34results about How to "Purification process is stable" patented technology

Provided are: an exhaust gas catalytic purging unit capable of long-term efficient purging of microparticle components such as hydrocarbons, carbon monoxide, nitrogen oxides and soot contained in exhaust gas from a lean-burn engine; a method for purging exhaust gas using such an exhaust gas catalytic purging unit; and a diesel automobile equipped with this exhaust gas catalytic purging unit. An exhaust gas catalytic purging unit is provided in which an oxidation catalyst (DOC) comprising noble metal components for oxidation of nitrogen oxides (NOx) contained in exhaust gas emitted from a diesel engine, a reducing agent spray means for feeding a reducing agent selected from a urea component or an ammonia component, and a selective reduction catalyst (SCR) for reduction by bringing nitrogen oxides (NOx) into contact with the reducing agent are disposed in this order from the upstream side of an exhaust gas stream, wherein the selective reduction catalyst (SCR) is zeolite or crystalline metal aluminophosphate that does not contain a noble metal component, and a trap means for collecting the noble metal component evaporated from the oxidation catalyst (DOC) is disposed between the oxidation catalyst (DOC) and the selective reduction catalyst (SCR).

The invention relates to the technical field of gas purification, and discloses an environmental protection device for removing smoke and odor, comprising a diversion pipe and a fan arranged at the gas outlet end of the diversion pipe, and a gas purification component is arranged inside the diversion pipe; the gas purification component includes The front purification part and the rear purification part connected by two connecting columns, the front purification part and the rear purification part are composed of the same mechanism, and the distance between the front purification part and the rear purification part is the length of the connection column. The purification part is adsorbed by activated carbon, and part of it moves from the lower end of the front purification part to the rear purification part. At this time, part of it is adsorbed by the activated carbon of the rear purification part. Finally, a small amount of polluted gas flows through the gap between the front purification part and the rear purification part. After being purified by multi-stage gas purification components, it can maximize the removal of smoke and odor from polluted gas, and the gas circulation is smooth, which can ensure the stability of gas purification after long-term use.

The invention discloses a device for absorbing and concentrating carbon dioxide containing exhaust gas. The device mainly consists of a carbon dioxide exhaust gas absorbing device and an EDI (Electronic Data Interchange) carbonic acid recovery device, wherein the EDI carbonic acid recovery device mainly consists of an anode chamber, a concentration chamber and a cathode chamber. The chambers are separated by ion exchange membranes. Carbon dioxide in exhaust gas is first reacted with an alkaline absorption liquid electrically generated in the carbon dioxide exhaust gas absorbing device to be converted into carbonate, and the absorbent is regenerated and pure carbonic acid is harvest in the EDI carbonic acid recovery device finally. The pure carbonic acid harvested can be directly used or used for extracting pure carbon dioxide. The device has the advantages of electric regeneration and circulation of the absorption liquid, capture of carbon dioxide, regeneration of the absorbent and extraction of carbon dioxide, easy operation, cost saving and the like. Carbon dioxide generated can be used as raw materials for producing chemical fertilizers and the like and manufacturing organic fuel such as methanol and the like.

The present invention relates to an air cleaner capable of stably cleaning the air in the entire room by properly controlling the airflow in a room under various installation environments. The air cleaner (1) is equipped with a casing (2), an air inlet (4), an air outlet (5), a fan unit (6), a deodorizing filter (10), a dust collection filter (11), a movable louver ( 12), drive unit (13), shaking head mechanism (14), internal detection device (15), external detection device (16), control device (18), etc. The wind direction of the air blown out from the air outlet (5) is changed between the front and the top and in the vertical direction by the movable louver (12), and is changed in the left and right direction by the oscillating mechanism (14). An external detection device (16) detects indoor information including at least a distance from a wall of a room. Moreover, the control device (18) controls at least one air supply parameter in the wind direction, air volume and wind speed of the blown air based on the detection result of the indoor information, so that the blown air is formed and returned to the air cleaner (1 ) recirculating airflow at the position.

The invention discloses a device and a method for electro-dynamic migration recovery and cyanogen-containing waste gas purification. The device consists of an electric waste gas treatment device and a cathode electro-Fenton device, wherein the electric waste gas treatment device consists of an anode chamber and a cathode chamber which are separated by an ionic selective permeable membrane, a voltage is applied to two ends of the device, the waste gas enters the cathode chamber and is converted into CN<->, the CN<-> penetrates an ion exchange membrane and enters the anode chamber under the action of electric migration, and high-concentration HCN gas is obtained in the anode chamber, collected by a HCN recovery storage tank and reused. The device can be used for recovering the HCN in various cyanogen-containing waste gases (such as carbon fiber tail gas, allyl cyanide tail gas, calcium carbide furnace gas, coke oven gas and yellow phosphorus tail gas).

The invention discloses an ecological water body purification system based on a nano-coupling material. The ecological water body purification system comprises an exogenous interception unit, an endogenous control unit, an artificial purification unit and an ecological restoration unit, wherein the exogenous intercepting unit comprises an ecological intercepting ditch and a slope protection ecological intercepting belt which are respectively positioned on two sides of a river channel; the ecological intercepting ditch comprises a plurality of intercepting ditches and intercepting pools communicating with the intercepting ditches, gravel and a water treatment slow-release agent are laid on the bottom walls of the intercepting ditches, and porous ceramic particles are laid on the bottom walls of the intercepting pools; the slope protection ecological interception belt comprises a plurality of moisture absorption ecological bags stacked layer by layer along a slope surface, and moisture absorption materials are contained in the moisture absorption ecological bags; the artificial purification unit comprises an air supply device and an aeration device; the air supply device comprises afan and a pipeline; and the aeration device comprises a membrane frame and a hollow fiber membrane assembly fixed on the membrane frame, the membrane frame is of a hollow structure, one end of the membrane frame is connected with a pipeline, and the membrane frame is used for conveying gas to the hollow fiber membrane assembly. According to the system, a complete ecological chain is constructed, river water self-purification capacity is enhanced, and water purification effect is stabilized.

The invention discloses a soluble metal salt recovery and wastewater purification device and a method thereof. The device comprises an anode chamber, a first fresh water tank, a concentrated water tank, a second fresh water tank and a cathode chamber. Each compartment is separated by ion selective permeation walls. Voltages are added at two ends of the device. Influent water first passes through the first fresh water tank, then passes through the second fresh water tank, and finally purified effluent water can be obtained. Under the effect of electromigration, negative and positive ions migrate towards the positive ion and negative ion selective permeation walls, and are adsorbed and then penetrate into the concentrated water tank, inside which the concentrated solution can be used for ion recovery. The device of the invention can be used for pure water preparation, seawater desalination, mineral matter extraction from underground mineral water, boiler water softening, and also can be used for industrial wastewater treatment as well as recovery of useful ions in wastewater.

The invention discloses a surface decontamination system for moving and static contacts of a vacuum arc extinguish chamber, comprising a stretching cylinder, a stretching cylinder rod, a moving conducting rod, a lift cylinder, a lift cylinder rod, a fixed contact rod electrode sleeve, a first electrode terminal and a second electrode terminal, wherein the stretching cylinder is connected with the stretching cylinder rod, the stretching cylinder is operated to drive the stretching cylinder rod to vertically lift, the upper end of the stretching cylinder rod is connected with the moving conducting rod; the lift cylinder is connected with the lower end of the lift cylinder rod and drives the lift cylinder rod to vertically lift, the lift cylinder rod is connected with the fixed contact rod electrode sleeve and drives the fixed contact rod electrode sleeve to move up and down; and one pole of a direct current arc welder power supply is connected with the first electrode terminal, the other pole is connected with the second electrode terminal, the first electrode terminal is connected with the moving conducting rod, and the second electrode terminal is connected with the fixed contact rod electrode sleeve. The invention realizes the advantages of high decontamination efficiency, uniform decontamination of surface ablation of the moving and static contacts of a vacuum switching tube and good consistency.