CN209423329U - A kind of double tower purification system suitable for dangerous waste fume treatment - Google Patents

Abstract

The utility model relates to a kind of double tower purification systems suitable for dangerous waste fume treatment, the system comprises level-one washing system and/or second level deacidification systems, the level-one washing system can wash flue gas, the second level deacidification system can deviate from the acid ingredient in flue gas, so that the acid ingredient in flue gas is deviate from, reach standard limit of smog release；When level-one washing system and second level deacidification system are arranged simultaneously, the level-one washing system and second level deacidification system arranged in series, and the flue gas output end of level-one washing system is connected setting with the flue gas input terminal of second level deacidification system.This system can remove effectively most of polluter in flue gas, and can be removed the acidic materials in flue gas to reach existing discharge standard by second level extracting tower.

Description

A double-tower purification system suitable for hazardous waste flue gas treatment

technical field

The utility model belongs to the technical field of hazardous waste treatment, in particular to a double-tower purification system suitable for hazardous waste flue gas treatment.

Background technique

With the rapid development of my country's industry, the amount of hazardous waste has increased year by year, causing serious harm to the environment. The disposal of an increasing amount of various wastes has become an environmental protection issue that countries all over the world must face. The disposal of toxic and hazardous waste has become a major headache for governments of various countries, and it is also a problem related to human development and the ecological environment. Most of the hazardous wastes in our country are directly landfilled and stacked, which not only takes up a lot of land, but also seriously pollutes the soil, groundwater and atmosphere, threatening people's health and destroying the surrounding environment.

During the treatment of hazardous waste, a large amount of waste gas containing pollutants will be generated. How to deal with this waste gas has become the top priority of people's concern.

Through the search, no patent publications related to the invention patent application have been found.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art. Due to the complexity of the hazardous waste industry, the composition of the flue gas produced after hazardous waste treatment is also very complicated, and to provide a device suitable for hazardous waste flue gas The dual-tower purification system is used to meet the technical deficiencies of the existing hazardous waste industry. This system can effectively remove most of the pollutants in the flue gas, and can remove the acidic substances in the flue gas through the secondary deacidification tower. Meet existing emission standards.

The utility model solves its technical problem and realizes by taking the following technical solutions:

A double-tower purification system suitable for hazardous waste flue gas treatment, the system includes a primary scrubbing system and/or a secondary deacidification system, the primary scrubbing system can scrub the flue gas, and the secondary deacidification system The acid system can remove the acidic components in the flue gas, so that the acidic components in the flue gas can be removed to meet the flue gas emission standards;

When the primary scrubbing system and the secondary deacidification system are set at the same time, the primary scrubbing system and the secondary deacidification system are arranged in series, and the flue gas output of the primary scrubbing system is connected to the flue gas input of the secondary deacidification system End-to-end connection settings.

Moreover, the primary scrubbing system includes a scrubbing tower system, a circulating scrubbing system, and a washing exhaust system; the scrubbing tower system includes a scrubbing tower, an inlet flue, a scrubber slurry storage section, a scrubbing tower washing section, and an outlet flue, In the washing tower, a washing tower slurry storage section, a washing tower washing section and an outlet flue are coaxially arranged in sequence from bottom to top, and the outlet flue is coaxially arranged on the top of the washing tower; the washing tower slurry storage section, washing An inlet flue is arranged on the washing tower between the tower washing sections, and the inlet flue is connected with the inside of the washing tower; the washing section of the washing tower includes a spray pipeline and a nozzle, and the spray pipeline is arranged along the horizontal direction On the inner wall of the washing tower, a plurality of nozzles are evenly distributed along the horizontal direction on the lower bottom surface of the spray pipeline, and the nozzles are connected to the spray pipeline;

The input end of the circulating washing system is connected to the slurry storage section of the washing tower, the output end of the circulating washing system is connected to the input end of the spray pipeline, and the output end of the spray pipeline is connected to the nozzle. , the circulating washing system can circulate the slurry in the slurry storage section of the washing tower into the spray pipeline;

The input end of the washing and discharging system is connected to the slurry storage section of the washing tower, and the washing and discharging system can discharge the slurry that meets the discharge requirements in the slurry storage section of the washing tower.

Moreover, the circulating washing system includes a washing circulation pump and a circulation pipeline, the input end of the washing circulation pump is connected with the slurry storage section of the washing tower through the circulation pipeline, and the output end of the washing circulation pump is connected with the washing tower slurry storage section through the circulation pipeline. The input end of the spray pipeline is connected and arranged, and the output end of the spray pipeline is connected and arranged with the nozzle;

The washing effluent system includes a washing effluent pump, and the input end of the washing effluent pump is connected with the slurry storage section of the washing tower.

Moreover, the secondary deacidification system includes a deacidification tower system, a circulating deacidification system, and a deacidification effluent system; the deacidification tower system includes a deacidification tower inlet flue, a deacidification tower, and a deacidification tower outlet flue , the deacidification tower includes a deacidification tower slurry storage section, a deacidification section and a demister section;

In the deacidification tower, a deacidification tower slurry storage section, a deacidification section and a demisting section are arranged coaxially and sequentially from bottom to top, and the outlet flue of the deacidification tower is coaxially connected and arranged on the top of the deacidification tower; The deacidification tower inlet flue is set on the deacidification tower between the deacidification tower slurry storage section and the deacidification section, and the deacidification tower inlet flue is connected to the interior of the deacidification tower; the deacidification section includes a deacidification tower. The acid section spray pipeline and the deacidification section nozzle, the deacidification section spray pipeline is arranged on the inner wall of the deacidification tower along the horizontal direction, and the lower bottom surface of the deacidification section spray pipeline is evenly distributed along the horizontal direction A plurality of nozzles in the deacidification section are arranged at intervals, and the nozzles in the deacidification section are connected to the spray pipeline in the deacidification section;

The input end of the cyclic deacidification system is connected to the slurry storage section of the deacidification tower, the output end of the cyclic deacidification system is connected to the input end of the spray pipeline in the deacidification section, and the spray pipe in the deacidification section The output end of the pipeline is connected to the nozzle of the deacidification section, and the circulating deacidification system can circulate the slurry in the slurry storage section of the deacidification tower into the spray pipeline of the deacidification section;

The input end of the deacidification discharge system is connected to the slurry storage section of the deacidification tower, and the deacidification discharge system can discharge the slurry that meets the discharge requirements in the slurry storage section of the deacidification tower.

Moreover, the cyclic deacidification system includes a deacidification circulation pump and a deacidification circulation pipeline, the input end of the deacidification circulation pump is connected with the deacidification tower slurry storage section through the deacidification circulation pipeline, and the deacidification circulation The output end of the pump is connected to the input end of the spray pipeline in the deacidification section through the deacidification circulation pipeline, and the output end of the spray pipeline in the deacidification section is connected to the nozzle in the deacidification section;

The deacidification effluent system includes a deacidification effluent pump, and the input end of the deacidification effluent pump is connected to the slurry storage section of the deacidification tower.

Moreover, the structure used in the deacidification section is a pneumatic mixing unit.

Moreover, the secondary deacidification system also includes a swirl mixing section, which is coaxially arranged on the inner wall of the deacidification tower in the deacidification section, and deacidification towers are arranged above and below the swirl mixing section at intervals. Section spray pipeline and deacidification section nozzle.

Moreover, the mist removal section includes a mist eliminator and a demister flushing water system, and the mist eliminator flushing water system can flush the mist eliminator.

Moreover, the flushing water system of the demister includes a flushing water pump; or, the demister is a pneumatic high-efficiency demister.

The advantages and positive effects obtained by the utility model are:

1. The utility model is a flue gas treatment system in the hazardous waste industry. There are various uncertain substances in the flue gas of the hazardous waste industry. The existing technology does not involve this aspect. The system of the utility model can effectively remove large amounts of substances in the flue gas. Part of the pollutants, and the acidic substances in the flue gas can be removed through the secondary deacidification tower to meet the existing emission standards. The utility model provides a new technical solution for hazardous waste flue gas treatment. The utility model can also use the first-level washing system or the second-level deacidification system independently according to the different components in the hazardous waste flue gas, which ensures the flexibility of the system setting.

2. This system can be adjusted according to the flue gas volume of the hazardous waste treatment system. By adjusting the diameter of the washing tower of the primary washing system or the deacidification tower of the secondary deacidification system, the volume of flue gas after treatment by different hazardous waste systems can be met. , to meet the high deacidification efficiency, and has a certain dust removal efficiency, will not produce secondary pollution, and is conducive to environmental protection.

3. The system of this utility model has been improved and innovated. A two-stage treatment system is applied in the device. Under the treatment of the two-stage treatment system, the acidic substances in the flue gas are removed, so that the flue gas meets the existing emission requirements. requirements; the device can meet the needs of flue gas deacidification under various working conditions.

4. The first-level washing system and the second-level deacidification system of this system can be used in series; they can also be used alone, which expands the scope of use of this system.

Description of drawings

Fig. 1 is a schematic diagram of the structural connection of the primary washing system in the utility model;

Fig. 2 is a schematic diagram of the structural connection of the secondary deacidification system in the present invention.

Detailed ways

The utility model will be further described in detail below in conjunction with specific examples. The following examples are only descriptive, not restrictive, and cannot limit the protection scope of the utility model.

The structures, connections and methods not described in detail in the utility model patent can be understood as common knowledge in the field.

A double-tower purification system suitable for hazardous waste flue gas treatment, as shown in Figure 1 and Figure 2, the system includes a primary scrubbing system 1 and/or a secondary deacidification system 2, the primary scrubbing system can Washing the flue gas, the secondary deacidification system can remove the acidic components in the flue gas, so that the acidic components in the flue gas are removed to meet the flue gas emission standards;

When the primary scrubbing system and the secondary deacidification system are set at the same time, the primary scrubbing system and the secondary deacidification system are arranged in series, and the flue gas output of the primary scrubbing system is connected to the flue gas input of the secondary deacidification system End-to-end connection settings.

In this embodiment, the primary washing system includes a washing tower system, a circular washing system, and a washing discharge system 16; the washing tower system includes a washing tower 17, an inlet flue 12, a washing tower slurry storage section 15, a washing Tower washing section 14 and outlet flue 13, the washing tower slurry storage section, washing tower washing section and outlet flue are coaxially arranged in the washing tower from bottom to top, and the outlet flue is coaxially arranged on the top of the washing tower An inlet flue is set on the washing tower between the washing tower slurry storage section and the washing tower washing section, and the inlet flue communicates with the inside of the washing tower; the washing tower washing section includes a spray pipeline 18 and a nozzle 19. The spray pipeline is arranged on the inner wall of the washing tower along the horizontal direction, and a plurality of nozzles are evenly distributed along the horizontal direction on the lower bottom surface of the spray pipeline, and the nozzles are connected to the spray pipeline;

The input end of the circulating washing system is connected to the slurry storage section of the washing tower, the output end of the circulating washing system is connected to the input end of the spray pipeline, and the output end of the spray pipeline is connected to the nozzle. , the circulating washing system can circulate the slurry in the slurry storage section of the washing tower into the spray pipeline;

The input end of the washing and discharging system is connected to the slurry storage section of the washing tower, and the washing and discharging system can discharge the slurry that meets the discharge requirements in the slurry storage section of the washing tower.

The inlet flue of the first-level washing system of this system can ensure that the flue gas can (preferably evenly) enter the washing tower; the washing tower slurry storage section is to meet the washing slurry storage, and the washing slurry is precipitated in this section; when the washing liquid concentration When it reaches a certain value, it will be discharged through the washing and discharging system for post-treatment; the washing section of the washing tower is the contact section between the flue gas and the washing liquid, which can clean the impurities in the flue gas by contacting and reduce the temperature of the flue gas; the outlet flue can ensure that the flue gas Efflux.

In this embodiment, the circulating washing system includes a washing circulation pump 5 and a circulation pipeline 11, the input end of the washing circulation pump is connected with the slurry storage section of the washing tower through the circulation pipeline, and the output of the washing circulation pump The end is connected to the input end of the spray pipeline through the circulation pipeline, and the output end of the spray pipeline is connected to the nozzle;

The washing effluent system includes a washing effluent pump 6, and the input end of the washing effluent pump is connected with the slurry storage section of the washing tower.

In this embodiment, the secondary deacidification system includes a deacidification tower system, a circulating deacidification system, and a deacidification discharge system 28; the deacidification tower system includes a deacidification tower inlet flue 22, a deacidification tower 29 And deacidification tower outlet flue 24, described deacidification tower comprises deacidification tower slurry storage section 27, deacidification section 25 and defogging section 23;

In the deacidification tower, a deacidification tower slurry storage section, a deacidification section and a demisting section are arranged coaxially and sequentially from bottom to top, and the outlet flue of the deacidification tower is coaxially connected and arranged on the top of the deacidification tower; The deacidification tower inlet flue is set on the deacidification tower between the deacidification tower slurry storage section and the deacidification section, and the deacidification tower inlet flue is connected to the interior of the deacidification tower; the deacidification section includes a deacidification tower. The acid section spray pipeline 10 and the deacidification section nozzle 9, the deacidification section spray pipeline is arranged on the inner wall of the deacidification tower along the horizontal direction, and the lower bottom surface of the deacidification section spray pipeline is horizontally A plurality of nozzles in the deacidification section are evenly spaced, and the nozzles in the deacidification section are connected to the spray pipeline in the deacidification section;

The input end of the cyclic deacidification system is connected to the slurry storage section of the deacidification tower, the output end of the cyclic deacidification system is connected to the input end of the spray pipeline in the deacidification section, and the spray pipe in the deacidification section The output end of the pipeline is connected to the nozzle of the deacidification section, and the circulating deacidification system can circulate the slurry in the slurry storage section of the deacidification tower into the spray pipeline of the deacidification section;

The input end of the deacidification discharge system is connected to the slurry storage section of the deacidification tower, and the deacidification discharge system can discharge the slurry that meets the discharge requirements in the slurry storage section of the deacidification tower.

The inlet flue of the deacidification system of the secondary deacidification system of this system can ensure that the flue gas can (preferably evenly) enter the washing tower; the deacidification tower slurry storage section is to meet the storage of washing slurry, and the deacidification slurry is carried out in this section. Precipitation; when the concentration of the deacidification liquid reaches a certain value, it will be discharged through the deacidification discharge system for post-treatment; the deacidification section of the deacidification tower is the contact section between the flue gas and the deacidification liquid. Meet the existing emission standards; the flue at the outlet of the deacidification tower can ensure the discharge of flue gas.

In this embodiment, the cyclic deacidification system includes a deacidification circulation pump 7 and a deacidification circulation pipeline 21, and the input end of the deacidification circulation pump is connected with the deacidification tower slurry storage section through the deacidification circulation pipeline Setting, the output end of the deacidification circulation pump is connected to the input end of the deacidification section spray pipeline through the deacidification circulation pipeline, and the output end of the deacidification section spray pipeline is connected to the nozzle of the deacidification section. ;

The deacidification effluent system includes a deacidification effluent pump 8, and the input end of the deacidification effluent pump is connected to the slurry storage section of the deacidification tower.

In this embodiment, the structure used in the deacidification section is a pneumatic mixing unit.

In this embodiment, the secondary deacidification system further includes a swirl mixing section 26, which is coaxially arranged on the inner wall of the deacidification tower in the deacidification section, and the top and bottom of the swirl mixing section are both The deacidification section spray pipeline and the deacidification section nozzle are arranged at intervals. The swirling flow mixing section is to ensure that the deacidification slurry and flue gas are fully mixed. The device can be set according to engineering needs.

In this embodiment, the demister section includes a demister and a demister flushing water system (not shown in the figure), the demister flushing water system can flush the demister, and the demister section can be Install different types of mist eliminators. Preferably, the flushing water system of the demister includes a flushing water pump. Preferably, the demister is a pneumatic high-efficiency demister.

The utility model is suitable for the double-tower purification system of hazardous waste flue gas treatment, which can meet the removal of acidic substances in flue gas after various hazardous waste treatments, and can also be used for flue gas deacidification treatment in other occasions.

The utility model is suitable for the working principle of the double-tower purification system for hazardous waste flue gas treatment:

Hazardous waste flue gas enters the scrubber through the inlet flue of the scrubber, and in the scrubber, the circulating scrubbing system slurry reacts with the flue gas to remove some heavy metals and other pollutants in the flue gas; the washed flue gas passes through the scrubber Exit flue discharge. When the primary washing system and the secondary deacidification system are set at the same time, the flue gas enters the secondary deacidification system through the flue; the flue gas enters the deacidification tower of the deacidification system from the inlet flue of the deacidification tower of the deacidification system, The flue gas mixes and reacts with the slurry of the deacidification circulation system in the deacidification tower of the deacidification system to remove acid pollutants in the flue gas; it is fully mixed in the deacidification section; the purified flue gas passes through the demisting section in the deacidification tower Then remove the water in the flue gas, so that the flue gas can be discharged up to the standard.

Although the embodiment of the present utility model is disclosed for the purpose of illustration, those skilled in the art will understand that various replacements, changes and modifications are possible without departing from the spirit and scope of the present utility model and the appended claims Therefore, the scope of the present utility model is not limited to the content disclosed in the embodiment.

Claims (9)

1. A double-tower purification system suitable for hazardous waste flue gas treatment, characterized in that: the system includes a primary washing system and/or a secondary deacidification system, and the primary washing system can wash the flue gas , the secondary deacidification system can remove the acidic components in the flue gas, so that the acidic components in the flue gas are removed to meet the flue gas emission standard; When the primary scrubbing system and the secondary deacidification system are set at the same time, the primary scrubbing system and the secondary deacidification system are arranged in series, and the flue gas output of the primary scrubbing system is connected to the flue gas input of the secondary deacidification system End-to-end connection settings. 2. The double-tower purification system suitable for hazardous waste flue gas treatment according to claim 1, characterized in that: the first-stage washing system includes a washing tower system, a circular washing system, and a washing and exhausting system; the washing tower The system includes a washing tower, an inlet flue, a washing tower slurry storage section, a washing tower washing section, and an outlet flue. The washing tower slurry storage section, the washing tower washing section, and the outlet flue are arranged coaxially and sequentially from bottom to top in the washing tower. Road, the outlet flue is coaxially arranged on the top of the washing tower; the washing tower between the washing tower slurry storage section and the washing tower washing section is provided with an inlet flue, and the inlet flue is connected to the interior of the washing tower; The washing section of the washing tower includes a spraying pipeline and nozzles, the spraying pipeline is arranged on the inner wall of the washing tower along the horizontal direction, and a plurality of nozzles are evenly distributed and spaced along the horizontal direction on the lower bottom surface of the spraying pipeline , the nozzle is set in communication with the spray pipeline; The input end of the circulating washing system is connected to the slurry storage section of the washing tower, the output end of the circulating washing system is connected to the input end of the spray pipeline, and the output end of the spray pipeline is connected to the nozzle. , the circulating washing system can circulate the slurry in the slurry storage section of the washing tower into the spray pipeline; The input end of the washing and discharging system is connected to the slurry storage section of the washing tower, and the washing and discharging system can discharge the slurry that meets the discharge requirements in the slurry storage section of the washing tower. 3. The double-tower purification system suitable for hazardous waste flue gas treatment according to claim 2, characterized in that: the circulation washing system includes a washing circulation pump and a circulation pipeline, and the input end of the washing circulation pump passes through the circulation The pipeline is connected to the slurry storage section of the washing tower, and the output end of the washing circulation pump is connected to the input end of the spray pipeline through the circulation pipeline; The washing effluent system includes a washing effluent pump, and the input end of the washing effluent pump is connected with the slurry storage section of the washing tower. 4. The double-tower purification system suitable for hazardous waste flue gas treatment according to any one of claims 1 to 3, characterized in that: the secondary deacidification system includes a deacidification tower system, a circulating deacidification system and a deacidification system Acid discharge system; the deacidification tower system includes a deacidification tower inlet flue, a deacidification tower and a deacidification tower outlet flue, and the deacidification tower includes a deacidification tower slurry storage section, a deacidification section and a demister section ; In the deacidification tower, a deacidification tower slurry storage section, a deacidification section and a demisting section are arranged coaxially and sequentially from bottom to top, and the outlet flue of the deacidification tower is coaxially connected and arranged on the top of the deacidification tower; The deacidification tower inlet flue is set on the deacidification tower between the deacidification tower slurry storage section and the deacidification section, and the deacidification tower inlet flue is connected to the interior of the deacidification tower; the deacidification section includes a deacidification tower. The acid section spray pipeline and the deacidification section nozzle, the deacidification section spray pipeline is arranged on the inner wall of the deacidification tower along the horizontal direction, and the lower bottom surface of the deacidification section spray pipeline is evenly distributed along the horizontal direction A plurality of nozzles in the deacidification section are arranged at intervals, and the nozzles in the deacidification section are connected to the spray pipeline in the deacidification section; The input end of the cyclic deacidification system is connected to the slurry storage section of the deacidification tower, the output end of the cyclic deacidification system is connected to the input end of the spray pipeline in the deacidification section, and the spray pipe in the deacidification section The output end of the pipeline is connected to the nozzle of the deacidification section, and the circulating deacidification system can circulate the slurry in the slurry storage section of the deacidification tower into the spray pipeline of the deacidification section; The input end of the deacidification discharge system is connected to the slurry storage section of the deacidification tower, and the deacidification discharge system can discharge the slurry that meets the discharge requirements in the slurry storage section of the deacidification tower. 5. The double-tower purification system suitable for hazardous waste flue gas treatment according to claim 4, characterized in that: the cyclic deacidification system includes a deacidification circulation pump and a deacidification circulation pipeline, and the deacidification circulation pump The input end of the deacidification circulation pump is connected to the slurry storage section of the deacidification tower through the deacidification circulation pipeline, and the output end of the deacidification circulation pump is connected to the input end of the deacidification section spray pipeline through the deacidification circulation pipeline; The deacidification effluent system includes a deacidification effluent pump, and the input end of the deacidification effluent pump is connected to the slurry storage section of the deacidification tower. 6. The double-tower purification system suitable for hazardous waste flue gas treatment according to claim 4, characterized in that: the structure used in the deacidification section is a pneumatic mixing unit. 7. The double-tower purification system suitable for hazardous waste flue gas treatment according to claim 4, characterized in that: the secondary deacidification system also includes a swirl mixing section, which is coaxially arranged in the deacidification On the inner wall of the deacidification tower in the acid section, spray pipelines and nozzles of the deacidification section are arranged at intervals above and below the swirl mixing section. 8. The double-tower purification system suitable for hazardous waste flue gas treatment according to claim 4, characterized in that: the demister section includes a demister and a demister flushing water system, and the demister flushing water The system is capable of flushing the demisters. 9. The double-tower purification system suitable for hazardous waste flue gas treatment according to claim 8, characterized in that: the flushing water system of the demister includes a flushing water pump; or, the demister is a pneumatic high-efficiency demister device.