Oil field sewage and boiler flue gas mixed bath two-way purification device

Abstract

The utility model relates to the field of oil extraction equipment, in particular to an oil field sewage and boiler flue gas mixed bath bidirectional purification device which comprises a mixed bath tower, a high-temperature-resistant fan, a sewage pump, a dust removal cloth bag, a partition plate, an inclined plate, a jet pipe, a fin heat exchanger, a demister, a condensation plate and a chimney. The device is reasonable and compact in structure and convenient to use, boiler flue gas treated by the dust collecting cloth bag and oilfield sewage are mixed for bath, flue gas treatment and purification are achieved through sewage cleaning, pure water is obtained through condensation after flue gas waste heat evaporation, cyclic utilization of heat energy is achieved through heat transfer of a water carrier, and energy conservation and emission reduction are achieved. The problem that flue gas and dust are difficult to treat can be effectively solved, long-period and stable operation of the purification device is ensured, efficient purification of sewage and flue gas, heat energy recovery and water resource reutilization are achieved, and remarkable environment-friendly, economic and technical advantages are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil production equipment, and is a two-way purification device for mixing oilfield sewage and boiler smoke. Background Art

[0002] The comprehensive treatment and application of industrial wastewater, oilfield wastewater, and boiler flue gas are increasingly valued by countries around the world, and a large number of mature and effective technical methods have been produced, which are widely used in different environments and regions. The oil production process of the petroleum industry, especially the thermal oil production part, produces a large amount of boiler flue gas and oilfield wastewater.

[0003] In the prior art, a Chinese patent document with publication number CN103803673 discloses a bidirectional purification device for mixing oilfield sewage and boiler flue gas. The oilfield sewage is mixed with the boiler flue gas to achieve flue gas treatment and purification by sewage washing, and pure water is obtained by condensation after evaporation of the flue gas waste heat, and the thermal energy is recycled through the thermal transfer of the water carrier. It only uses an umbrella-shaped dust-removing umbrella to treat the flue gas. In actual applications, since the flue gas contains a large number of particles, in the process of mixing with sewage, the particles are moved upward by the airflow. When encountering the droplet filter, the dust particles are easily accumulated here, causing the droplet filter to be blocked, thereby affecting the long-term and stable operation of the purification device.

[0004] Therefore, based on the problems existing in the above-mentioned two-way purification device for mixing oilfield sewage and boiler flue gas, it is very necessary to develop a two-way purification device for mixing oilfield sewage and boiler flue gas. Summary of the invention

[0005] The utility model provides a two-way purification device for mixing oilfield sewage and boiler flue gas, which overcomes the shortcomings of the above-mentioned prior art and can effectively solve the problems of clogging of filtering equipment and difficulty in handling flue gas dust due to a large number of particles in the flue gas.

[0006] The technical solution of the utility model is achieved through the following measures: a two-way purification device for mixed bathing of oilfield sewage and boiler flue gas, including a mixing bath tower, a high-temperature resistant fan, a sewage pump, and a chimney. A flue gas inlet pipe is fixedly connected between the air inlet of the mixing bath tower and the air outlet of the high-temperature resistant fan, a dust removal bag is fixedly arranged at the middle and lower part of the mixing bath tower, a sewage coil is arranged on the mixing bath tower, a sewage pump is fixedly installed at the inlet of the sewage coil, and the air outlet at the top of the mixing bath tower is fixedly connected to the chimney.

[0007] The following are further optimizations and / or improvements to the above utility model technical solution:

[0008] The above-mentioned oilfield sewage and boiler flue gas mixed bathing two-way purification device has a lower baffle fixedly arranged at the lower part of the mixing bath tower, a dust removal bag is fixedly installed at the center of the lower baffle, a plurality of air outlets are arranged on the lower baffle, an inclined plate is fixedly arranged at the bottom of the mixing bath tower, and a slag discharge valve is arranged at the outer outlet of the bottom of the mixing bath tower.

[0009] In the above-mentioned two-way purification device for mixing oilfield sewage and boiler flue gas, the sewage coil passes through the mixing tower and then out, and a sewage outlet is arranged at the lower coil of the sewage coil.

[0010] In the above-mentioned two-way purification device for mixed bathing of oilfield sewage and boiler flue gas, an upper baffle is fixedly arranged in the middle of the mixed bath tower, and a plurality of groups of jet tubes are penetrated on the upper baffle.

[0011] In the above-mentioned two-way purification device for mixed bathing of oilfield sewage and boiler flue gas, a leak-proof groove is provided at the bottom of each set of jet tubes, a leak-proof pipe is fixedly connected between the leak-proof grooves, and a drainage pipe is provided at the outer outlet of the middle part of the mixed bath tower.

[0012] In the above-mentioned two-way purification device for mixing oilfield sewage and boiler flue gas, a fin heat exchanger capable of heating the sewage coil is arranged on the upper part of the jet tube.

[0013] In the above-mentioned two-way purification device for mixing oilfield sewage and boiler flue gas, a demister is arranged on the upper part of the fin heat exchanger.

[0014] In the above-mentioned two-way purification device for mixing oilfield sewage and boiler flue gas, a condensation plate is arranged in the mixing tower between the chimney inlet and the demister, and multiple groups of cold water pipes are passed through the upper end of the condensation plate.

[0015] In the above-mentioned bidirectional purification device for mixed bathing of oilfield sewage and boiler flue gas, the condensation plates are pentagonal in shape and are connected in multiple groups in parallel. Multiple guide rods are arranged at the lower end of the condensation plates, and a collecting trough is arranged at the bottom of the guide rods.

[0016] The utility model has a reasonable and compact structure and is easy to use. The boiler flue gas treated by the dust removal bag is mixed with the oilfield sewage to achieve the flue gas treatment and purification by sewage cleaning, and the flue gas waste heat is evaporated and condensed to obtain pure water, and the heat energy is recycled through the heat transfer of the water carrier. It effectively solves the problem of difficult treatment of flue gas dust, realizes efficient purification of sewage and flue gas, heat recovery and water resource reuse, and has significant environmental protection, economic and technical advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 This is a schematic diagram of the process flow of the utility model.

[0018] Attached Figure 2 For attachment Figure 1 Schematic diagram of the side view structure of the middle condensation plate.

[0019] Attached Figure 1The codes are: 1 for mixed bath tower, 2 for high temperature resistant fan, 3 for sewage pump, 4 for jet tube, 5 for dust bag, 6 for demister, 7 for condensation plate, 8 for chimney, 9 for anti-leakage groove, 10 for drain pipe, 11 for lower partition, 12 for inclined plate, 13 for sewage coil, 14 for fin heat exchanger, 15 for upper partition, 16 for sewage outlet, 17 for leakage pipe, 18 for collecting trough, 19 for guide rod, 20 for cold water pipe, 21 for flue gas inlet pipe, and 22 for slag discharge valve. DETAILED DESCRIPTION

[0020] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.

[0021] In the present invention, unless otherwise specified, the equipment and devices used are all the equipment and devices known and used in the art. For example, the high temperature resistant fan is the boiler fume conveying device known and used.

[0022] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached manual. Figure 1 The layout is described in detail, such as the positional relationship of front, back, top, bottom, left, right, etc., which is based on the attached manual. Figure 1 It is determined by the layout direction.

[0023] The present invention is further described below in conjunction with the embodiments and drawings:

[0024] Embodiment 1: As attached Figure 1 As shown, the oilfield sewage and boiler flue gas mixed bathing two-way purification device includes a mixing tower 1, a high temperature resistant fan 2, a sewage coil 13, a sewage pump 3, and a chimney 8. A flue gas inlet pipe 21 is fixedly connected between the air inlet of the mixing tower 1 and the air outlet of the high temperature resistant fan 2. A dust removal bag 5 is fixedly arranged at the lower part of the mixing tower 1. A sewage coil 13 is arranged on the mixing tower 1. A sewage pump 3 is fixedly installed at the inlet of the sewage coil 13. The air outlet at the top of the mixing tower 1 is fixedly connected to the chimney 8.

[0025] According to actual needs, the above-mentioned oilfield sewage and boiler flue gas mixed bath bidirectional purification device can be further optimized and / or improved:

[0026] Embodiment 2: It is different from Embodiment 1 in that: Figure 1 As shown, a lower partition 11 is fixedly provided at the lower part of the mixing bath tower 1, a plurality of air outlets are provided on the lower partition 11, a dust removal bag 5 is fixedly installed in the middle of the lower partition 11, an inclined plate 12 is fixedly provided at the bottom of the mixing bath tower 1, and a slag discharge valve 22 is provided at the outer outlet of the bottom of the mixing bath tower 1.

[0027] As needed, the high temperature resistant fan 2 passes the boiler flue gas into the lower part of the lower partition 11. The impurities in the boiler flue gas are intercepted and filtered by the dust removal bag 5 and then gathered at the bottom of the inclined plate 12 and discharged through the slag discharge valve 22.

[0028] Embodiment 3: It differs from Embodiment 1 to Embodiment 2 in that: Figure 1 As shown, the sewage coil 13 passes through the mixed bath tower 1 and then out, and a sewage outlet 16 is provided at the lower coil of the sewage coil 13 .

[0029] Embodiment 4: It differs from Embodiments 1 to 3 in that: Figure 1 As shown, an upper partition 15 is fixedly arranged in the middle of the mixed bath tower 1, and a plurality of jet tubes 4 are penetrated through the upper partition 10.

[0030] As required, the oilfield sewage is discharged from the sewage outlet 16 to form a sewage layer, and the sewage in the sewage layer is discharged upward under the action of the airflow in the jet tube 4 to form water mist, which is convenient for the air-water mixture to fully contact and react with the neutralization reaction.

[0031] Embodiment 5: It differs from Embodiments 1 to 4 in that: Figure 1 As shown, each group of jet tubes 4 is provided with a corresponding anti-leakage groove 9 at the bottom, a water leakage pipe 17 is fixedly connected between the anti-leakage grooves 9, and a drainage pipe 10 is fixedly connected to the outer outlet of the middle part of the mixed bath tower 1.

[0032] Embodiment 6: It differs from Embodiments 1 to 5 in that: Figure 1 As shown, a fin heat exchanger 14 capable of heating the sewage coil is arranged on the upper part of the sewage layer 15 .

[0033] As needed, the upper coil of the sewage coil 13 passes through the fin heat exchanger 14, the boiler flue gas as the heat medium passes through the shell side of the fin heat exchanger 14, and the oilfield sewage as the cold medium passes through the tube side of the fin heat exchanger 14. The oilfield sewage moves downward after the temperature is increased by the fin heat exchanger 14.

[0034] Embodiment 7: It differs from Embodiments 1 to 6 in that: Figure 1 As shown, a demister 6 is provided on the upper part of the fin heat exchanger 14, and the water mist of the gas-water mixture is intercepted after passing through the demister 6.

[0035] Embodiment 8: It differs from Embodiments 1 to 7 in that: Figure 1 , 2 As shown, a condensation plate 7 is arranged in the mixed bath tower 1 between the inlet end of the chimney 8 and the demister 6, and a plurality of groups of cold water pipes 20 pass through the upper end of the condensation plate 7.

[0036] Embodiment 9: It differs from Embodiments 1 to 8 in that: Figure 1 , 2As shown, the condensation plate 7 is configured to be pentagonal in shape and multiple groups are connected in parallel. Multiple guide rods 19 are provided at the lower end of the condensation plate 7, and a collecting groove 18 is provided at the bottom of the guide rod 19. After the water vapor condenses on the condensation plate 7, it descends and gathers in the collecting groove 18 and is discharged outward.

[0037] As required, conventional valves, thermometers and pressure gauges known in the art may be provided on the pipelines and equipment of the bidirectional purification device for mixing oilfield sewage and boiler flue gas according to production needs.

[0038] The above technical features constitute the implementation method of the present utility model, which has strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the needs of different situations.

[0039] The use process of the embodiment of the utility model is as follows: first, the boiler flue gas is transported to the lower part of the lower baffle 11 of the mixing tower through the high-temperature resistant fan 2, and moves upward after being intercepted and filtered by the dust bag 5. The flue gas impurities intercepted on the inclined plate 12 are discharged through the slag discharge valve 22. The oilfield sewage in the sewage coil 3 is heated by the fin heat exchanger 14 to increase the temperature and then moves downward to the sewage outlet 16 to be discharged to form a sewage layer; then, the oilfield sewage in the sewage layer forms water mist upward under the action of the airflow in the jet tube 4, and the water mist moves upward to be fully mixed with the boiler flue gas and then undergoes a neutralization reaction. The water mist is intercepted after the gas-water mixture passes through the demister 14, and the purified boiler flue gas and water vapor rise through the demister 14. The water vapor is condensed by the condensation plate 7 and then descends through the guide rod 19 to converge to the collecting trough 18 for discharge. The condensed distilled water is relatively pure and can be used for secondary utilization; finally, the purified boiler flue gas and uncondensed water vapor are discharged upward through the chimney 8.

Claims

1. A two-way purification device for mixing oilfield sewage and boiler flue gas, characterized in that It includes a mixing tower, a high-temperature resistant fan, a sewage coil, a sewage pump, and a chimney. A flue gas inlet pipe is fixedly connected between the air inlet of the mixing tower and the air outlet of the high-temperature resistant fan. A dust removal bag is fixedly installed at the middle and lower part of the mixing tower. A sewage coil is arranged on the mixing tower. A sewage pump is fixedly installed at the inlet of the sewage coil. The air outlet on the top of the mixing tower is fixedly connected to a chimney.

2. The oilfield sewage and boiler flue gas mixed bath bidirectional purification device according to claim 1 is characterized in that A lower partition is fixedly arranged at the lower part of the mixed bath tower, a dust removal bag is fixedly installed in the center of the lower partition, a plurality of air outlets are arranged on the lower partition, an inclined plate is fixedly arranged at the bottom of the mixed bath tower, and a slag discharge valve is arranged at the outer outlet of the bottom of the mixed bath tower.

3. The oilfield sewage and boiler flue gas mixed bath bidirectional purification device according to claim 1 or 2, characterized in that The sewage coil goes around the mixed bath tower and then passes out, and a sewage outlet is arranged at the lower coil of the sewage coil.

4. The oilfield sewage and boiler flue gas mixed bath bidirectional purification device according to claim 1 or 2, characterized in that An upper partition is fixedly arranged in the middle of the mixed bath tower, and a plurality of groups of jet tubes are penetrated through the upper partition.

5. The oilfield sewage and boiler flue gas mixed bath bidirectional purification device according to claim 3 is characterized in that An upper partition is fixedly arranged in the middle of the mixed bath tower, and a plurality of groups of jet tubes are penetrated through the upper partition.

6. The oilfield sewage and boiler flue gas mixed bath bidirectional purification device according to claim 1 or 5, characterized in that A leak-proof groove is correspondingly arranged at the bottom of each jet tube, a leak-proof pipe is fixedly connected between the leak-proof grooves, and a drainage pipe is fixedly connected to the outer outlet in the middle of the mixed bath tower.

7. The oilfield sewage and boiler flue gas mixed bath bidirectional purification device according to claim 6 is characterized in that A fin heat exchanger capable of heating the sewage coil is arranged on the upper part of the jet tube.

8. The oilfield sewage and boiler flue gas mixed bath bidirectional purification device according to claim 7 is characterized in that A demister is provided on the top of the fin heat exchanger.

9. The oilfield sewage and boiler flue gas mixed bath bidirectional purification device according to claim 1 or 7, characterized in that A condensation plate is arranged in the mixed bath tower between the chimney inlet end and the demister, and a plurality of groups of cold water pipes are passed through the upper end of the condensation plate.

10. The oilfield sewage and boiler flue gas mixed bath bidirectional purification device according to claim 9, characterized in that The condensation plate has a pentagonal shape and multiple groups are connected in parallel. Multiple guide rods are arranged at the lower end of the condensation plate, and a collecting groove is arranged at the bottom of the guide rod.

Images