A high-sulfur coal coking desulfurization waste liquid by-product salt resource pretreatment filter

Abstract

The utility model belongs to chemical equipment technical field, specifically disclose a kind of desulfurization waste liquid by-product salt resource pretreatment filter in high-sulfur coal coking, including main part, the top end of main part is buckled with filter component, filter component includes top cover frame, and the top surface of top cover frame is fixed with pressure gauge and exhaust port, and one side edge end of top cover frame is equipped with multiple groups of filtrate outlet, and the inside of filtrate outlet is connected with liquid collection component, and the bottom of liquid collection component is fixed with filter stick, and the both sides of filter stick are distributed with link rod. The utility model drives top end top cover frame and the filter stick and slag ring of integrated connection synchronous lifting by two groups of hydraulic telescopic link, in lifting process, slag ring synchronous completes the adhering residue scraping of cylinder inner wall, makes it be trapped in integrated inner ring, to reach the purpose of quick take out and synchronous cleaning inner wall, reduce impurity residue, improve subsequent filtration quality.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, specifically a pretreatment filter for byproduct salt resources in desulfurization wastewater from high-sulfur coal coking. Background Technology

[0002] High-sulfur coal coking is an important technological direction for the coking industry in terms of resource utilization and cost control. Its core lies in balancing the impact of sulfur content on coke quality and economic efficiency. Coking coal contains 0.5–1.2% sulfur, of which 20–45% enters the raw coal gas as sulfides, forming impurities with NH3 and HCN. Currently, the widely used desulfurization method is HPF wet oxidation technology, which uses hydroquinone, PDS, and ferrous sulfate as catalysts and ammonia as the alkali source. During desulfurization, salts such as ammonium thiosulfate and ammonium thiocyanate are generated. However, when these salts accumulate to a certain level, the desulfurization efficiency drops significantly. Therefore, to ensure the continuous and efficient operation of the desulfurization process, fresh desulfurization liquid must be added, while some of the old desulfurization liquid is removed, resulting in coking coal desulfurization waste liquid. This waste liquid is not only a highly hazardous pollution source but also a usable resource rich in useful components such as ammonium thiocyanate. Direct discharge of these salts would not only pollute the environment but also waste valuable chemical raw materials. Therefore, extracting these salts through salt extraction processes and converting them into industrial byproducts offers significant economic and environmental benefits.

[0003] The common desulfurization wastewater salt extraction process in existing technologies mainly includes the following steps: the desulfurization wastewater discharged from the desulfurization workshop is allowed to settle in a settling tank to initially separate impurities such as suspended sulfur, sulfur mud and coal ash; then, the oxidized sulfur particles are removed by a filter; the pretreated desulfurization wastewater is then decolorized, purified, concentrated, and subjected to hot filtration and by-product recovery; finally, crystallization cooling and resalting are carried out.

[0004] In the pretreatment process described above, a filter is required to remove impurities from the desulfurization wastewater. Common filters typically employ PA / PE precision filters. These filters generally use a carbon steel or stainless steel cylinder with an internal tube sheet for installing filter rods. The desulfurization wastewater is pumped or pressurized from the bottom side of the cylinder, forced through sintered microporous tubes. Particles larger than the pore size are trapped on the surface or inside the pores of the filter tubes. The purified liquid is discharged from the top, completing the filtration process. However, due to the closed-loop design, some particles remain attached to the inner wall of the cylinder during filtration. These particles are difficult to remove and clean quickly, leading to subsequent filtrations where new batches of wastewater come into contact with them, accumulating and affecting the filtration efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a pretreatment filter for byproduct salt resources in desulfurization wastewater from high-sulfur coal coking, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pretreatment filter for byproduct salt resources in desulfurization wastewater from high-sulfur coal coking, comprising a main body, with a filter assembly fastened to the top of the main body; the filter assembly includes a top cover frame, with a pressure gauge and a steam vent fixed to the top surface of the top cover frame, and multiple sets of filtrate outlets fixed through one side of the top cover frame; a liquid collection assembly is internally connected to the filtrate outlets, with a filter rod fixed to the bottom of the liquid collection assembly, connecting rods distributed on both sides of the filter rods, a scraper ring fixed to the bottom of the connecting rods, a rubber ring embedded in the top surface of the scraper ring, and an integrated inner ring fixed to the inner wall of the bottom end of the scraper ring; an upper frame is fixed to the four perimeter of the top cover frame, and hydraulic telescopic rods are fixed to both sides of the bottom surface of the upper frame.

[0007] Furthermore, the top cover frame forms a lifting structure with the main body through the upper frame and the hydraulic telescopic rods on both sides, and the hydraulic telescopic rods are symmetrically distributed along the bottom surface of the upper frame.

[0008] Furthermore, the pressure gauge, the exhaust port, and the filtrate outlet are all fixedly connected to the top cover frame, and the top cover frame is interlocked with the top of the main body around the perimeter.

[0009] Furthermore, the filtrate outlet is connected to the filter rods via a collection assembly, and the filter rods are arranged in a ring at equal intervals along the bottom end of the top cover frame.

[0010] Furthermore, the filter rods are arranged along the bottom surface of the liquid collection assembly, and the filter rods are microporous filter tubes made of rigid polymer material sintered together.

[0011] Furthermore, the slag scraper ring fits snugly around the inner wall of the main body, and the top surface of the slag scraper ring is fixedly connected to the bottom surface of the top cover frame via connecting rods on both sides.

[0012] Furthermore, the integrated inner ring is fixedly connected to the bottom end of the inner wall of the slag scraper ring, and the integrated inner ring and the slag scraper ring are perpendicular to each other.

[0013] Furthermore, the main body includes a cylinder, with a discharge port fixed at the bottom end of the cylinder and an inlet fixed on one side of the outer wall of the discharge port; a lower frame is fixed around the outer wall of the cylinder, and a support rod is fixed around the bottom surface of the lower frame, with a base ring fixed at the bottom end of the support rod, and a soft rubber ring attached to the bottom surface of the base ring.

[0014] Furthermore, the base ring is welded and fixed to the lower frame by a support rod, and the soft rubber ring is attached and embedded along the bottom surface of the base ring.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. After completing the periodic filtration operation, this utility model can drive the top cover frame and the integrated filter rod and scraper ring to lift synchronously through two sets of hydraulic telescopic rods. During the lifting process, the scraper ring simultaneously scrapes off the attached residue on the inner wall of the cylinder, trapping it in the integrated inner ring, thereby achieving the purpose of quick removal and synchronous cleaning of the inner wall, reducing impurity residue and improving the subsequent filtration effect.

[0016] 2. This utility model consists of a cylinder and a top cover frame. Waste liquid can easily flow in through the liquid inlet at the bottom of the cylinder, and the pump pressure assists in filtration. The lower frame of the outer wall of the cylinder is supported by welded support rods and a bottom base ring to keep the bottom structure stable and has a certain elevation structure to facilitate the discharge of residue from the bottom outlet. At the same time, a soft rubber ring is embedded in the bottom surface of the base ring to further increase the friction of the bottom placement and improve stability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the main body of this utility model; Figure 2 This is a three-dimensional structural diagram of the filter assembly of this utility model; Figure 3 This is a side view of the filter assembly of this utility model. Figure 4 This is a three-dimensional structural diagram of the filter rod of this utility model; Figure 5 This is a three-dimensional structural diagram of the slag scraper ring of this utility model; Figure 6 This is a partial side view of the slag scraper ring structure of this utility model.

[0018] In the diagram: 1. Main body; 101. Cylinder; 102. Discharge port; 103. Liquid inlet; 104. Lower frame; 105. Support rod; 106. Base ring; 107. Soft rubber ring; 2. Filter assembly; 201. Top cover frame; 202. Pressure gauge; 203. Exhaust port; 204. Filtrate outlet; 205. Liquid collection assembly; 206. Filter rod; 207. Connecting rod; 208. Sludge scraper ring; 209. Rubber ring; 210. Integrated inner ring; 211. Upper frame; 212. Hydraulic telescopic rod. Detailed Implementation

[0019] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present invention are shown in the drawings. Without conflict, embodiments and features in the embodiments of the present invention can be combined with each other.

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] This embodiment provides, for example Figure 1-4 The filter for pretreatment of by-product salt resources in desulfurization wastewater from high-sulfur coal coking is shown. It includes a main body 1, with a filter assembly 2 fastened to the top of the main body 1. The main body 1 includes a cylinder 101, with a discharge port 102 fixed at the bottom end of the cylinder 101 and an inlet port 103 fixed on one side of the outer wall of the discharge port 102. A lower frame 104 is fixed around the outer wall of the cylinder 101, and a support rod 105 is fixed around the bottom surface of the lower frame 104. A base ring 106 is fixed at the bottom end of the support rod 105, and a soft rubber ring 107 is attached to the bottom surface of the base ring 106.

[0022] like Figure 2-6 As shown, the filter assembly 2 includes a top cover frame 201. A pressure gauge 202 and a steam vent 203 are fixed on the top surface of the top cover frame 201, and multiple sets of filtrate outlets 204 are fixed through one side of the top cover frame 201. The interior of the filtrate outlet 204 is connected to a liquid collection assembly 205. A filter rod 206 is fixed at the bottom of the liquid collection assembly 205. Connecting rods 207 are distributed on both sides of the filter rod 206. A scraper ring 208 is fixed at the bottom of the connecting rod 207. A rubber ring 209 is embedded in the top surface of the scraper ring 208, and an integrated inner ring 210 is fixed on the inner wall of the bottom end of the scraper ring 208. An upper frame 211 is fixed at the four perimeters of the top cover frame 201, and hydraulic telescopic rods 212 are fixed on both sides of the bottom surface of the upper frame 211.

[0023] Furthermore, the top cover frame 201 forms a lifting structure with the main body 1 through the upper frame 211 and the hydraulic telescopic rods 212 on both sides, and the hydraulic telescopic rods 212 are symmetrically distributed along both sides of the bottom surface of the upper frame 211; the pressure gauge 202, the exhaust port 203, and the filtrate outlet 204 are all fixedly connected to the top cover frame 201, and the top cover frame 201 is interlocked with the top of the main body 1 around the perimeter; the filtrate outlet 204 is connected to the filter rod 206 through the liquid collection assembly 205, and the filter rod 206 is along the... The top cover frame 201 is arranged in a ring at equal intervals at its bottom end; the filter rods 206 are arranged along the bottom surface of the liquid collection assembly 205, and the filter rods 206 are microporous filter tubes made of rigid polymer material sintered; the scraper ring 208 is attached to the inner wall of the main body 1 around its perimeter, and the top surface of the scraper ring 208 is fixedly connected to the bottom surface of the top cover frame 201 through connecting rods 207 on both sides; the integrated inner ring 210 is fixedly connected to the bottom end of the inner wall of the scraper ring 208, and the integrated inner ring 210 is perpendicular to the scraper ring 208.

[0024] Furthermore, the base ring 106 is welded and fixed to the lower frame 104 via the support rod 105, and the soft rubber ring 107 is attached and embedded along the bottom surface of the base ring 106.

[0025] In this embodiment, the filter consists of a cylindrical body 101 and a top cover frame 201. Waste liquid can easily flow in through the liquid inlet 103 at the bottom of the cylindrical body 101, and the filtration is assisted by the pump pressure. The lower frame 104 on the outer wall of the cylindrical body 101 is supported by welded support rods 105 and a bottom base ring 106 to ensure the stability of the bottom structure and has a certain elevation structure to facilitate the discharge of residues through the bottom discharge port 102. At the same time, a soft rubber ring 107 is embedded and attached to the bottom surface of the base ring 106, which can further increase the friction of the bottom placement and improve stability.

[0026] In order to provide a stable filtration effect for the pretreatment of desulfurization waste liquid and to facilitate subsequent cleaning, the filter in this embodiment uses multiple sets of filter rods 206 inside the cylinder 101 to filter particulate impurities in the waste liquid, which are discharged from the filtrate outlet 204 along with the liquid collection assembly 205, maintaining a stable filtration effect. The docking parts of each set of filter rods 206 and the liquid collection assembly 205 are all plug-in connected, which can be easily replaced and cleaned later. After completing the periodic filtration operation, the above-mentioned filter can be connected to the hydraulic telescopic rods 212 by using an equal displacement hydraulic motor or a precision diverter valve to distribute the pump output flow evenly to the cylinders of the two hydraulic telescopic rods 212. Subsequently, the two sets of hydraulic telescopic rods 212 drive the top cover frame 201 and the integrated filter rods 206 and scraper rings 208 to lift synchronously. During the lifting process, the scraper rings 208 simultaneously scrape off the attached residues on the inner wall of the cylinder 101, trapping them in the integrated inner ring 210, thereby achieving the purpose of quick removal and synchronous cleaning of the inner wall, reducing impurity residues and improving the subsequent filtration quality.

[0027] In summary, during use, the desulfurization waste liquid is first pumped or pressure differentially into the cylinder 101 through the inlet 103 on the bottom side. The waste liquid is then forced through the filter rod 206 of the sintered microporous tube. Particles larger than the pore size in the waste liquid are trapped on the surface or inside the pores of the filter tube. The purified liquid is collected from the top collection assembly 205 and discharged from the filtrate outlet 204, completing the filtration process. For cleaning, a hydraulic extension rod 212 is connected using an equal displacement hydraulic motor or a precision diverter valve. The pump output flow is evenly distributed to the cylinders of the two hydraulic telescopic rods 212. At this time, the hydraulic telescopic rods 212 are driven synchronously, which drives the upper frame 211 and the top cover frame 201 to rise. At this time, the connecting rods 207 fixed on both sides of the bottom surface of the top cover frame 201 and the bottom scraper ring 208 scrape the inner wall of the filter as it rises, scraping the residual impurities into the integrated inner ring 210 part. Then, it rises together with the filter rod 206, which not only completes the quick removal of the filter structure, but also assists in the cleaning of the inner wall.

[0028] The above description is merely a selection of preferred embodiments of this utility model and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of this utility model in the embodiments is not limited to the specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this utility model.

Claims

1. A pretreatment filter for byproduct salt resources in desulfurization wastewater from high-sulfur coal coking, comprising a main body (1), characterized in that, A filter assembly (2) is fastened to the top of the main body (1); the filter assembly (2) includes a top cover frame (201), a pressure gauge (202) and a steam vent (203) are fixed on the top surface of the top cover frame (201), and multiple sets of filtrate outlets (204) are fixed through one side of the top cover frame (201); the interior of the filtrate outlet (204) is connected to a liquid collection assembly (205), and a filter rod (206) is fixed to the bottom of the liquid collection assembly (205). The filter rod (206) has connecting rods (207) distributed on both sides. A scraper ring (208) is fixed at the bottom end of the connecting rod (207). A rubber ring (209) is embedded in the top surface of the scraper ring (208), and an integrated inner ring (210) is fixed on the inner wall of the bottom end of the scraper ring (208). The top cover frame (201) has an upper frame (211) fixed at the four perimeter. A hydraulic telescopic rod (212) is fixed on both sides of the bottom surface of the upper frame (211).

2. The filter for pretreatment of by-product salt resources in desulfurization wastewater from high-sulfur coal coking according to claim 1, characterized in that, The top cover frame (201) forms a lifting structure with the main body (1) through the upper frame (211) and the hydraulic telescopic rods (212) on both sides, and the hydraulic telescopic rods (212) are symmetrically distributed along the bottom surface of the upper frame (211).

3. The pretreatment filter for byproduct salt resources in desulfurization wastewater from high-sulfur coal coking according to claim 1, characterized in that, The pressure gauge (202), the exhaust port (203), and the filtrate outlet (204) are all fixedly connected to the top cover frame (201), and the top cover frame (201) is fastened to the top of the main body (1) around the perimeter.

4. A pretreatment filter for by-product salt resources in desulfurization wastewater from high-sulfur coal coking according to claim 1, characterized in that, The filtrate outlet (204) is connected to the filter rod (206) through the liquid collection assembly (205), and the filter rod (206) is arranged in a ring at equal intervals along the bottom end of the top cover frame (201).

5. A pretreatment filter for by-product salt resources in desulfurization wastewater from high-sulfur coal coking according to claim 1, characterized in that, The filter rod (206) is arranged along the bottom surface of the liquid collection assembly (205), and the filter rod (206) is a microporous filter tube made of rigid polymer material sintering.

6. A filter for pretreatment of by-product salt resources in desulfurization wastewater from high-sulfur coal coking according to claim 1, characterized in that, The scraper ring (208) fits around the inner wall of the main body (1), and the top surface of the scraper ring (208) is fixedly connected to the bottom surface of the top cover frame (201) by connecting rods (207) on both sides.

7. A filter for pretreatment of by-product salt resources in desulfurization wastewater from high-sulfur coal coking according to claim 1, characterized in that, The integrated inner ring (210) is fixedly connected to the bottom of the inner wall of the slag scraper ring (208), and the integrated inner ring (210) and the slag scraper ring (208) are perpendicular to each other.

8. A filter for pretreatment of by-product salt resources in desulfurization wastewater from high-sulfur coal coking according to claim 1, characterized in that, The main body (1) includes a cylinder (101), a discharge port (102) is fixed at the bottom end of the cylinder (101), and an inlet port (103) is fixed on one side of the outer wall of the discharge port (102); a lower frame (104) is fixed around the outer wall of the cylinder (101), a support rod (105) is fixed around the bottom surface of the lower frame (104), a base ring (106) is fixed at the bottom end of the support rod (105), and a soft rubber ring (107) is attached to the bottom surface of the base ring (106).

9. A filter for pretreatment of by-product salt resources in desulfurization wastewater from high-sulfur coal coking according to claim 8, characterized in that, The base ring (106) is welded and fixed to the lower frame (104) by a support rod (105), and the soft rubber ring (107) is attached and embedded along the bottom surface of the base ring (106).

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