122 results about "Absorption column" patented technology

The invention discloses a flat plate membrane internal part for an absorption tower and the absorption tower. The flat plate membrane internal part comprises a plurality of vertically arranged flat plates and a supporting assembly for supporting and fixing the flat plates, a flow channel is formed between adjacent flat plates; the flat sheet membrane internal part comprises the following three structures: (I) the surface of a flat sheet is provided with continuous convex or continuous groove lines; the supporting assembly is an external frame; (2) discontinuous raised lines are arranged on the surface of the flat plate; the supporting assembly is an external frame; and (3) the supporting assembly comprises a plurality of connecting columns, and the adjacent flat plates are supported and fixed through the connecting columns arranged in a staggered mode. A fixed flowing channel in the flat sheet membrane internal part structure limits transverse movement of gas molecules, and uniform gas-liquid countercurrent contact is achieved. Meanwhile, by optimizing surface geometric lines and arrangement modes of the flat plates and the form of the supporting assembly, the gas-liquid contact area is further increased, the gas-liquid contact time is further prolonged, the gas-liquid mass transfer efficiency in the tower is improved, the pressure drop in the tower is reduced, and the energy consumption of the system is reduced.

The utility model discloses a sulfuric acid tail gas treatment absorption tower based on chemical equipment. The sulfuric acid tail gas treatment absorption tower based on the chemical equipment comprises a tower body, and a gas inlet box is mounted on one side of the tower body; a first cavity and a second cavity are formed in the air inlet box, a through hole is formed between the first cavity and the second cavity, a sealing plate is mounted in the through hole, an air inlet pipe and an air outlet pipe are mounted on the two sides of the first cavity, and the air outlet pipe is communicated with the interior of the tower body. According to the sulfuric acid tail gas treatment absorption tower based on the chemical equipment, the first cavity and the second cavity are arranged in the gas inlet box, and the filter screen and the collection box are respectively arranged in the two cavities, so that when the equipment is used, the through hole is sealed by using the sealing plate, and the absorption tower can be used for absorbing the sulfuric acid tail gas without influencing the normal use of the equipment. And the collection box is taken out and treated, so that normal treatment of the sulfuric acid tail gas is not affected, and the tail gas treatment efficiency of equipment is improved.

A system includes an absorption column configured to receive a lean solvent and an input gas with a feed gas or a feed vapor therein and induce co-current flow of the lean solvent and the input gas therethrough to form a mixture of a rich solvent with the feed gas or the feed vapor absorbed therein and the input gas with the feed gas or the feed vapor at least partially removed, and a post-absorption column processing assembly disposed downstream of the absorption column. The post-absorption column processing assembly includes a vessel configured to receive a single stream of the mixture from the absorption column and separate the mixture into gas and liquid, a first stream with a predominantly liquid phase of the mixture from the absorption column and separate gas therefrom, or a second stream of a predominantly gaseous phase of the mixture and separate the liquid therefrom.

The utility model discloses an absorption and desorption device with a safety instrument system, and particularly relates to the technical field of chemical engineering principle experiment teaching, which comprises a support frame, a water tank fixedly arranged at the top of the support frame, a water inlet pipe arranged at the top of the water tank in a penetrating manner, and an absorption pump fixedly arranged on one side of the water tank, an absorption mechanism is fixedly arranged on one side of the absorption pump and comprises a first conveying pipe fixedly arranged at the output end of the absorption pump, an absorption tower is arranged at one end of the first conveying pipe in a penetrating mode, a connecting pipe is arranged at the bottom end of the absorption tower in a penetrating mode, and a buffer tank is arranged at one end of the connecting pipe in a penetrating mode; and two liquid level sensors are arranged in the buffer tank in a penetrating manner. The absorption and desorption device effectively avoids the influence of flow velocity mismatching of absorption liquid and desorption liquid on the experiment process, further maintains stable experiment conditions and protects normal operation of equipment, and meanwhile, the whole absorption and desorption device is provided with a safety instrument system, so that the safety of the device is improved.

The utility model discloses a device for preventing slurry from overflowing from an exhaust pipe of an absorption tower, which relates to the field of chemical industry and comprises an extension pipe and a box body, the extension pipe is fixedly communicated with the box body, the extension pipe is positioned at the bottom of the box body, the bottom of the box body is fixedly communicated with the extension pipe through two return pipes, and the upper end of the extension pipe is fixedly connected with a second umbrella cap. A movable plate is slidably arranged in the extension pipe, and a movable rod is fixedly connected to the upper side of the movable plate. The foam removing device has the beneficial effects that the extension pipe is communicated with the exhaust pipe of the absorption tower, foam in the exhaust pipe can sequentially pass through the extension pipe and the through hole to enter the box body, meanwhile, the foam in the extension pipe can upwards push the movable plate, and the movable plate can drive the second foam removing net to upwards move through the movable rod; the second defoaming net can move downwards under the action of gravity, so that the second defoaming net can vertically move in a reciprocating mode, foam in the box body can be punctured through the second defoaming net to achieve active defoaming, and slurry is prevented from overflowing.

The embodiment of the present application provides a composite absorption tower and a carbon dioxide capture system. The composite absorption tower comprises a tower body, a filler support, a cooling assembly, a plurality of filler blocks and a liquid collecting tank. The tower body has a cavity, the tower body is provided with an air inlet and an air outlet, the filler support is arranged in the cavity, and the filler support and the tower body define a reaction chamber; the cooling assembly is arranged in the reaction chamber in a longitudinal and transverse staggered manner and is separated into a plurality of filler sub-chambers with the tower body, the plurality of filler blocks are correspondingly arranged in the filler sub-chambers, and the cooling assembly circulates refrigerant; and the liquid collecting tank is arranged below the reaction chamber to collect absorption liquid. Therefore, the absorption liquid changes from indirect heat exchange to direct contact heat exchange, so that the absorption liquid is kept at a relatively low temperature. Therefore, the composite absorption tower according to the embodiment of the present application has the advantages of reducing energy consumption, improving heat exchange efficiency and reducing equipment investment.

The invention provides an absorption tower. The absorption tower comprises an absorption tower main body, the stirring end of the stirring shaft is used for penetrating through the wall of the absorption tower main body and then extending towards the inner cavity of the absorption tower main body; the first end of the water sealing sleeve is used for being connected with the wall of the absorption tower body, the second end of the water sealing sleeve extends towards the stirring end of the stirring shaft relative to the first end, and the water sealing sleeve is located in an inner cavity of the absorption tower body and connected to the outer wall of the stirring shaft in a sleeving mode so that a cavity can be formed by the water sealing sleeve and the wall of the absorption tower body. The water sealing sleeve can effectively isolate desulfurization slurry in the inner cavity of the absorption tower body outside the mechanical seal, provides a good operation medium environment for the mechanical seal, and provides a fulcrum for the stirring shaft, so that the radial stress of the stirring shaft can be greatly reduced, and the bending fault of the stirring shaft can be effectively eliminated or reduced.

The utility model relates to a blow-down device, a demister and an absorption tower. The blow-down device comprises a flushing pipe; the water inlet main pipe extends into the absorption tower from the outside of the absorption tower and is connected with the water inlet; the pollution discharge assembly is connected with the pollution discharge port and extends out of the absorption tower from the inside of the absorption tower; and the control valve is arranged on the pollution discharge assembly to control a switch of the pollution discharge assembly. The flushing pipe is arranged in the demister of the absorption tower to clean the demister, the pollution discharge assembly is connected with the pollution discharge port and extends out of the absorption tower from the interior of the absorption tower, the water inlet main pipe is connected with the water inlet to provide cleaning water for the flushing pipe, and when the flushing pipe needs to be cleaned, the control valve is opened, and the control valve is closed. Impurities in the flushing pipe are discharged from the sewage draining outlet and the sewage draining assembly through flushing water entering from the water inlet, a new cleaning water inlet does not need to be connected, cleaning can be carried out under the non-stop condition, the flushing pipe is prevented from being blocked, therefore, the demister is prevented from being blocked, and the reliability and economical efficiency of the demister are improved.

The utility model relates to an acid-base absorption tower. The acid-base absorption tower comprises an absorption tower main body, a spraying mechanism, a plurality of flushing mechanisms, a spraying water tank, a medicine mixing water tank and a pipeline assembly. During use, comprehensive circulating spraying of waste gas in the shell is realized through the spraying water tank, the spraying pipe and the spraying nozzles, so that the absorption efficiency of the waste gas is improved, and the treatment cost of the waste gas is reduced; when the pH value of the absorption liquid in the spraying water tank reaches a preset pH value close to neutral, the absorption liquid in the spraying water tank is discharged into the liquid medicine mixing tank, and the absorption liquid close to neutral in the liquid medicine mixing tank is sprayed to the filler assembly and the demisting structure layer by utilizing the pipeline assembly and the plurality of flushing mechanisms, so that the filler assembly and the demisting structure layer are automatically cleaned and maintained; the waste gas treatment efficiency is further improved, and the waste gas treatment cost is further reduced; the absorption liquid meeting the concentration requirement in the liquid medicine mixing tank is automatically added into the spraying water tank through the pipeline assembly, so that the waste gas treatment efficiency is further improved, and the labor cost is effectively reduced.

The invention discloses a slurry backflow prevention drainage device for an absorption tower inlet flue, and relates to the field of slurry backflow prevention of absorption towers, the slurry backflow prevention drainage device comprises an absorption tower main body, one side of the absorption tower main body is fixedly connected with an inlet flue pipe, the absorption tower main body is rotatably connected with a mounting pipe, and the top end of the mounting pipe is fixedly connected with a transmission pipe; according to the slurry backflow prevention drainage device for the absorption tower inlet flue, the cleaning mechanism is driven by the driving mechanism to automatically operate, and slurry at a smoke inlet of the inlet flue pipe can be timely scraped and cleaned by the cleaning plate. In the cleaning process, the transmission column drives the cleaning plate to move in a reciprocating mode under the action of the arc-shaped transmission block and the spring, stretching cleaning is conducted during entering, secondary cleaning is conducted during moving out, and the situation that slurry is accumulated to block the pipeline is avoided. And meanwhile, the cleaning plate can prevent slurry falling from the absorption tower from entering the inlet flue pipe, so that pipeline internal corrosion caused by backward flowing of the slurry is prevented, and the pipeline damage risk is remarkably reduced.

A cleaning apparatus for metal smallware is provided having a washing chamber configured to carry out a washing cycle and suction means connected to the washing chamber and configured to carry out a discharge cycle, a main absorption column having a first side and a second side opposite each other, wherein the first side is hydraulically connected to the suction means and the second side is hydraulically connected to a supply duct. In particular, the main absorption column is configured to cause an interaction between a gaseous mixture supplied by the suction means and an absorption liquid supplied by the supply duct to perform chemical absorption of a solvent present in the gaseous mixture having air and solvent, in the absorption liquid, and reduce the concentration of solvent in the gaseous mixture having air and solvent.

The utility model relates to the technical field of spray devices, and specifically to a spray pipe structure for an absorption tower. The utility model includes a connecting beam arranged on the wall of the absorption tower, a mother pipe erected on the connecting beam, a branch pipe symmetrically arranged along the mother pipe, and a spray assembly connected to the end of the branch pipe, the mother pipe includes a pipe body, and interfaces arranged on both sides of the pipe body; the interfaces are respectively connected to the branch pipes through winding connectors; a spray assembly is arranged on the branch pipe, and the spray assembly includes a spray pipe I and a spray pipe II, wherein: spray pipe I is a 120° one-way hollow cone nozzle, which is arranged on the branch pipe away from the tower wall; spray pipe II is a 90° one-way hollow cone nozzle; by improving the spray pipe structure, a variety of spray assemblies are used to achieve uniform distribution and effective spraying of liquid in the absorption tower, and the stability and reliability of the system are ensured through structures such as flange connectors, winding connectors and saddles, thereby improving reaction efficiency and reducing operating costs.

The utility model discloses an absorption device for ethylene oxide desorption, which comprises a sterilization cabinet main body, an absorption tower, a desorption tower and a recovery tower, the absorption tower, the desorption tower and the recovery tower are connected with a plurality of corresponding pipelines wound on the outer side of the sterilization cabinet main body, and the absorption tower is filled with absorption liquid and is connected with the desorption tower through an absorption liquid circulating component arranged at the bottom of the absorption tower. A heating assembly for heating absorption liquid is arranged in the desorption tower, a condenser is arranged on a pipeline for connecting the outside of the desorption tower with the sterilization cabinet, and a circulating pump is arranged on a corresponding pipeline for connecting the absorption tower with the sterilization cabinet and is connected with a recovery tower of the absorption tower; according to the absorption device for ethylene oxide desorption, under continuous cooperative work of the absorption tower, the desorption tower, the condenser and the recovery tower, the overall structure is more compact, meanwhile, the functions are diversified, the energy utilization rate can be further increased through the integrated structure of the absorption device, and the phenomenon of energy and raw material waste is effectively reduced.

The utility model relates to the technical field of cleaning absorption tower paraformaldehyde, in particular to a device for cleaning absorption tower paraformaldehyde, which comprises an absorption tower, a preheater and an alkali liquor tank, a stuffing box section is arranged in the absorption tower, a tower tray is fixedly arranged at the bottom of the stuffing box section, a liquid distributor is arranged on the upper portion of the stuffing box section, and the absorption tower is communicated with a first desalted water pipeline. The absorption tower is communicated with a formaldehyde liquid pipeline, a circulating pipeline is communicated between the formaldehyde liquid pipeline and the first desalted water pipeline, the preheater is communicated with a boiler water pipeline, a high-temperature boiler water pipeline is communicated between the preheater and the formaldehyde liquid pipeline between the absorption tower and the circulating pipeline, and an alkali liquid pipeline is communicated between the alkali liquid tank and the circulating pipeline. The paraformaldehyde cleaning device is reasonable and compact in structure and convenient to use, can quickly clean paraformaldehyde in the absorption tower, prolongs the safe production operation time of the absorption tower, improves the economic production benefits of enterprises, and has the characteristics of safety, labor saving, simplicity, convenience and high efficiency.

The invention discloses a combined desulfurization device which comprises a raw material gas mixing tank, a raw material gas compressor, a gas buffer tank, an absorption tower I, an absorption tower II, a constant-temperature water bath, an atomization tank, a solution booster pump and a gas liquid separation tank, the input pipe is provided with a first branch pipe connected with the first absorption tower and a second branch pipe connected with the second absorption tower, the first absorption tower is provided with a first output pipe and a second output pipe, the first branch pipe, the second branch pipe, the first output pipe, the second output pipe and the atomization tank are all provided with valves, and the first absorption tower and the second absorption tower are arranged in the constant-temperature water bath. The solution booster pump is connected with the atomization tank through a pipeline; a desulfurizing agent is introduced into the absorption tower I, the absorption tower II and the solution booster pump. The combined desulfurization device has the beneficial effects of multiple desulfurization modes and flexibility in use. The invention further discloses a test evaluation device and a test evaluation method. The test evaluation device and the test evaluation method have the beneficial effects that evaluation is convenient, and the most suitable desulfurization method is quickly selected.

The utility model belongs to the technical field of waste treatment, and discloses a demisting device for an absorption tower, the demisting device comprises a demisting assembly I and a demisting assembly II, the demisting assembly I is coaxially mounted in an air inducing pipeline, a backflow cavity I is positioned between the side wall of a reaction cavity and the inner side wall of the absorption tower, the top end of the backflow cavity I is open, and the air inducing pipeline is communicated with the backflow cavity I; a second backflow cavity is formed between the outer side wall of the air inducing pipeline and the outer cavity wall of the top end of the reaction cavity, the second backflow cavity is communicated with the air inducing pipeline, a hydrophilic semi-permeable membrane is arranged at the communication position, and the side end of the second backflow cavity is communicated with the first backflow cavity; the bottom of the exhaust cavity communicates with an air inlet pipeline, and the lower end of the air inlet pipeline communicates with the air inducing pipeline and the first backflow cavity. The second demisting assembly is installed in the air inlet pipeline, and an exhaust port communicating with the outside is formed in the top of the exhaust cavity. According to the demisting device, the flowing path of liquid is changed, the situation that the liquid and gas are repeatedly mixed to generate mist again can be reduced, secondary demisting is conducted through the second demisting assembly, and the demisting effect is improved.

An absorption tower (100) having an absorbent phase separation function. The absorption tower (100) having an absorbent phase separation function comprises a tower body (1), a liquid collection assembly (2), a first flow stabilization assembly (3), a rich-phase solution outlet (13) and a lean-phase solution outlet (14), wherein the tower body (1) has an absorption cavity (11) and a phase separation cavity (12) which are sequentially arranged from top to bottom; the liquid collection assembly (2) is located at the top of the phase separation cavity (12), and is configured to collect an absorbent falling from the absorption cavity (11) and convey same to the middle of the phase separation cavity (12); the first flow stabilization assembly (3) comprises a first flow stabilization member (31) and a second flow stabilization member (32), the first flow stabilization member (31) and the second flow stabilization member (32) being arranged vertically opposite each other so as to guide the absorbent entering the phase separation cavity (12) to diffuse in a horizontal direction; and the rich-phase solution outlet (13) is configured to pump out a rich-phase solution located in the phase separation cavity (12), and the lean-phase solution outlet (14) is configured to pump out a lean-phase solution in the phase separation cavity (12).

The embodiment of the invention provides an electrochemical ammonia synthesis system based on a laser absorption spectrum and a control method. The system comprises a nitrogen-oxygen mixer, a plasma device, an absorption tower, an alkaline solution tank, a first detection device, a second detection device, a liquid adjusting valve and a gas adjusting valve. According to the detection result of the first detection device and the detection result of the second detection device, the opening degree of the gas adjusting valve is adjusted, so that the proportion of nitrogen to oxygen in the plasma device is achieved, the proportion of the content of NO2 and the content of NO conveyed into the absorption tower is increased, enough NO2 and NO are provided for the absorption tower, and the conversion rate of NOx-ions of the absorption tower is guaranteed. The opening degree of the liquid adjusting valve is adjusted to adjust the amount of the alkaline solution in the absorption tower, so that the conversion rate of NOx-ions of the absorption tower is improved, and the ammonia synthesis efficiency of the electrochemical ammonia synthesis system based on the laser absorption spectrum is further improved.

The invention relates to the technical field of absorption tower liquid level meters, in particular to an automatic alarm device for the liquid level of an absorption tower, which comprises a floating mechanism, the floating mechanism comprises a floating plate, and a lifting mechanism is arranged on the floating plate; the liquid level display mechanism comprises a transmission part, and the transmission part can be meshed with the lifting mechanism; the alarm component is arranged on the side wall of the absorption tower, and the transmission component converts the vertical position change of the lifting mechanism to the alarm component to be displayed; through the arrangement of the floating plate, the whole device can move up and down along with the change of the liquid level, through the cooperation of the gear and the rack, the up-down movement of the lifting mechanism is converted into the liquid level alarm display of the liquid level display mechanism, and through the cooperation of the guide column and the driving groove, the device can continuously give an alarm after the liquid level exceeds the alarm range.

The invention provides a Vocs-containing acid mist absorption system and method. The system comprises an absorption tower, an acid mist adsorption device communicated with the absorption tower, a fan communicated with the acid mist adsorption device, and an alkali tank communicated with the absorption tower through an alkali supplementing pump, a circulating pump and a sewage pump which are communicated with the absorption tower are respectively arranged on the side part of the absorption tower, a liquid level meter, a second pressure monitoring meter and a pH meter are arranged in the absorption tower, the circulating pump is respectively connected with a dynamic wave regulating valve and a spraying regulating valve, a first pressure monitoring meter is arranged on a pipeline between the dynamic wave regulating valve and the absorption tower, and a second pressure monitoring meter is arranged on a pipeline between the spraying regulating valve and the absorption tower. And an acid mist pipeline is arranged at an inlet of the absorption tower. Through primary dynamic wave absorption, primary filler absorption and primary activated carbon absorption, the acid mist containing Vocs in the extraction system is absorbed and discharged after reaching the standard, and it is guaranteed that the working environment in the extraction production system is clean.

The utility model relates to the technical field of wet desulphurization, in particular to an absorption tower system. The absorption tower system comprises an absorption tower, a slurry observation window, a foam observation window, a slurry circulating unit and a defoaming agent unit. The slurry observation window and the foam observation window are arranged on the outer wall of the absorption tower and are arranged in a staggered manner along the height direction of the absorption tower; the upper edge of the slurry observation window is as high as the lower edge of the foam observation window; and graduated scales are arranged on the slurry observation window and the foam observation window. The slurry circulating unit is communicated with slurry in the absorption tower, and the defoaming agent unit is communicated with the slurry circulating unit, so that a defoaming agent can be mixed with the slurry in the slurry circulating unit and then sprayed onto foam. The absorption tower system can visually monitor the liquid level height of slurry and the foam height, avoids the problems of overflow of the absorption tower and excessive or insufficient addition of a defoaming agent, improves the defoaming efficiency, saves the cost, and improves the safety and the performance of the absorption tower.

This invention relates to a demister and system for preventing surface scaling in absorption towers. The demister includes a main frame, within which a demister assembly is fixedly connected. The demister assembly includes several demister tubes arranged side-by-side, with connecting pipes fixedly connected between adjacent demister tubes. Each demister tube and connecting pipe has a fixedly connected baffle plate arranged axially along its axis, dividing the interior of the demister tube and connecting pipe into a first chamber and a second chamber. The sidewall of the second chamber has several micropores. The sidewall of the main frame has a hot gas inlet, a hot gas outlet, and an anti-clogging liquid inlet, respectively. The hot gas inlet and outlet communicate with the first chamber, while the anti-clogging liquid inlet communicates with the second chamber. During operation, the demister dilutes and removes slurry droplets adhering to the surface of the demister tubes, thereby preventing evaporation and crystallization to form scale, effectively solving the problem of scaling and clogging in traditional demisters.

The utility model discloses an absorption device for volatile substances in waste water, which comprises an absorption tower body, the upper end of the absorption tower body is connected with a gas inlet pipe, and the bottom of the absorption tower body is connected with a main discharge pipe, and is characterized in that the top of the absorption tower body is provided with a spraying device for spraying deodorant; an upper mixing structure and a lower mixing structure which are used for mixing odor and a deodorant and are detachably mounted are sequentially arranged in the absorption tower body from top to bottom, the absorption tower body is fixedly mounted on a support, and the main discharge pipe is obliquely mounted downwards; the absorption device can fully mix and deodorize odor, and is simple in structure, the deodorization efficiency is improved, and the mounting difficulty is reduced.

The utility model discloses a distributor assembly and an absorption tower, and belongs to the technical field of absorption towers. The distributor assembly is used for being arranged in an absorption tower body of the absorption tower and comprises a distributor, a supporting beam and a protection part, the two ends of the supporting beam are used for being connected with the inner wall of the absorption tower body, and at least part of the protection part is located between the supporting beam and the distributor and connected with the supporting beam and the distributor. In the direction from the distributor to the supporting beam, the orthographic projection of the protection piece covers the orthographic projection of the supporting beam, and the protection piece is made of an anti-corrosion material. According to the scheme, the protection part can play a role in shielding the supporting beam so as to prevent the acid slurry from directly dropping onto the supporting beam, and then the protection part can play a role in protecting the supporting beam so as to reduce corrosion of the acid slurry to the supporting beam, so that the service life of the supporting beam is prolonged.

The invention provides a top cover structure of an absorption tower and the absorption tower, the top cover structure of the absorption tower comprises: a shielding cover body covering the top of the absorption tower, the shielding cover body comprises a cover plate and a shielding cylinder, the shielding cylinder sleeves the outer side of a smoke purifying pipe of the absorption tower, and the cover plate covers the top of the absorption tower; the water storage tank is arranged on the cover plate and avoids the shielding cylinder, and a water inlet is formed in the top wall of the water storage tank; and the flow guide plate is in sealed connection with the shielding cylinder, is obliquely arranged on the top wall of the water storage tank and is communicated with the water inlet. According to the technical scheme, the problem that the pipe opening of the smoke purifying pipe is easily blocked by algae in the prior art is effectively solved.

The application provides an absorption tower, which comprises a tower body, a reaction cavity, a flue gas inlet arranged at the lower end of the tower body, and a flue gas outlet arranged at the upper end of the tower body; an absorption part arranged in the reaction cavity; a cleaning part arranged in the reaction cavity, the cleaning part being arranged above the absorption part, the inlet of the cleaning part being communicated with the absorption part to clean the gas; and a separation part arranged in the reaction cavity, the separation part being arranged above the absorption part, the separation part being provided with a first gas inlet, a first gas outlet and a first liquid outlet, the first gas inlet being communicated with the outlet of the cleaning part, the first gas outlet being communicated with the flue gas outlet, and the first liquid outlet being communicated with the outside of the tower body. The technical scheme provided by the application can solve the problem that in the related art, the absorbent is introduced into the carbon dioxide absorption tower, the absorbent is mixed with the flue gas, and part of the absorbent is discharged into the air along with the flue gas to cause air pollution.

The application provides a device and method for automatically controlling production of hydrogen chloride organic solution in a multistage falling film low-temperature absorption method, which comprises a hydrogen chloride cooler, a first falling film absorber, a second falling film absorber, an absorption tower and a tail gas cooler connected in sequence through a gas phase pipeline, a liquid outlet at the bottom of a solvent storage tank is connected to a liquid phase inlet of the absorption tower through a solvent delivery pipe, and a third flow regulating valve, a solvent cooler and a solvent delivery pump are arranged on the solvent delivery pipe. The application overcomes the shortcomings of the conventional process, such as difficulty in controlling absorption temperature, low absorption efficiency, poor uniformity of product concentration, difficulty in controlling impurity content and the like, and can realize continuous and stable production of qualified products meeting the requirements of the pharmaceutical intermediate industry.

The utility model relates to the technical field of formaldehyde production, and discloses an absorption tower with a cleaning function, which comprises an absorption part and a spraying part for spraying absorption liquid, a hollow cavity is formed inside the absorption part, a driving part is arranged outside the absorption part, a filler plate is rotatably connected inside the cavity along a horizontal plane, and the filler plate is connected with the spraying part. The output end of the driving part is connected with the filler plate, the filler plate is driven by the driving part to rotate in the cavity, the absorbing part comprises a bottom shell, the cavity is formed in the top of the bottom shell, a detachable top cover is arranged above the bottom shell, and a screw used for abutting against the top cover is connected to the bottom shell in a screwed mode; through the arrangement of the driving piece and the rotatable filler plate, when a person needs to clean the filler plate, the filler plate is driven to rotate through the driving piece, impurities attached to the filler plate fall off under the action of centrifugal force, then the device is cleaned, the cleaning difficulty of the device is reduced, and the cleaning efficiency of the device is improved.