An integrated treatment device for coal-based semi-coke wastewater

Abstract

The present invention discloses an integrated treatment device for coal-based semi-coke wastewater, which relates to the technical field of wastewater treatment and includes support legs. A platform plate is fixedly installed on the support legs. A slag filtering assembly is rotatably installed on the platform plate through a first support plate, a second support plate, and a third support plate. The slag filtering assembly includes a sedimentation barrel, on which a rotating track, a rotating water outlet, a rotating water inlet, a sediment collection tank, and a slag discharge port are provided. The slag filtering assembly provided by the present invention can preliminarily filter out the coal slag in the semi-coke wastewater, prevent blockage of the equipment, and thus improve the treatment speed of the wastewater. The provided limiting assembly can automatically and regularly discharge the coal slag filtered by the slag filtering assembly, so as to ensure that the slag filtering effect of the slag filtering assembly will not be reduced after long-term operation. The provided oil separation part can separate the floating oil, water, and heavy oil in the wastewater, and solve the problem that the excessive oil content in the semi-coke wastewater will cause blockage of the phenolic recovery heat exchanger and the trays.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and particularly to an integrated treatment device for coal-based semi-coke wastewater. Background Art

[0002] Semi-coke wastewater, also known as semi-coke wastewater, refers to an industrial wastewater formed during the medium and low temperature dry distillation (about 600 - 800 °C) process of low-rank coal (non-caking coal, weakly caking coal, long-flame coal), as well as during the gas purification and semi-coke steam quenching processes. This wastewater has a complex composition and contains a large number of refractory and highly toxic pollutants, such as organic pollutants like benzene series, phenols, polycyclic aromatic hydrocarbons, nitrogen and oxygen heterocyclic compounds, as well as inorganic pollutants such as heavy metals. It is a typical highly polluted and highly toxic industrial wastewater. Among them, the oil content in semi-coke wastewater seriously exceeds the standard, which will cause fouling and blockage of subsequent phenolic recovery heat exchangers and trays.

[0003] In the prior art, a patent for invention with the publication number CN116462251A discloses a semi-coke wastewater purification device. The technical solution adopted by this device is prone to fouling and blockage of the phenolic recovery heat exchanger and trays after long-term operation. Therefore, it is necessary to regularly stop the machine for equipment maintenance and cannot operate continuously for a long time. Summary of the Invention

[0004] To overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: an integrated treatment device for coal-based semi-coke wastewater, comprising a support leg, a platform plate fixedly mounted on the support leg, a filter residue assembly rotatably mounted on the platform plate through a first support plate, a second support plate and a third support plate, the filter residue assembly comprising a sedimentation barrel, a rotating rail, a rotating water outlet, a rotating water inlet, a sedimentation collection tank and a slag discharge port are arranged on the sedimentation barrel, a screw is rotatably arranged in the sedimentation collection tank, a gear is rotatably arranged on the outer side of the sedimentation collection tank, and a baffle is also fixedly mounted on the inner wall of the sedimentation barrel; it also comprises an oil separation part, the oil separation part comprises a separation tank, a first baffle plate, a second baffle plate, a fourth baffle plate and a third baffle plate are fixedly mounted in the separation tank, a top oil discharge pipe and a pump body are fixedly mounted on the top of the separation tank through a top support frame, the middle part of the top oil discharge pipe is connected to the water inlet of the pump body, a bottom oil discharge port is also arranged at the bottom of the separation tank, and the bottom discharge port A blocking plate sliding chamber is fixedly installed on the oil port, a sealing blocking plate is slidably installed in the blocking plate sliding chamber, a tension spring support plate is also fixedly installed on the end of the blocking plate sliding chamber, a reset tension spring is fixedly installed between the tension spring support plate and the sealing blocking plate, an electromagnet that magnetically cooperates with the sealing blocking plate is also fixedly installed on the bottom oil discharge port, and a drain pipe is also fixedly installed on the bottom of the separation tank through a valve; a limiting component is fixedly installed on the second supporting plate, and the limiting component includes a supporting table, a gearbox is fixedly installed on the supporting table, an arc-shaped rack that meshes with the gear is slidably installed on the supporting table through two sliding rods, and a downward pressure tension spring is surrounded on the two sliding rods, and the two ends of the downward pressure tension spring are respectively fixedly connected to the arc-shaped rack and the supporting table, a bump column is fixedly installed on the arc-shaped rack, a cam that slidably cooperates with the bump column is fixedly installed on the output shaft of the gearbox, and the input shaft of the gearbox is fixedly connected to one of the support rollers.

[0005] Preferably, there are at least twelve sedimentation collection tanks, and the twelve sedimentation collection tanks are evenly distributed on the surface of the sedimentation barrel, each sedimentation collection tank is correspondingly provided with a screw and a gear, and the number of the baffles is the same as the number of the sedimentation collection tanks.

[0006] Preferably, three support rollers are rotatably installed between the third support plate and the second support plate, the support rollers are in rolling cooperation with the rotating rail, a slag discharge groove is provided on the first support plate, and the first support plate is in sliding sealing cooperation with the end surface of the slag discharge port.

[0007] Preferably, a driving motor is fixedly mounted on the platform plate, and an output shaft of the driving motor is connected to the sedimentation bucket via a transmission belt.

[0008] Preferably, a collection cover is rotatably installed on the rotating water outlet. The collection cover is fixedly installed on the third support plate through two collection cover brackets. A water inlet trough is fixedly installed at the bottom of the collection cover. A water inlet and a drain outlet are also provided on the collection cover, and the water inlet trough is fixedly installed on the drain outlet.

[0009] Preferably, the distance between the bottom end of the first baffle and the bottom surface of the separation tank is three-quarters of the length of the first baffle itself, and the distance between the bottom end of the second baffle and the bottom surface of the separation tank is one-quarter of the length of the second baffle itself.

[0010] Preferably, the fourth baffle is fixedly installed on the bottom surface of the separation tank. The length of the third baffle is the same as that of the second baffle, and the third baffle is fixedly installed on the bottom surface of the separation tank.

[0011] Preferably, both ends of the top oil discharge pipe are respectively arranged between the first baffle and the second baffle and above the third baffle, and there is a gap between the top oil discharge pipe and the top end of the third baffle.

[0012] Compared with the prior art, the invention has the following beneficial effects: (1) The slag filtering assembly provided by the invention can initially filter out the coal slag in the semi-coke wastewater, prevent blockage of the equipment, and thus improve the treatment speed of the wastewater; (2) The limiting assembly provided by the invention can automatically and regularly discharge the coal slag filtered by the slag filtering assembly, so as to ensure that the slag filtering effect of the slag filtering assembly will not be reduced after long-term operation; (3) The oil separation part provided by the invention can separate the floating oil, water, and heavy oil in the wastewater, and solve the problem that the excessive oil content in the semi-coke wastewater will cause blockage of the phenol recovery heat exchanger and the trays. Description of the Drawings

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 It is a schematic diagram of the structure at the pump body of the present invention.

[0015] Figure 3 It is a sectional view of the structure of the collection cover of the present invention.

[0016] Figure 4 It is a schematic diagram of the structure of the slag filtering assembly of the present invention.

[0017] Figure 5 It is a schematic diagram of the structure at the slag discharge trough of the present invention.

[0018] Figure 6 It is a schematic diagram of the structure at the gear of the present invention.

[0019] Figure 7 It is of the present invention Figure 6 Schematic diagram of the structure at A in

[0020] Figure 8 Schematic structural diagram of the limiting component of the present invention.

[0021] Figure 9 Schematic structural diagram of the cam part of the present invention.

[0022] Figure 10 Schematic structural diagram of the oil separation part of the present invention.

[0023] Figure 11 Schematic structural diagram of the sealing plug plate of the present invention.

[0024] In the figure: 101 - separation tank; 102 - water inlet tank; 103 - first baffle; 104 - second baffle; 105 - top oil discharge pipe; 106 - third baffle; 107 - top support frame; 108 - valve; 109 - bottom oil discharge port; 110 - electromagnet; 111 - sealing plug plate; 112 - reset tension spring; 113 - tension spring support plate; 114 - plug plate sliding chamber; 115 - drain pipe; 116 - pump body; 117 - collection hood; 1171 - water inlet; 1172 - water discharge port; 118 - fourth baffle; 201 - sedimentation bucket; 2011 - rotating track; 2012 - rotating water outlet; 2013 - rotating water inlet; 2014 - sediment collection tank; 2015 - slag discharge port; 202 - shielding baffle; 203 - support roller; 204 - screw; 205 - gear; 301 - support platform plate; 302 - gearbox; 303 - arc rack; 304 - bump column; 305 - sliding rod; 306 - downward pressure tension spring; 307 - cam; 3071 - protruding section; 3072 - descending section; 3073 - flat section; 401 - first support plate; 4011 - slag discharge groove; 402 - second support plate; 403 - third support plate; 404 - transmission belt; 405 - drive motor; 406 - platform plate; 407 - collection hood support; 408 - support leg; 5 - water inlet pipe. Specific embodiments

[0025] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and through specific embodiments.

[0026] As Figures 1 - 11As shown in the figure, the present invention provides an integrated treatment device for coal-based semi-coke wastewater, including support legs 408. A platform plate 406 is fixedly installed on the support legs 408. A slag filtering assembly is rotatably installed on the platform plate 406 through a first support plate 401, a second support plate 402, and a third support plate 403. The slag filtering assembly includes a sedimentation barrel 201. A rotating track 2011, a rotating water outlet 2012, a rotating water inlet 2013, a sediment collection tank 2014, and a slag discharge port 2015 are arranged on the sedimentation barrel 201. A screw 204 is rotatably arranged in the sediment collection tank 2014, and a gear 205 is rotatably arranged outside the sediment collection tank 2014. A baffle plate 202 is also fixedly installed on the inner wall of the sedimentation barrel 201; there are at least twelve sediment collection tanks 2014, and the twelve sediment collection tanks 2014 are evenly distributed on the surface of the sedimentation barrel 201. A screw 204 and a gear 205 are correspondingly arranged on each sediment collection tank 2014, and the number of baffle plates 202 is the same as the number of sediment collection tanks 2014. Three support rollers 203 are rotatably installed between the third support plate 403 and the second support plate 402. The support rollers 203 are in rolling cooperation with the rotating track 2011. A slag discharge groove 4011 is formed on the first support plate 401, and the first support plate 401 is in sliding seal cooperation with the end face of the slag discharge port 2015. A driving motor 405 is fixedly installed on the platform plate 406, and the output shaft of the driving motor 405 is in transmission connection with the sedimentation barrel 201 through a transmission belt 404.

[0027] It also includes an oil separation part, and the oil separation part includes a separation tank 101. Inside the separation tank 101, a first baffle 103, a second baffle 104, a fourth baffle 118, and a third baffle 106 are fixedly installed. At the top of the separation tank 101, a top drain pipe 105 and a pump body 116 are fixedly installed through a top support frame 107. The middle part of the top drain pipe 105 is communicated with the water inlet of the pump body 116. At the bottom of the separation tank 101, a bottom oil drain port 109 is also provided. A plug plate sliding chamber 114 is fixedly installed on the bottom oil drain port 109. A sealing plug plate 111 is slidably installed inside the plug plate sliding chamber 114. A spring support plate 113 is fixedly installed at the end of the plug plate sliding chamber 114. A reset tension spring 112 is fixedly installed between the spring support plate 113 and the sealing plug plate 111. An electromagnet 110 magnetically matched with the sealing plug plate 111 is also fixedly installed on the bottom oil drain port 109. A drain pipe 115 is fixedly installed at the bottom of the separation tank 101 through a valve 108; A collection cover 117 is rotatably installed on the rotating water outlet 2012. The collection cover 117 is fixedly installed on the third support plate 403 through two collection cover brackets 407. An inlet water tank 102 is fixedly installed at the bottom of the collection cover 117. An inlet water port 1171 and a drain port 1172 are also opened on the collection cover 117. The inlet water tank 102 is fixedly installed on the drain port 1172. The distance between the bottom end of the first baffle 103 and the bottom surface of the separation tank 101 is three-fourths of the length of the first baffle 103 itself. The distance between the bottom end of the second baffle 104 and the bottom surface of the separation tank 101 is one-fourth of the length of the second baffle 104 itself. The fourth baffle 118 is fixedly installed on the bottom surface of the separation tank 101. The length of the third baffle 106 is the same as that of the second baffle 104, and the third baffle 106 is fixedly installed on the bottom surface of the separation tank 101. The two ends of the top drain pipe 105 are respectively arranged between the first baffle 103 and the second baffle 104 and above the third baffle 106, and there is a gap between the top drain pipe 105 and the top end of the third baffle 106.

[0028] A limiting component is fixedly installed on the second support plate 402. The limiting component includes a support platform plate 301. A gearbox 302 is fixedly installed on the support platform plate 301. An arc-shaped rack 303 meshing with the gear 205 is slidably installed on the support platform plate 301 through two sliding rods 305. And a downward pressure tension spring 306 is wound around both sliding rods 305. The two ends of the downward pressure tension spring 306 are respectively fixedly connected with the arc-shaped rack 303 and the support platform plate 301. A convex block column 304 is fixedly installed on the arc-shaped rack 303. A cam 307 slidably matched with the convex block column 304 is fixedly installed on the output shaft of the gearbox 302. The input shaft of the gearbox 302 is fixedly connected with one of the support rollers 203.

[0029] First, one end of the water inlet pipe 5 is inserted into the sedimentation barrel 201 through the rotating water inlet 2013, and the other end of the water inlet pipe 5 is arranged in the wastewater to be treated through a water pump, and the wastewater is discharged into the sedimentation barrel 201. At the same time, the driving motor 405 is started. The output shaft of the driving motor 405 drives the sedimentation barrel 201 to rotate through the transmission belt 404. The rotation of the sedimentation barrel 201 drives the wastewater inside the sedimentation barrel 201 to rotate through the baffle plate 202, and the wastewater will flow toward the side of the collection hood 117 (because the wastewater will flow into the collection hood 117 through the rotating water outlet 2012, there is no obstruction at the rotating water outlet 2012, and then it flows into the separation tank 101 through the water inlet groove 102). During the flow of the wastewater in the sedimentation barrel 201, it will be affected by the centrifugal force, so that the solid substances in the wastewater move toward the direction close to the screw 204 (the surface of the screw 204, that is, the sediment collection tank 2014 starts to be filled with solid substances such as sediment, mainly playing a sealing role). As the wastewater flows toward the rotating water outlet 2012 side, the solid substances will gradually sink to the inner wall edge of the sedimentation barrel 201 (the side of the screw 204). While the sedimentation barrel 201 is rotating, the rotating track 2011 drives the support roller 203 to rotate, and the rotation of the support roller 203 drives the input shaft of the gearbox 302 to rotate, and the output shaft of the gearbox 302 drives the cam 307 to rotate (the gearbox 302 is fixed to the third support plate 403 and / or the support platform plate 301), as Figure 9 shown. The rotation of the cam 307 causes the convex block column 304 to slide on the surface of the cam 307. The cam 307 rotates counterclockwise. At the contact section of the convex block column 304 and the descending section 3072, at this moment, the convex block column 304 will move downward rapidly, and the arc-shaped rack 303 will also move synchronously (under the pulling force of the two downward pressing springs 306). When the cam 307 rotates to the contact section of the flat section 3073 and the convex block column 304, the convex block column 304 will stop moving vertically. When the cam 307 rotates to the contact section of the convex section 3071 and the convex block column 304, the convex block column 304 will move upward. Therefore, the arc-shaped rack 303 will make a linear reciprocating movement, and the arc-shaped rack 303 will intermittently engage and disengage with the gear 205. When engaging with the gear 205, the gear 205 will rotate (because of the revolution of the gear 205), and the rotation of the gear 205 drives the screw 204 to rotate. The rotation of the screw 204 discharges the solid substances from the slag discharge port 2015 and then discharges them through the slag discharge groove 4011. Controlling the reciprocating movement of the arc-shaped rack 303 in a cycle is to periodically remove the solid substances in the sediment collection tank 2014.

[0030] As Figure 10As shown, the wastewater entering the separation tank 101 will fall to the left side of the first baffle 103, and then enter the space between the third baffle 106 and the second baffle 104 through the gap between the bottom of the second baffle 104 and the bottom surface of the separation tank 101, and then flow into the right side of the third baffle 106 from the top of the third baffle 106. When the wastewater in the separation tank 101 is full (the liquid level reaches the height of the third baffle 106 and is 4 - 6 cm higher), since the wastewater contains heavy oil and floating oil, the floating oil, due to its relatively light own weight, will float on the water surface, while the heavy oil will sink to the bottom of the separation tank 101. The floating oil will be sucked into the pump body 116 through the top oil discharge pipe 105 and then discharged. The purpose of setting the first baffle 103 is to reduce the impact force of the wastewater flowing into the water inlet tank 102 and keep the liquid surface at both ends of the top oil discharge pipe 105 calm. The heavy oil will be discharged through the bottom oil discharge port 109 (the height of the fourth baffle 118 is half of the thickness of the heavy oil). The fourth baffle 118 reduces the kinetic energy of the wastewater flow, enabling the heavy oil discharged from the bottom oil discharge port 109 to flow smoothly and preventing oil-water mixing. A capacitance liquid level sensor is arranged inside the bottom oil discharge port 109 to detect the water inside the bottom oil discharge port 109. When there is conductive water in the bottom oil discharge port 109, the electromagnet 110 is activated, and the electromagnet 110 will attract the sealing plug plate 111, thereby cutting off the bottom oil discharge port 109 to prevent water from being discharged from the bottom oil discharge port 109. Therefore, the capacitance liquid level sensor is arranged above the sealing plug plate 111. For the wastewater entering the right side of the third baffle 106 through the top of the third baffle 106, the floating oil on the upper layer will be adsorbed by the top oil discharge pipe 105, and the water at the bottom will be discharged through the drain pipe 115, thus realizing the separation of floating oil, water, and heavy oil. The on-off of the drain pipe 115 can be controlled by the control valve 108.

Claims

1. An integrated treatment device for coal-based semi-coke wastewater, comprising support legs (408), and a platform plate (406) is fixedly installed on the support legs (408), characterized in that: On the platform plate (406), a filter residue component is rotatably installed through a first support plate (401), a second support plate (402), and a third support plate (403). The filter residue component includes a sedimentation bucket (201). A rotating track (2011), a rotating water outlet (2012), a rotating water inlet (2013), a sediment collection groove (2014), and a slag discharge port (2015) are provided on the sedimentation bucket (201). A screw (204) is rotatably arranged in the sediment collection groove (2014), and a gear (205) is rotatably arranged outside the sediment collection groove (2014). A baffle plate (202) is fixedly installed on the inner wall of the sedimentation bucket (201); There are at least twelve sediment collection grooves (2014), and the twelve sediment collection grooves (2014) are evenly distributed on the surface of the sedimentation bucket (201). A screw (204) and a gear (205) are correspondingly arranged on each sediment collection groove (2014), and the number of the baffle plates (202) is the same as the number of the sediment collection grooves (2014); It further includes an oil separation part. The oil separation part includes a separation tank (101). A first baffle plate (103), a second baffle plate (104), a fourth baffle plate (118), and a third baffle plate (106) are fixedly installed in the separation tank (101) in sequence. A top oil discharge pipe (105) and a pump body (116) are fixedly installed at the top of the separation tank (101) through a top support frame (107). The middle part of the top oil discharge pipe (105) is communicated with the water inlet of the pump body (116). A bottom oil discharge port (109) is further provided at the bottom of the separation tank (101). A plug plate sliding chamber (114) is fixedly installed on the bottom oil discharge port (109). A sealing plug plate (111) is slidably installed in the plug plate sliding chamber (114). A spring support plate (113) is fixedly installed at the end of the plug plate sliding chamber (114). A return spring (112) is fixedly installed between the spring support plate (113) and the sealing plug plate (111). An electromagnet (110) magnetically matched with the sealing plug plate (111) is further fixedly installed on the bottom oil discharge port (109). A drain pipe (115) is fixedly installed at the bottom of the separation tank (101) through a valve (108); The distance between the bottom end of the first baffle (103) and the bottom surface of the separation tank (101) is three - quarters of the length of the first baffle (103) itself. The distance between the bottom end of the second baffle (104) and the bottom surface of the separation tank (101) is one - quarter of the length of the second baffle (104) itself. The fourth baffle (118) is fixedly installed on the bottom surface of the separation tank (101). The length of the third baffle (106) is the same as the length of the second baffle (104), and the third baffle (106) is fixedly installed on the bottom surface of the separation tank (101). The two ends of the top drain pipe (105) are respectively arranged between the first baffle (103) and the second baffle (104) and above the third baffle (106). There is a gap between the top drain pipe (105) and the top end of the third baffle (106). Three support rollers (203) are rotatably installed between the third support plate (403) and the second support plate (402). The support rollers (203) are in rolling fit with the rotating track (2011). A slag discharge groove (4011) is formed on the first support plate (401). The first support plate (401) is in sliding seal fit with the end face of the slag discharge port (2015). A driving motor (405) is fixedly installed on the platform plate (406). The output shaft of the driving motor (405) is in transmission connection with the sedimentation bucket (201) through a transmission belt (404). A collection cover (117) is rotatably installed on the rotating water outlet (2012). The collection cover (117) is fixedly installed on the third support plate (403) through two collection cover brackets (407). An inlet water tank (102) is fixedly installed at the bottom of the collection cover (117). An inlet (1171) and a drain outlet (1172) are also formed on the collection cover (117). The inlet water tank (102) is fixedly installed on the drain outlet (1172). A limiting component is fixedly installed on the second support plate (402). The limiting component includes a support platform plate (301). A gearbox (302) is fixedly installed on the support platform plate (301). An arc - shaped rack (303) meshing with the gear (205) is slidably installed on the support platform plate (301) through two slide bars (305). Compression pull springs (306) are wound around both of the two slide bars (305). The two ends of the compression pull spring (306) are respectively fixedly connected to the arc - shaped rack (303) and the support platform plate (301). A convex block column (304) is fixedly installed on the arc - shaped rack (303). A cam (307) slidably matched with the convex block column (304) is fixedly installed on the output shaft of the gearbox (302). The input shaft of the gearbox (302) is fixedly connected to one of the support rollers (203).

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