199 results about "Emission standard" patented technology

The invention provides a self-coupling waste gas treatment system for treating VOCs in waste gas and a treatment method of the self-coupling waste gas treatment system, and belongs to the technical field of VOCs removal and recovery. The self-coupling waste gas treatment system comprises a microwave catalysis unit, wherein to-be-treated waste gas is introduced into the microwave catalysis unit, so that VOCs (Volatile Organic Compounds) are primarily decomposed and then enter a multi-stage condensation unit; the multi-stage condensation unit comprises at least two stages of condensation treatment parts and is configured to be in a cold source cyclic utilization mode, liquid separated after the waste gas to be treated is subjected to condensation treatment in the multi-stage condensation unit is recycled, and meanwhile, separated gas enters the drying adsorption unit; and the emission detection unit is configured to detect whether the purified waste gas from the drying adsorption unit reaches the emission standard or not, and the waste gas which does not reach the emission standard is re-introduced into the microwave catalysis unit to be circularly treated. The self-coupling system disclosed by the invention is high in integration level, and the whole-process efficient management and control of VOCs from pretreatment, deep recovery and fine treatment to up-to-standard emission is realized.

The invention discloses a sludge low-temperature oxidation treatment system and method. The system comprises a pretreatment unit, a feed lifting mechanism, a low-temperature oxidation furnace, a flue gas purification unit and an automatic control unit. The low-temperature oxidation furnace is divided into a feeding area, a low-temperature oxidation area and an air distribution and slag discharge area from top to bottom, an air distribution plate is provided with air outlets which are uniformly arrayed, the temperature of the low-temperature oxidation area is controlled to be 420-480 DEG C, and generation of dioxin is inhibited from the source. The pretreatment unit is used for mixing sludge, biomass and quartz sand to form a loose breathable material to prevent the sludge from hardening; the method comprises the steps of material mixing, continuous feeding oxidation, temperature closed-loop regulation and control, flue gas purification and ash treatment, high-water-content municipal sludge can be stably treated, the energy consumption is low, the dioxin generation amount is low, flue gas emission reaches the standard, ash can be recycled, and the method is suitable for large-scale municipal sludge harmless treatment.

The utility model provides a waste gas adsorption and purification treatment device, which belongs to the technical field of environmental protection equipment and comprises a treatment box body, an adsorption and purification component is mounted in the treatment box body, and an airflow regulation and control component is mounted on the adsorption and purification component. According to the utility model, the adsorption purification assembly is arranged, a three-stage progressive structure of a primary filter layer, an activated carbon adsorption layer and a molecular sieve purification layer is adopted, and a front-end oil mist separation net is matched, so that dust and oil mist particles can be intercepted stage by stage, organic waste gas, harmful gas and peculiar smell molecules are efficiently adsorbed, and the purification is thorough; the multiple layers of filter materials are mounted in a sliding groove plugging manner, so that disassembly, replacement and maintenance are convenient, and the use cost is reduced; waste gas can evenly penetrate through all the adsorption layers through the flow guide partition plates and the evenly-distributed flow guide through holes, airflow short circuit and local accumulation are avoided, the adsorption capacity of filter materials is fully utilized, the overall purification efficiency is improved, the service life is prolonged, and it is guaranteed that the waste gas reaches the standard to be discharged.

This invention provides a fuel injection method for an engine, an engine, a vehicle, and a computer-readable storage medium, relating to the field of vehicle exhaust emission control technology. The fuel injection method provided by this invention includes the following steps: Before the engine reaches a stable idle speed, fuel is injected at a preset fuel pressure during the first intake stroke and the first compression stroke of each working cycle, wherein the fuel injection mass ratio of the first intake stroke to the first compression stroke is greater than 4:1, and the preset fuel pressure ranges from 20 to 50 MPa. When the engine speed is at a stable idle speed, fuel is injected during the second intake stroke and the second compression stroke of each working cycle at a preset fuel pressure, wherein the fuel injection mass ratio of the second intake stroke to the second compression stroke is greater than or equal to 4:1. This method ensures that the vehicle's exhaust emission level meets the requirements of Euro 6 emission standards without requiring a particulate filter, thus optimizing the engine's original emissions.

The utility model provides a waste cracking tail gas treatment device. The waste cracking tail gas treatment device comprises a bag-type dust collector, a washing tower, a desulfurizing tower, a dry filter and an activated carbon device, the waste cracking tail gas enters the bag-type dust collector from a gas inlet of the bag-type dust collector, a gas outlet of the bag-type dust collector is communicated with a gas inlet of the washing tower, a gas outlet of the washing tower is communicated with a gas inlet of the desulfurizing tower, a gas outlet of the desulfurizing tower is communicated with a gas inlet of the dry filter, and a gas outlet of the dry filter is communicated with a gas inlet of the activated carbon device. Heavy metal substances such as mercury in the tail gas are removed through the washing tower and the activated carbon device, so that the problem that the mercury content of the tail gas discharged into the atmosphere exceeds the standard is solved; intercepting particulate matters in the tail gas through filtering equipment such as a bag-type dust collector and a dry filter; pollutants such as acidic substances, nitrogen oxides and carbon monoxide in the tail gas are removed through the desulfurization tower, the carbon monoxide removal device and the oxynitride treatment device, and finally the tail gas reaches the standard and is discharged.

The application discloses a kind of garbage incineration flue gas treatment's purification discharge analysis management system, it is related to garbage incineration flue gas purification technical field, still exist in garbage incineration flue gas purification discharge process after flue gas purification directly discharges, cannot accurately analyze flue gas, leading to flue gas cannot be handled in stages, and further reduce the efficiency of flue gas treatment purification;Including data acquisition unit, garbage analysis unit, flue gas analysis unit, flue gas processing unit and management terminal;By comparing and analyzing the flue gas components generated by garbage incineration and the concentration of each component with the local flue gas emission standard value and the sieve level purification treatment threshold of each stage flue gas purification module, the n flue gas purification modules are divided into three sets of different levels of flue gas purification efficiency, the purification discharge analysis management of garbage incineration flue gas treatment is realized, and the efficiency level of each stage flue gas purification module is obtained by analyzing and modeling the front and rear stage flue gas information, to realize the online management of flue gas purification module.

The utility model relates to a flue gas treatment system and a graphitization furnace. The flue gas treatment system comprises a cooling tower which is communicated with a flue gas outlet of the graphitization furnace and is used for cooling initial flue gas; the incinerator communicates with a flue gas outlet of the cooling tower and is used for combusting flue gas discharged by the cooling tower; and the secondary treatment equipment communicates with a flue gas outlet of the incinerator and is used for recycling heat of the first flue gas discharged by the incinerator and purifying the first flue gas. According to the flue gas treatment system, through cooperative arrangement of the cooling tower, the incinerator and the secondary treatment equipment, the probability that functional parts in the incinerator and the secondary treatment equipment are damaged due to the too high temperature of flue gas can be reduced. And meanwhile, the difficulty of heat recovery and purification of the flue gas by secondary treatment equipment at the rear end can be reduced. Therefore, the purification effect of the secondary treatment equipment at the rear end on the flue gas is improved, the flue gas exhausted from the tail end meets the emission standard, and the pollution to the environment is reduced.

The application discloses an anti-blocking high-concentration VOCs recovery device, which comprises an anti-blocking VOCs pre-condensation module, an activated carbon adsorption and purification module and an anti-blocking VOCs closed recovery module; the anti-blocking VOCs pre-condensation module is fixedly connected with the activated carbon adsorption and purification module; and the activated carbon adsorption and purification module is fixedly connected with the anti-blocking VOCs closed recovery module. The anti-blocking VOCs pre-condensation module can recover most of VOCs, and is provided with a device for preventing liquid icing and blocking; the remaining non-condensable gas is adsorbed and purified by the activated carbon adsorption and purification module; the anti-blocking VOCs pre-condensation module at the front end of the whole device not only recovers most of VOCs, but also reduces the adsorption burden of the activated carbon adsorption and purification module; the activated carbon adsorption and purification module at the rear end ensures that the VOCs concentration of exhaust gas meets the emission standard; and the saturated activated carbon is regenerated and VOCs are recovered by the anti-blocking closed VOCs recovery module.

The present application relates to a kind of ammonia nitrogen temperature homologous state under denitration real-time monitoring method and equipment thereof, the present application discloses homologous state under denitration real-time monitoring method and equipment, the present application is integrated by encapsulation ammonia nitrogen temperature homologous integrated measuring point, realize the synchronous collection of flue gas ammonia concentration, nitrogen oxide concentration, flue gas temperature in the same spatial position, after nonlinear temperature drift correction based on same point real-time temperature, construct "static base quantity+dynamic increment+adaptive correction" three-level ammonia injection amount calculation logic, complete closed-loop monitoring loop is formed by collocation grid partition control.This application eliminates sampling inherent error from source, can quickly respond to working condition change, give consideration to nitrogen oxides emission standard and ammonia escape control, effectively reduce ammonia consumption and operation risk, improve the stability and economy of denitration system operation, adapt to industrial denitration long-period continuous operation demand.

A recovery treatment method for ammonia-containing tail gas in the later stage of aromatic nitrile synthesis. The method comprises: introducing the ammonia-containing tail gas sequentially into a first spray absorption tower and a second spray absorption tower; absorbing, in a liquid phase, ammonia from the ammonia-containing tail gas to realize the recovery of ammonia; and directly discharging exhaust gas; an absorbent A in the first spray absorption tower is water; and an absorbent B in the second spray absorption tower comprises glycolic acid, vinylphosphonic acid and aluminum sulfate. In the method, the recovery of ammonia from the ammonia-containing tail gas is increased by means of two-stage spraying, and the ammonia content in the treated tail gas is low and satisfies emission standards.

The utility model discloses a gas treatment device after gas pressure protection and safety pressure relief of an excimer laser, which comprises a rupture disk device (1) with one end capable of being communicated with a resonant cavity of the excimer laser. The other end of the rupture disk device (1) is provided with a one-way safety valve (2) which can be jacked open by working gas leaked from the resonant cavity when a diaphragm (14) of the rupture disk device (1) is ruptured, and the one-way safety valve (2) is connected with an absorption device (3) which can purify the leaked working gas; and the absorption device (3) is provided with an exhaust port (4) capable of exhausting purified gas. According to the utility model, the structure is simple, external air can be prevented from flowing backwards into the excimer laser, the internal gas is kept pure, the discharged gas is absorbed and purified, so that the discharged gas can reach the emission standard, and the harm to workers and the environment is eliminated.

This invention relates to a microwave combustion exhaust gas treatment device, comprising: an ignition tube, a combustion tube, a resonant housing, and a microwave generator. The microwave generator is fixedly connected to and communicates with the resonant housing, the resonant housing is fixedly connected to and communicates with the ignition tube, and the lower part of the ignition tube is fixedly connected to and communicates with the combustion tube. When treating small-flow exhaust gas, this invention allows the microwave generator to be used alone, saving energy and reducing costs. When treating larger-flow exhaust gas, the combined microwave and combustion treatment provides greater processing capacity, and the energy consumption and cost of combined treatment are lower than using natural gas combustion alone, thus reducing the energy consumption and cost of exhaust gas treatment. When the microwave generator malfunctions or other external microwave malfunctions occur, the exhaust gas flow into the ignition tube and combustion tube increases. By increasing the amount of natural gas and air, the emergency exhaust gas treatment capacity is improved, preventing the exhaust gas from being untreated and causing harmful components to exceed emission standards.

The invention provides microalloyed high-modulus high-strength nodular cast iron which comprises the following components: 2.8-3.0% of C, 4.0-4.3% of Si, 0.3-0.5% of Mn, 0.7-1.0% of Cr, 0.5-0.6% of Mo, 1.2-1.5% of Ni, 0.8-0.9% of Cu, 0.1-0.3% of V, 0.01-0.05% of Re, less than or equal to 0.03% of S, less than or equal to 0.05% of P and the balance of iron, and (Ni + Cu) / (Cr + V) is more than or equal to 2.0 and less than or equal to 2.5. The nodular cast iron still keeps the tensile strength larger than or equal to 88 MPa and the high modulus characteristic at the high temperature of 820 DEG C. The material has the advantages of being low in alloy cost, stable in high-temperature performance and good in structural rigidity, and is suitable for high-temperature heat-resistant components such as engine exhaust manifolds under the national sixth emission standard, and the invention further provides a preparation method of the microalloyed high-modulus and high-strength nodular cast iron.

The utility model discloses a treatment system for residual liquid and waste gas after cleaning of a tank car, which comprises a base for supporting the tank car; the air pipe is communicated with an air inlet of the tank car; the gas collecting hood is communicated with a gas phase valve of the tank car and is respectively provided with an unorganized waste gas branch pipe, a low-concentration waste gas branch pipe, a high-concentration waste gas branch pipe and an acidic waste gas branch pipe; the cooling and dehumidifying unit is communicated with the unorganized waste gas branch pipe and the low-concentration waste gas branch pipe; the cryogenic dehumidification unit is communicated with the high-concentration waste gas branch pipe and the cryogenic recovery device; the alkali washing unit is communicated with the acid waste gas branch pipe and the cooling and dehumidifying unit; and the tail gas treatment device is communicated with the cooling and dehumidifying unit and the cryogenic recovery device. By means of the unorganized waste gas branch pipe, the low-concentration waste gas branch pipe, the high-concentration waste gas branch pipe and the acid waste gas branch pipe which are arranged on the gas collecting hood, tank trucks containing different chemical medium types are cleaned and then subjected to tail gas dehumidification and cooling pretreatment, then tail gas aftertreatment and up-to-standard emission are conducted, the range of treatment media is wide, and tail gas treatment meets the environment-friendly standard.

This utility model discloses a urea hydrolysis reaction mixing device, relating to the field of automotive engine exhaust gas purification technology. It includes a housing; an exhaust gas inlet pipe is connected to the end of the housing, the exhaust gas inlet pipe has a tangential swirl air intake structure, and a mixing pipe is connected to the exhaust gas inlet pipe. High-temperature exhaust gas from the engine enters through the exhaust gas inlet pipe, undergoes initial diffusion through the mixing pipe, and multiple primary guide vanes divide the exhaust gas into multiple turbulent streams, extending the airflow path. Urea solution is introduced and delivered to the urea nozzle through the urea inlet pipe. Compressed air provides auxiliary atomizing airflow, further refining the droplets. The urea droplets contact the high-temperature exhaust gas within a honeycomb microchannel, and the airflow refracts within the mixing chamber, extending the residence time. The guide hole aperture gradient design controls the flow rate and avoids excessively high local ammonia concentrations. By optimizing the mixing and reaction process, it can more effectively reduce nitrogen oxide emissions in the exhaust gas, meeting stricter emission standards and improving mixing and reaction efficiency.

The invention discloses a VOCs waste gas continuous treatment device and method based on secondary activated carbon adsorption in the field of air pollution treatment, and aims to solve the technical problems that an existing VOCs waste gas treatment process depends on a boiler, treatment is discontinuous, the investment cost is high, and adaptability is poor. According to the device, an original gas collection pipeline and a fan of an enterprise are reformed, and a first-stage granular activated carbon adsorption unit and a second-stage fine-particle-size activated carbon adsorption unit are connected in series to form a closed-loop treatment system of collection, graded adsorption, pressure-boosting discharge and maintenance and update; according to the treatment method, continuous deep purification of the VOCs waste gas with medium and low concentration is realized by controlling the retention time of the waste gas in the two-stage adsorption unit and the particle size gradient of the activated carbon. The investment is less than or equal to 10 thousand yuan, the treatment gas amount is 8000m / h, the NMHC emission concentration is less than or equal to 50mg / m, the secondary standard of the table 2 of Integrated Emission Standard of Air Pollutants (GB16297-1996) is met, the device can continuously and stably run for more than or equal to 6 months in 24 hours, and the device is adaptive to the waste gas treatment requirements of chemical devices such as acetic acid, methanol and the like.

The utility model provides a metal arsenic flue gas purification device. According to the metal arsenic flue gas purification device, a kiln is fixedly connected to the position, close to one side, of the top of a bottom plate, a flue gas collecting header pipe is installed at the top of the kiln, a connecting pipe is installed at the top end of the flue gas collecting header pipe through a connector, and a filtering tower is installed at the position, close to the other side, of the top of the bottom plate; a plurality of first intercepting parts used for being connected with impurities are installed in the filtering tower, a sealing cover is installed at the top of the filtering tower, and an air inducing device used for providing suction force is installed at the top of the sealing cover. According to the metal arsenic flue gas purification device provided by the utility model, about 99.95% of metal arsenic particulate matters are removed by utilizing the first intercepting part in the filter tower, then the metal arsenic flue gas enters the alkali liquor washing tower to remove particulate matters escaping from flue gas, and then enters the alkali liquor washing, dust-removing and demisting integrated tower to be purified; the metal arsenic particles in the flue gas are thoroughly removed, and the environment-friendly emission standard is achieved.

The utility model discloses a medium-frequency exhaust emission device, which belongs to the field of metal processing and comprises a mounting bottom plate. The exhaust assembly is arranged on the upper surface of the mounting bottom plate in a penetrating manner; the impurity receiving assembly is arranged on the inner side of the exhaust assembly and comprises a mounting ring which is arranged on the inner side of the exhaust assembly; the sealing plate is arranged on the inner side of the exhaust assembly in a sliding manner; the filtering assembly is detachably arranged on the inner side of the exhaust assembly, and the filtering assembly is located above the impurity receiving assembly. According to the intermediate-frequency waste gas emission device disclosed by the utility model, through the cooperative work of the exhaust assembly, the impurity receiving assembly and the filtering assembly, the exhaust funnel in the exhaust assembly can stably exhaust waste gas generated by an intermediate-frequency smelting furnace, and the filtering module of the filtering assembly can effectively filter and block harmful substances in the waste gas; and the waste gas is discharged into the air after reaching the safe discharge standard.

The utility model relates to the technical field of steelmaking processing, and discloses a converter steelmaking dedusting and spraying device capable of achieving full contact reaction, the converter steelmaking dedusting and spraying device comprises a bottom box, a dedusting cylinder is fixedly installed on the top of the bottom box, a same transmission box is fixedly installed on the right side of the dedusting cylinder and the right side of the bottom box, and a same function box is fixedly installed on the top of the transmission box and the top of the dedusting cylinder; a motor is fixedly installed on the inner wall of the top of the function box, an output shaft of the motor extends into the dust removal cylinder, and a spraying dust removal mechanism is arranged in the dust removal cylinder. A sweeping mechanism and a scraping mechanism are arranged on an output shaft of the motor. Compared with the prior art, the dust removal device has the following advantages and effects that by arranging the spraying mechanism, smoke dust particles can be captured by water mist and settle downwards along with water flow under the action of gravity, then the purpose of primary dust removal is achieved, by arranging the filter box, gas can be further purified, the exhausted gas reaches the environment-friendly emission standard, and the environment-friendly effect is achieved. And environmental pollution in the steelmaking process is reduced.

The utility model relates to dust purification technical field discloses a kind of self-suction type smoke dust purification device, including box, the dust removal cylinder is fixedly connected in the box inner wall front side, the filter cylinder is equipped in the dust removal cylinder inside, dust collection groove is equipped below the dust removal cylinder, the filter cylinder bottom wall is connected by ash chute with dust collection groove, the box inner wall middle part is fixedly connected with spray cylinder, the dust removal cylinder is connected with spray cylinder by conveying smoke pipe and is communicated, the spray cylinder below is equipped with sedimentation chamber;The utility model first intercepts large particle dust by filter cylinder, secondly dense spray is sprayed by water mist spray head in spray cylinder, fine dust is captured to form sewage, finally microorganism is inactivated by ultraviolet lamp, activated carbon plate adsorbs peculiar smell and harmful gas, clean air is discharged from air outlet groove, to form multiple filtering mechanism, four stages are progressively ensured, dust, microorganism, peculiar smell and other pollutants in smoke dust are efficiently removed, satisfy environmental protection emission standard.

The invention relates to the technical field of waste gas treatment, and discloses an industrial furnace waste gas dedusting and degassing integrated environment-friendly treatment device which comprises a bottom gas inlet bin, supporting legs are evenly arranged on the periphery of the bottom end of the bottom gas inlet bin, and the bottom end of the bottom gas inlet bin communicates with a gas inlet connecting pipe; the top end of the bottom gas inlet bin is communicated with a waste gas filtering bin, and the waste gas filtering bin is provided with a waste gas environment-friendly treatment assembly, the waste gas filtering bin is arranged at the top of the bottom gas inlet bin, and the waste gas environment-friendly treatment assembly is arranged on the waste gas filtering bin; a particle filter screen in the waste gas environment-friendly treatment assembly is inserted into the top of a waste gas filter bin, and an activated carbon adsorption plate arranged in a waste gas adsorption cylinder can adsorb filtered gas again, so that it can be effectively guaranteed that waste gas meets the safe emission standard, no new harmful gas is generated in the treatment process, and the environment-friendly treatment effect is achieved. Compared with a traditional combustion method, waste gas treatment is more environmentally friendly.

The invention discloses a vehicle transportation carbon emission analysis method and device, and the method comprises the steps: obtaining an operation condition variable and an environment variable according to a vehicle pollutant emission standard and a vehicle type; determining a transportation carbon footprint factor of each vehicle type according to the operation condition variable and the vehicle type; establishing a dynamic correction coefficient model according to the operation condition variable and the environment variable; and based on activity level data in a transportation stage, the dynamic correction coefficient model and the transportation carbon footprint factor of each vehicle type, carrying out carbon emission analysis in an operation stage to obtain the total carbon emission of each vehicle type in the transportation stage and the carbon emission of a unit product in the transportation stage. According to the method, dynamic calculation and accurate accounting of the carbon emission of different vehicle types in the transportation stage under different operation working conditions and environment conditions can be realized, so that the real-time performance, the accuracy and the applicability of carbon emission analysis are improved.

The application is suitable for the technical field of NOx concentration prediction, and provides an intelligent ammonia injection denitration prediction system based on a time sequence neural network model, which comprises the following steps: S1, data acquisition; S2, data processing, the importance of the data is preliminarily calculated through simple multiple linear regression analysis; the application solves the problems that the current denitration ammonia injection system adopts fixed ammonia distribution, cannot adapt to the variability of denitration inlet flue gas NOx under the condition of unit flexibility peak shaving, and has problems such as excessive ammonia injection and insufficient ammonia injection amount, under the condition of meeting the unit outlet emission, excessive ammonia injection will cause the increase of consumables and the problems such as the blockage of the boiler air preheater, and too little ammonia injection amount cannot meet the NOx emission standard, the accuracy of improving the inlet NOx concentration is achieved, the average error of the predicted value and the reference value of the inlet NOx concentration is reduced, and the power plant is effectively helped to control the ammonia injection amount in real time according to the prediction result, so as to realize intelligent quantitative ammonia injection.

This utility model discloses a multi-stage dust filtration and purification device for sandblasting machines, belonging to the technical field of dust purification devices. It includes: a sandblasting machine body; a connecting pipe fixedly installed on one side of the sandblasting machine body; a purification box installed at one end of the connecting pipe; a spray assembly inside the purification box; and a water tank, which has a short pipe fixedly installed on the top of the water tank and a water outlet pipe at the top of the short pipe. This achieves preliminary dust purification, significantly reducing the filtration load on subsequent filter boxes one and two, extending the service life of the primary and secondary filter plates, and significantly reducing the dust content in the exhaust gas, effectively meeting environmental emission standards, reducing dust pollution to the atmospheric environment, and greatly shortening the time for cleaning and replacing filter plates. It also avoids performance degradation of the entire purification device due to local filtration failure, and the double fixing prevents the filter plates from loosening or shifting during operation.

The utility model relates to the technical field of waste gas treatment devices, in particular to a secondary activated carbon treatment device for waste gas, which comprises a bottom plate, the device further comprises a temporary treatment tank, a conveying pipe, a first air pump, an electromagnetic valve, a standby activated carbon bed, a circulating pipeline, a second air pump, a valve and a first exhaust pipe, the temporary treatment tank is installed on the surface of the upper end of the bottom plate, the surface of the upper end of the temporary treatment tank is connected with one end of the conveying pipe, and the first air pump is installed on the surface of the conveying pipe; when the main activated carbon bed is saturated or the device has faults such as equipment damage and power failure, the device guides waste gas to the standby activated carbon bed in the temporary treatment tank for adsorption treatment by utilizing the air pump I through switching of the electromagnetic valve, and the waste gas passes through the standby activated carbon bed in a circulating manner through the air pump II and the circulating pipeline for multiple times, so that the emission standard is ensured to be reached; and the treated gas is discharged through the exhaust pipe I, so that the untreated harmful gas is effectively prevented from being directly discharged into the atmosphere, the production continuity is ensured, and the environment is protected.

This application discloses a system and method for removing particulate matter from sulfur recovery tail gas. The system includes a sulfur recovery exhaust gas pipeline with its inlet connected to a sulfur production furnace; a steam pipeline connected to the sulfur recovery exhaust gas pipeline; a steam injection port on the steam pipeline for injecting steam into the sulfur recovery exhaust gas pipeline; a mixing device located downstream of the steam injection port within the sulfur recovery exhaust gas pipeline for mixing the steam with the sulfur recovery tail gas and liquefying the elemental sulfur in the sulfur recovery tail gas; and a desulfurization tower with its inlet connected to the outlet of the sulfur recovery exhaust gas pipeline. The desulfurization tower is equipped with a demister for capturing the liquid elemental sulfur. In this system, before the sulfur recovery tail gas enters the desulfurization tower, the solid elemental sulfur in the gas is liquefied by steam heating. The demister effectively captures the liquefied elemental sulfur, thereby effectively reducing the particulate matter concentration in the final exhaust gas and ensuring compliance with emission standards.

The invention belongs to the technical field of post-treatment, and particularly relates to waste gas comprehensive treatment equipment and method.The equipment comprises a smoke suction hood, a cyclone spray tower, an electrostatic adsorption device and a centrifugal fan which are sequentially connected through a pipeline, and further comprises a first filter box, an evaporation barrel and an oil storage barrel which are sequentially connected with the electrostatic adsorption device; wherein the smoke suction hood is arranged corresponding to the oil press, the centrifugal fan is connected with the smoke exhaust barrel, and waste gas generated by the oil press enters the smoke suction hood under the driving of the centrifugal fan, is treated by the cyclone spray tower and the electrostatic adsorption device in sequence, and is discharged from the smoke exhaust barrel through the centrifugal fan. Waste oil obtained by adsorption of the electrostatic adsorption device is stored in the oil storage barrel after being treated by the first filter box and the evaporation barrel. The equipment can purify air pollutants such as oil drops, dust, particulate matters and VOCs in waste gas, so that the waste gas is discharged after reaching the standard, waste oil can be recycled from the waste gas, resources are recycled, and the environment-friendly treatment cost is reduced.

The utility model belongs to the technical field of waste gas treatment, and particularly relates to a waste gas treatment device for a marine diesel engine, a silicon carbide filter element is arranged in a waste gas inlet and used for filtering particles in waste gas, and the output end of the waste gas inlet is connected with a pipeline at the lower end of the outer wall of a nitrogen oxide treatment mechanism. A liquid storage tank is connected to the axis of the top of the nitrogen oxide treatment mechanism through a pipeline, an electromagnetic valve is arranged between the axis of the bottom of the liquid storage tank and the axis of the top of the nitrogen oxide treatment mechanism, and the output end of the nitrogen oxide treatment mechanism is connected with the input end of the desulfurization mechanism through a pipeline; by arranging the silicon carbide filter element, particulate matters in waste gas can be effectively filtered, the heat loss is less, the normal operation of the nitrogen oxide treatment mechanism is prevented from being influenced, residual sulfides in the waste gas can be removed by arranging the desulfurization mechanism, the waste gas reaches the emission standard, and the practicability of the device is improved.

The utility model relates to waste water treatment technical field proposes a kind of multifunctional integrated medical wastewater treatment device, comprising: fixed shell and the mounting bracket being arranged in its one side, fixedly installed the roller cylinder in fixed shell interior, the inside of roller cylinder is provided with spiral conveying rod, and both ends of spiral conveying rod are rotatably connected between fixed shell, the side of fixed shell is fixedly installed with first motor by motor bracket, by the roller cylinder in fixed shell, the larger suspended solids and particulate in waste water can be intercepted and removed, to reduce the load of subsequent processing unit, both improve overall processing efficiency, ensure that wastewater treatment device stable operation, also help to ensure that final effluent water quality meets the standard, meet the emission standard reduce environmental pollution risk, simultaneously, start first motor, to make it drive spiral conveying rod to rotate, further can remove the impurities attached on the inner wall of roller cylinder, prevent blockage and ensure interception effect.