A device for removing sulfur from industrial flue gas using phosphate tailings
By designing a device that utilizes phosphorus tailings, combined with the use of flue gas scrubber and ammonia, the problem of difficulty in effectively removing sulfides in industrial flue gas in the prior art is solved, and an efficient and environmentally friendly sulfur removal effect is achieved.
Patent Information
- Application Number
- CN202421433046.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-21
AI Technical Summary
The prior art is difficult to effectively use phosphorus tailings to remove sulfides in industrial flue gas, resulting in waste of resources and environmental pollution.
A device is designed to achieve efficient removal of sulfur dioxide or other sulfides in industrial flue gas using phosphorus tailings through the combination of baffle plates and ammonia in the flue gas scrubber.
The sulfur washing rate is achieved close to 100%, the process is stable and simple, with high environmental value, and can effectively reduce the emission of the "three wastes".
Smart Images
Figure CN222694381U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a device for removing sulfur from industrial flue gas by utilizing phosphorus tailings. Background Art
[0002] In addition to phosphorus, phosphorus tailings also contain many useful mineral elements, such as calcium, magnesium, manganese, antimony, copper, iron, aluminum, etc., especially rich in calcium and magnesium. The calcium grade (calculated as calcium oxide) can reach about 30%, and the magnesium grade (calculated as magnesium oxide) can reach about 15%. It can be seen that the disposal of phosphorus tailings is also a huge waste of resources. The comprehensive utilization of phosphorus tailings can not only realize the recycling of resources, but also reduce the emission of "three wastes", reduce pollution to the environment, and avoid occupying precious land resources.
[0003] Currently, the most widely used flue gas desulfurization technologies are wet, dry and semi-dry desulfurization. Among them, wet desulfurization has high efficiency, low operating cost and investment, and is widely used in the removal of SO2 in industrial flue gas around the world. Commonly used wet desulfurization technologies include limestone-gypsum method, double alkali method, ammonia method, etc.
[0004] Based on the environmental protection concept of "using waste to treat pollution" and "using waste to treat waste", the use of bulk solid waste phosphate tailings to remove sulfur dioxide or other sulfides from industrial flue gas has a good application prospect. Utility Model Content
[0005] The utility model aims to provide a device for removing sulfur from industrial flue gas by using phosphorus tailings, which can remove sulfur dioxide or other sulfides from industrial flue gas by using phosphorus tailings.
[0006] In order to solve the above problems, the technical solution of the utility model is:
[0007] A device for removing sulfur from industrial flue gas by using phosphate tailings comprises a phosphate tailings conveying belt, a phosphate tailings slurry mixing tank, a phosphate tailings slurry pump, a flue gas washing tower and a washing slurry circulation pump; the tailings conveying belt outlet is connected to the feed inlet of the phosphate tailings slurry mixing tank, the bottom of the phosphate tailings slurry mixing tank is connected to the upper end of the flue gas washing tower through a first pipeline, the phosphate tailings slurry pump is installed on the first pipeline, the bottom of the flue gas washing tower is connected to the top of the flue gas washing tower through a second pipeline, a washing slurry circulation pump is installed on the second pipeline, the lower end of the second pipeline is connected to a phosphoric acid extraction tank through a third pipeline, and the bottom of the flue gas washing tower is connected to a sulfur-containing industrial flue gas inlet pipe.
[0008] A plurality of baffles are provided in the flue gas scrubbing tower, and the baffles are arranged in a staggered manner.
[0009] The second pipeline is connected with an ammonia water pipeline.
[0010] The beneficial effects of the utility model are:
[0011] (1) The process of this device is stable and simple, and the operation is stable.
[0012] (2) The sulfur washing rate of this device can reach almost 100%.
[0013] (3) This device uses waste to treat pollution and waste to treat waste, and has high environmental value. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The utility model is further described below in conjunction with the accompanying drawings:
[0015] Figure 1 It is a structural schematic diagram of the utility model.
[0016] In the figure: phosphate tailings conveying belt 1, phosphate tailings slurry mixing tank 2, phosphate tailings slurry pump 3, first pipeline 4, flue gas washing tower 5, ammonia water pipe 6, second pipeline 7, third pipeline 8, washing slurry circulation pump 9, baffle 10, sulfur-containing industrial flue gas inlet pipe 11. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0018] A device for removing sulfur from industrial flue gas by using phosphate tailings, comprising a phosphate tailings conveying belt 1, a phosphate tailings slurry mixing tank 2, a phosphate tailings slurry pump 3, a flue gas washing tower 5 and a washing slurry circulation pump 9; the outlet of the phosphate tailings conveying belt 1 is connected to the feed inlet of the phosphate tailings slurry mixing tank 2, the bottom of the phosphate tailings slurry mixing tank 2 is connected to the upper end of the flue gas washing tower 5 through a first pipeline 4, the phosphate tailings slurry pump 3 is installed on the first pipeline 4, the bottom of the flue gas washing tower 5 is connected to the top of the flue gas washing tower 5 through a second pipeline 7, the washing slurry circulation pump 9 is installed on the second pipeline 7, the lower end of the second pipeline 7 is connected to a phosphoric acid extraction tank through a third pipeline 8, and the bottom of the flue gas washing tower 5 is connected to a sulfur-containing industrial flue gas inlet pipe 11.
[0019] A plurality of baffles 10 are arranged in the flue gas washing tower 5, and each baffle 10 is arranged in a staggered manner, and a plurality of filter holes are provided on the baffle 10, so as to extend the flue gas flow path and improve the flue gas purification effect.
[0020] The second pipe 7 is connected to an ammonia water pipe 6. Adding ammonia water into the flue gas scrubber 5 can enhance the scrubbing effect.
[0021] When the utility model is in use, phosphorus tailings and water are added to a phosphorus tailings slurry tank 2 through a phosphorus tailings conveying belt 1 in a certain proportion, the phosphorus tailings are adjusted into a slurry with a certain concentration, and are transported to the upper part of a flue gas washing tower 5 through a phosphorus tailings slurry pump 3, sulfur-containing industrial flue gas is input from the bottom of the flue gas washing tower 5, and after countercurrent contact, the phosphorus tailings slurry absorbs sulfur in the sulfur-containing flue gas, and the desulfurized flue gas is discharged from the top of the flue gas washing tower 5, and is discharged up to standard after being washed and purified, a part of the phosphorus tailings slurry that absorbs sulfur in the flue gas is circulated through a washing slurry circulation pump 9, and a part of it is transported to a phosphoric acid extraction tank.
[0022] The contents described in the embodiments of this specification are merely an enumeration of the implementation forms of the utility model concept. The protection scope of the utility model should not be deemed to be limited to the specific forms described in the embodiments. The protection scope of the utility model also extends to equivalent technical means that can be thought of by those skilled in the art based on the concept of the utility model.
Claims
1. A device for removing sulfur from industrial flue gas using phosphate tailings, characterized in that: The invention comprises a phosphate tailings conveying belt (1), a phosphate tailings slurry mixing tank (2), a phosphate tailings slurry pump (3), a flue gas washing tower (5) and a washing slurry circulation pump (9); the outlet of the phosphate tailings conveying belt (1) is connected to the feed inlet of the phosphate tailings slurry mixing tank (2); the bottom of the phosphate tailings slurry mixing tank (2) is connected to the upper end of the flue gas washing tower (5) through a first pipeline (4); the phosphate tailings slurry pump (3) is installed on the first pipeline (4); the bottom of the flue gas washing tower (5) is connected to the top of the flue gas washing tower (5) through a second pipeline (7); the washing slurry circulation pump (9) is installed on the second pipeline (7); the lower end of the second pipeline (7) is connected to a phosphoric acid extraction tank through a third pipeline (8); and the bottom of the flue gas washing tower (5) is connected to a sulfur-containing industrial flue gas inlet pipe (11).
2. A device for removing sulfur from industrial flue gas using phosphate tailings according to claim 1, characterized in that: A plurality of baffles (10) are provided in the flue gas scrubbing tower (5), and the baffles (10) are arranged in a staggered manner.
3. A device for removing sulfur from industrial flue gas using phosphate tailings according to claim 1, characterized in that: The second pipeline (7) is connected to an ammonia water pipeline (6).