51results about How to "Realize online regeneration" patented technology

The invention discloses an organic waste water disposing device through ozone or activated carbon, which comprises the following parts: outer cylinder, circulating cylinder with the same shaft of outer cylinder, inlet on the bottom of outer cylinder, aerating device on the bottom of inner cylinder. The disposing method comprises the following steps: pumping organic waste water in the device from inlet; putting grain-shaped activated carbon in the device; inputting ozone gas; circulating to flow the activated carbon in the space of inner cylinder and outer cylinder pushed by ozone gas.

The invention belongs to the technical field of environmental protection, and in particular relates to a waste rubber cracking gas purifying process and equipment thereof. In the invention, a method combining acid washing, alkaline washing and physical adsorption is adopted so that the gas sequentially passes through a condenser, an acid washing tower, an alkaline washing tower and a physical adsorption tower through a pipeline to be purified, and online regeneration of a filler is realized. Through the invention, the purifying efficiency is high, the filler can be recycled, and efficient continuous purification is realized.

The invention relates to a regeneration method of a cyclohexene hydration catalyst. The regeneration method includes steps that: molecular sieve catalyst water solution with activity reduced in a cyclohexene hydration reaction is subjected to gas stripping so as to remove entrained organics, the catalyst solution is subjected to oxidization for further oil removing, and the catalyst with oil removed is subjected to filtering for impurity removing and harmonious stabilizing. The activity of the catalyst obtained after the steps is restored in the maximum limit, and the catalyst is directly sent back to a hydration reaction system by a pump for cycle use. The regeneration method of the cyclohexene hydration catalyst enables the catalyst activity to restore to be above 95% of the initial activity, and achieves online regeneration of the catalyst when the catalyst is in the slurry state same as that in a reactor.

The invention belongs to the technical field of gas purification treatment, relating to a catalyst for removing low-concentration formaldehyde in gases and the application thereof. The catalyst is characterized by using at least two of Ag, Co, Fe and Cu as main active components which are loaded on an HZSM-5 type molecular sieve carrier and are 1-20 percent by weight of the catalyst. The catalyst is filled in a reactor and applied to two alternately operating stages, i.e. a storage stage and a regeneration stage, wherein the reactor can be inflated with ozone, can be used for heating at a controlled temperature and can carry out DBD (Dielectric Barrier Discharges). At the storage stage, low-concentration formaldehyde in the gases is firstly stored on the catalyst; and at the regeneration stage, ozone or oxygen-contained gas is introduced for heating or carrying out the DBD so that the formaldehyde stored on the catalyst is fully oxidized into carbon dioxide and water, wherein the oxygen content in the introduced oxygen-contained gas at the regeneration stage is 20-100 percent, and air can be directly used as the oxygen-contained gas at the regeneration stage. In the invention, the provided catalyst with the function of selective storing and catalytic oxidation on the formaldehyde has the advantages of low energy consumption and no secondary pollution, is extremely suitable for removing low-concentration formaldehyde in gases and is particularly suitable for removing formaldehyde pollutants in indoor air.

The invention discloses an SCR flue gas denitration device with various adjustment functions, comprising a denitration inlet flue having a plurality of sub-flues separated by flue partition boards, each sub-flue being provided with an independent flue baffle; a denitration reactor, arranged after the denitration inlet flue, provided with a plurality of layers of denitration catalysts, and having aplurality of parallel sub-zones separated by reactor partition boards, the number of the sub-zones being the same as the number of the sub-flues and the sub-zones correspondingly being connected to the sub-flues; an ammonia-spraying unit having a plurality of sub-ammonia-spraying units for respectively spraying ammonia to the plurality of sub-flues, the sub-ammonia-spraying units being located before the flue baffle; and a flue gas temperature regulation unit having a plurality of sub-air-distribution units for air distribution and temperature adjustment to the plurality of sub-flues, respectively, the sub-air-distribution units being located after the flue baffle. The inlet flue gas temperature of the denitration device provided by the invention can be flexibly adjusted, so as to realizeon-line regeneration and replacement of a catalyst and perform zoned adjustment and control on the denitration device.

The invention discloses a waste-gas denitration device. The waste-gas denitration device comprises a waste-gas absorption device and a waste-gas removing device. The waste-gas absorption device is a spraying tower or a bubble tower. The waste-gas removing device is an electrochemistry device which is of an integrated structure, and comprises negative poles, positive poles and a reaction channel; the negative poles are negative-pole three-dimensional electrodes, and the negative poles and the positive poles are arranged in scroll shapes; a water inlet channel is formed in one side of the electrochemistry device, a water outlet channel is formed in the other corresponding side of the electrochemistry device, a gas exhausting hole is formed in the upper portion of the electrochemistry device, electric fields are externally added on the negative poles and the positive poles, absorption liquid in the electrochemistry device is regenerated, and meanwhile nitrogen oxide in waste gas is reduced nitrogen. According to the waste-gas denitration device, nitrogen oxide in the waste gas is absorbed and removed through the absorption liquid, the absorption liquid can be efficiently regenerated, and is continuously cycled in a waste-gas denitration system, and the stable and efficient effect on removing NO in the waste gas is achieved; the high temperature, the mild reaction condition and the like are not required, cost is saved, the storage volume of the absorption liquid is reduced, the device space is saved, and zero pollution to the environment is achieved.

The invention relates to a method for preparing phenol-acetone through a movable bed reactor. The method mainly solves the problem that in the prior art, selectivity of phenol and acetone is low. According to the technical scheme, a CHP raw material (6) enters the top of the movable bed reactor (1) to make contact with a solid catalyst, a decomposition reaction is conducted, a large amount of heat is dissipated, liquid-phase acetone is evaporated into gas-phase acetone (7) to be discharged out of the top of the movable bed reactor (1), the discharged gas-phase acetone (7) is condensed into the liquid-phase acetone in a condenser (2) on the top of the reactor, the liquid-phase acetone is returned to the inner portion of the movable bed reactor (1), a reaction product (10) containing phenol and acetone is discharged out of the bottom of the movable bed reactor (1), and therefore the problems are solved, and the method can be used for preparing phenol-acetone.

The invention is suitable for the field of helium refrigeration, and discloses an online regeneration system. The online regeneration system comprises an adsorber bypass used for being connected with an adsorber in parallel, an adsorber gas inlet valve, an adsorber gas outlet valve, a regenerated gas inlet valve arranged between the adsorber and the adsorber gas outlet valve, a rewarming heater arranged between the adsorber gas inlet valve and the adsorber, a vacuum pump and a tail gas recovery device which are respectively connected with a gas outlet of the rewarming heater, a regenerated gas discharge valve, a tail gas recovery valve, a first pressure sensor which is used for measuring the internal pressure of the adsorber, a second pressure sensor is used for measuring the pressure at the inlet side of the vacuum pump; a first temperature sensor which is used for measuring the temperature of the adsorber, a second temperature sensor which is used for measuring the temperature of the tail gas at the outlet side of the rewarming heater; wherein the adsorber gas inlet valve, the adsorber gas outlet valve and the adsorber bypass are arranged in a cold box, and other parts are arranged outside the cold box, so that the number of equipment in the cold box and the complexity of a pipeline system are reduced.

The invention relates to an online-renewable biogas dry-process desulfurizing device which comprises a dry-type desulfurizing tower body, an online regeneration device and a PLC. The online regeneration device comprises an air incoming pipe communicated with a biogas incoming pipe and a plurality of electronic thermometers, the inlet end of the air incoming pipe is connected with an air compressor, an air flowmeter, an electric adjusting valve and an air one-way valve are sequentially arranged on the air incoming pipe, the electronic thermometers are arranged at different positions of a desulfurizing agent filling area, and a biogas flowmeter, a gas detector, the air flowmeter, the electric adjusting valve, the electronic thermometers and the air compressor are connected with the PLC. Thebiogas dry-process desulfurizing device realizes online regeneration of a ferric oxide desulfurizing agent therein, prolongs service life of the desulfurizing agent for 3-4 times, saves expense of thedesulfurizing agent, realizes automatic running, avoids safety risk caused by improper operation and adds a guarantee for biogas utilization.

The invention relates to a system and a method for preparing ethylene through acetylene hydrogenation. The system comprises a mixed pressure increasing unit, a catalyst protection unit, a hydrogenation reaction unit, a cryogenic separation unit, a vacuum filtration unit, a revolving bed generation unit and a vacuum low-pressure distillation unit. The method comprises steps as follows: acetylene and hydrogen are mixed under increased pressure; feed gases obtained after mixing are sequentially introduced into the catalyst protection unit and the hydrogenation reaction unit for a reaction; gaseous products obtained after the reaction are separated, a product ethylene, byproducts and surplus hydrogen are obtained, and the surplus hydrogen is sent to the reaction unit; slurry in a slurry reactor is led out and separated by the vacuum filtration unit, and a solid-phase material and a liquid-phase material are obtained; the solid-phase material is treated by the revolving bed generation unit, and a regenerated catalyst is obtained; the liquid-phase material is treated by the vacuum low-pressure distillation unit, and a solvent is recovered. The system and the method have the advantages as follows: operating flexibility is high, energy consumption of a compressor is low, the service life of the catalyst is long and the adaptive capacity is high.

The invention relates to a reaction system and method for preparing ethylene through regeneration of super gravity solvent. The system comprises a hydrogen and acetylene mixing equalizing unit, a hydrogen adding reaction unit, a deep cold separation unit, a vacuum filtering unit, a high-temperature steam and fluidized bed regenerating unit and a super gravity rectifying unit. The method includes the steps of mixing acetylene and hydrogen in an equalizing mode through the hydrogen and acetylene mixing equalizing unit, introducing mixed acetylene and hydrogen into the hydrogen adding reaction unit for reaction, conducting deep cold separation on gas-phase products obtained through acetylene and hydrogen reaction through the deep cold separation unit to obtain products, namely ethylene and abundant hydrogen, sending the abundant hydrogen into the hydrogen and acetylene mixing equalizing unit, leading out slurry in a slurry state bed, conducting separation through the vacuum filtering unit to obtain a solid-phase material and a liquid-phase material, processing the solid-phase material through the high-temperature steam and fluidizing bed regenerating unit to obtain a regeneration catalyst, and processing the liquid-phase material through the super gravity rectifying unit to recover solvent. The reaction system and method have the advantages of being large in operation elasticity and high in adaptability to catalyst.

The invention relates to a particle capturing system, and discloses a low-temperature plasma regeneration DPF system which comprises an air supply machine, a first air supply pipe, a first NTP generator, a DPF and an ultrasonic converter. The outlet of the air supply machine is connected with the inlet of a first NTP generator through the first air supply pipe. The ultrasonic converter is internally provided with a conversion channel and an ultrasonic generation module which generates and irradiates ultrasonic light to the conversion channel. The light generated by the ultrasonic generation module has the wavelength of 180-262 nm. The outlet of a first generation module is connected with the inlet of the conversion channel. A nozzle facing the downstream side is fixed to the inner wall ofa DPF upstream pipeline. The outlet of the conversion channel is communicated with the nozzle. NO is converted into NO2 in the ultrasonic conversion process with the sacrifice of O3, the concentrationof NO2 is increased, the amount of PM capable of being degraded by converted gas flow under the unit volume is increased, the regeneration efficiency of the DPF under the same flow velocity of the converted gas is improved, and the regeneration efficiency of the system is improved.

The invention provides a method for preparing methane-rich gas from synthesis gas. The method comprises steps as follows: purified synthesis gas and a first methanation catalyst are subjected to contact reaction in a first methanation reactor, and methanated feed gas is obtained; the methanated feed gas and a second methanation catalyst are subjected to the contact reaction in a second methanationreactor, and gas material flow I is obtained; the first methanation catalyst is led out from the first methanation reactor and divided into three parts; the gas material flow I is subjected to the contact reaction with a third-part catalyst and/or a regenerated first methanation catalyst in a third methanation reactor, and a methane-rich gas product is obtained. The methanation catalysts undertake the function of a heat carrier in a moving bed and can be regenerated and recycled online, and reaction heat is effectively recycled.

The invention relates to a ship off-gas treatment system with on-line regeneration and off-line ash removal. The ship off-gas treatment system comprises an inlet valve, a throttle valve, a combustiblegas and particulate matter treatment combined device, an outlet valve, a reducing agent metering and injection device, an SCR device, a compressed air valve and a filter; the inlet valve and the outlet valve are correspondingly arranged on an inlet main pipe and an outlet main pipe of the combustible gas and particulate matter treatment combined device; and the combustible gas and particulate matter treatment combined device is composed of a plurality of combined device units, an electric heater, a DOC catalyst and a DPF catalyst are sequentially installed on each combined device unit from bottom to top, a differential pressure transmitter is installed on each combined device unit body, and a temperature switch is installed at an outlet of each combined device unit. The ship off-gas treatment system has the beneficial effects that through the combustible gas and particulate matter treatment combine device, the compressed air valve and a particulate matter filter, the purposes of on-line regeneration and off-line ash removal are achieved, the gaseous and solid pollutants in the off-gas are removed, the energy consumption is low, and the regeneration is convenient.

The invention relates to the field of manufacturing of filtering equipment in coal chemical industry, and discloses a filter automatic backwashing equipment and a backwashing method thereof. The equipment comprises a filter body (1) with a filter element (2), the filter body is respectively connected with a pulse gas generator (5) and a backwashing pump (9), and the pulse gas generator inputs pulse gas into the filter body and forms pulse vortexes in the filter body; the backwashing pump is used for pumping the filtrate into the filter body to form backwashing liquid and soaking the filter element in the backwashing liquid for backwashing; and the filter body is provided with an output pipeline for discharging a gas-liquid mixture of the pulse gas and the backwashing liquid. According to the invention, under the condition that the top end cover of the filter is not disassembled and the filter element does not need to be taken out, the filtrate is directly used as the backwashing liquidto backwash the filter element in the filter body so that online regeneration of the filter system is realized; flushing time is short, operation is easy, cleaning is thorough, the service life of the filter element is prolonged, and equipment operation cost is reduced.

The invention belongs to a nuclear power station waste gas treatment technology, and particularly relates to a device for online vacuum drying and regeneration of activated carbon of a retention bed of a nuclear power unit. The device comprises a compressed air source for introducing compressed air, an electric heater for heating an output pipeline of the compressed air source, and a test retention bed, a refrigerated air dryer, a vacuum pump and an emptying retention bed which are sequentially connected with the heated output pipeline through valves. Under the condition that the retention bed activated carbon is not discharged, the adsorption performance of the activated carbon can be improved through an online vacuum drying regeneration technology and a zero emission mode, a new mode can be provided for retention bed activated carbon treatment, and an optimization reference is provided for subsequent design and operation of a nuclear power unit inert gas retention system.

The invention provides a method for producing methane. The method comprises steps as follows: methanation feed gas and a high-temperature methanation catalyst are subjected to a contacting reaction ina moving bed methanation reactor, and a gas flow I containing rich methane and the high-temperature methanation catalyst with reduced catalytic activity are obtained; the gas flow I and the methanation catalyst are subjected to a contacting reaction in a fixed bed methanation reactor, and a gas flow II containing rich methane is obtained; the high-temperature methanation catalyst with reduced catalytic activity is divided into three parts, the first part of the catalyst is sent into a regeneration reactor for regeneration treatment, and the regenerated high-temperature methanation catalyst issent into the moving bed methanation reactor to be recycled; the second part of the catalyst is discharged out of a reaction system as a waste catalyst; the third part of the catalyst is directly send into the moving bed methanation reactor to be recycled. The strict requirements for raw gas pretreatment procedures are effectively reduced, the pressure drop of the reactor is reduced, and energy consumption required for gas circulation is reduced.

The invention relates to a system for producing light aromatics from low-rank coal. The system includes a mixer, a briquetting machine, a rotary bed pyrolysis device, a calcium carbide furnace, an acetylene generator, an oil-gas separator, a purification device, and a reaction for producing aromatics from acetylene devices, separation systems, natural settlers, evaporative concentrators and mixing tanks. The invention also relates to a method of producing light aromatics using the system. The invention prepares aromatics from coal, solves the problem of limited output of aromatics due to limited petroleum resources, and realizes the conversion process from low-value low-rank coal to high value-added aromatics.