up by clean air, the sulfur participates in combustion after ignition to generate a large amount of heat energy so as to enable the temperature to reach the reaction temperature quickly, an air outlet 406 is arranged above the combustion chamber 402, and the other end of the conveyor 3 is arranged above the feed inlet 401.

Adding sulfur and phosphogypsum into a crusher 2 according to a certain proportion, adding the crushed and mixed material into a boiling combustion furnace 4 according to a certain amount through a conveyor 3, introducing air into a bottom air inlet 404 of the boiling combustion to enable the mixed material to be suspended on a fluidized bed in the boiling combustion furnace, igniting, fully combusting, wherein the main component of furnace gas is SO2, conveying the mixed material to a sulfur acid-making workshop from an upper end exhaust port 406 of the combustion furnace through a fan, and the main component of slag left after combustion is CaO, overflowing through a slag outlet 405 of the boiling combustion furnace 4, and conveying the slag to a cement manufacturer through a slag belt to serve as a raw material.

As the sulfur is easy to be oxidized, the whole conveying process can be sealed for conveying and isolating oxygen.

In a preferred scheme, the crushing roller 206 is provided with a plurality of crushing pieces 207, the crushing pieces 207 are spirally and eccentrically arranged, the inner wall of the crushing cavity 201 is provided with a plurality of meshing pieces 205, the meshing pieces 205 and the crushing pieces 207 are meshed in a staggered manner, and after the sulfur and the phosphogypsum are added into the crushing cavity 201, the sulfur and the phosphogypsum are meshed, crushed, refined and mixed by matching of the meshing pieces 205 and the crushing pieces 207.

In the preferred scheme, the crusher 2 further comprises an underframe 5, a bearing seat 208 is arranged on the underframe 5, a transmission shaft 203 is further arranged, the transmission shaft 203 penetrates through the crushing cavity 201, the transmission shaft 203 is rotatably sleeved with the bearing seat 208, the crushing roller 206 is sleeved with the transmission shaft 203, a speed reduction crushing motor 202 is arranged at one end of the transmission shaft 203, and the speed reduction crushing motor 202 drives the crushing roller 206 to rotate.

In the preferred scheme, the conveyor 3 comprises an inward concave conveying belt 301, baffle plates 304 are arranged on two sides of the conveying belt 301 to prevent materials from rolling off from two sides, a speed reduction conveying motor 303 is arranged at one end of the conveyor 3, and the speed reduction conveying motor 303 drives the conveying belt 301 to rotate.

In a preferable scheme, the conveyor 3 further comprises an inclined frame 302, rotatable rollers 306 are arranged at two ends of the inclined frame 302, the conveyor belt 301 rotates around the two rollers 306, a plurality of supporting rollers are further arranged below the conveyor belt 301 on the inclined frame 302, and the lower end of the inclined frame 302 is provided with a height-adjustable anchor 305 for adjusting the inclination angle of the inclined frame 302.

Still be equipped with bed hedgehopping frame 6, conveyer 3 establishes on bed hedgehopping frame 6, still is equipped with landing leg 7 on bed hedgehopping frame 6, and landing leg 7 supports chassis 5.

In the preferred scheme, still be equipped with lifting machine 1, make things convenient for automatic feeding, lifting machine 1 includes rotatable promotion conveyer belt 102, and promotion conveyer belt 102 lateral surface is equipped with the baffle, and 1 lower extreme of lifting machine is equipped with feeder hopper 101, and 1 upper end of lifting machine is equipped with discharge gate 103, and discharge gate 103 is established in broken chamber 201 top, and 1 upper end of lifting machine is equipped with speed reduction lifting motor 104, and speed reduction lifting motor 104 drives promotion conveyer belt 102 and rotates.

In the preferred scheme, a cone-shaped chute 204 is arranged below the crushing cavity 201, the upper end of the chute 204 is communicated with the crushing cavity 201, and the lower end of the chute 204 is arranged above one end of the conveyor 3, so that the materials can directly fall onto the conveyor belt 301.

Example 2:

drying and mixing high-sulfur coal (the sulfur content is more than or equal to 3 percent) and phosphogypsum, then sending the mixture into a fluidized bed combustion furnace, controlling the furnace temperature to be 800-1350 ℃, releasing SO2 after reaction, wherein the CaO (mass percent) in the residues is more than or equal to 70 percent, and when the high-sulfur coal and the phosphogypsum are used as cement with the production grade of more than 425, the decomposition rate of the phosphogypsum can reach more than 95 percent, and the desulfurization rate is more than 90 percent.

Example 3:

the phosphogypsum is prepared into beta-hemihydrate gypsum, the beta-hemihydrate gypsum is mixed with sulfur and then calcined for 0.5 to 3 hours at the temperature of 1000-1400 ℃, SO2 is released, the residue is used for producing cement, the decomposition rate of the phosphogypsum can reach more than 98 percent, and the desulfurization rate is more than 95 percent.

The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the utility model.

Claims

1. A comprehensive utilization device for reaction of sulfur and phosphogypsum is characterized in that: including breaker (2), conveyer (3) and boiling combustion furnace (4), breaker (2) are equipped with broken chamber (201), be equipped with rotatable crushing roller (206) in broken chamber (201), establish in broken chamber (201) below conveyer (3) one end, boiling combustion furnace (4) are including feed inlet (401) and slag notch (405), still be equipped with combustion chamber (402) in boiling combustion furnace (4), combustion chamber (402) and feed inlet (401) and slag notch (405) intercommunication, combustion chamber (402) below is equipped with air inlet (404), combustion chamber (402) top is equipped with gas vent (406), establish in feed inlet (401) top conveyer (3) other end.

2. The comprehensive utilization device for the reaction of the sulfur and the phosphogypsum, according to the claim 1, is characterized in that: crushing roller (206) are equipped with a plurality of broken pieces (207), and a plurality of broken pieces (207) are heliciform eccentric settings, and broken chamber (201) inner wall is equipped with a plurality of interlock pieces (205), interlock piece (205) and broken piece (207) interlock.

3. A comprehensive utilization device for the reaction of sulfur and phosphogypsum according to claim 2, which is characterized in that: crusher (2) still include chassis (5), are equipped with bearing frame (208) on chassis (5), still are equipped with transmission shaft (203), and broken chamber (201) is run through in transmission shaft (203), and transmission shaft (203) rotate with bearing frame (208) and cup joint, and crushing roller (206) cup joint with transmission shaft (203), and transmission shaft (203) one end is equipped with speed reduction crushing motor (202).

4. The comprehensive utilization device for the reaction of the sulfur and the phosphogypsum, according to the claim 1, is characterized in that: the conveyer (3) includes concave conveyer belt (301), and conveyer belt (301) both sides are equipped with baffle (304), and conveyer (3) one end is equipped with speed reduction conveying motor (303), and speed reduction conveying motor (303) drive conveyer belt (301) rotate.

5. The comprehensive utilization device for the reaction of the sulfur and the phosphogypsum, according to claim 4, is characterized in that: the conveyor (3) further comprises an inclined frame (302), rotatable rollers (306) are arranged at two ends of the inclined frame (302), the conveying belt (301) rotates around the two rollers (306), and the lower end of the inclined frame (302) is provided with a height-adjustable anchor (305).

6. The comprehensive utilization device for the reaction of the sulfur and the phosphogypsum, according to the claim 1, is characterized in that: still be equipped with lifting machine (1), lifting machine (1) is including rotatable promotion conveyer belt (102), and promotion conveyer belt (102) lateral surface is equipped with the baffle, and lifting machine (1) lower extreme is equipped with feeder hopper (101), and lifting machine (1) upper end is equipped with discharge gate (103), and discharge gate (103) are established in broken chamber (201) top.

7. The comprehensive utilization device for the reaction of the sulfur and the phosphogypsum, according to the claim 1, is characterized in that: a cone-shaped chute (204) is arranged below the crushing cavity (201), and the chute (204) is arranged above one end of the conveyor (3).