31results about How to "Realize continuous regeneration" patented technology

The invention discloses a reaction technology for converting an oxygen-containing compound into aromatic hydrocarbons by using a moving bed process. The technology comprises the following steps: preheating the oxygen-containing compound and a diluent, carrying out mixing preheating, reacting in the presence of an aromatization catalyst in an aromatization reactor in order to generate a mixed effluent, sending the mixed effluent to a cooling separation unit, carrying out dehydration and oxide removal, separating to obtain main products comprising benzene, toluene, xylene and other byproducts; circulating the other byproducts, benzene and toluene to the aromatization reactor as return hydrocarbons for a reaction; removing carbon-deposited aromatization catalyst particles from the aromatization reactor when the conversion rate of the oxygen-containing compound under the catalyst in the aromatization reactor is lower than 99%, regenerating in a regenerator, and adding the regenerated catalyst to the aromatization reactor. The technology improves the stability and the activity of the catalyst, and improves the selectivity of the aromatic hydrocarbons especially xylene through recycling product hydrocarbons.

The invention relates to a catalyst for purifying tail gas of diesel automobiles, a preparation method and a purification device thereof. The catalyst comprises a first carrier taking cordierite honeycomb ceramics as a matrix, and a second carrier taking SiC or a cordierite wall-flow structure as a matrix, a first coating and active components on the first carrier, as well as a second coating and active components on the second carrier. In the invention, coating, roasting and reduction processes are adopted for preparing the coatings composed of composite oxides. The catalyst and the device in the invention employ a technology combining a DOC (diesel oxidation converter) and a CDPF (catalyzed diesel particulate filter). By means of the DOC at a front end, HC, CO as well as the soluble organic fractions (SOF) in PM are removed through oxidation. Meanwhile, NO is converted to NO2 that has stronger reducibility so as to be good for the reaction of NO2 and C, thus reaching the purposes of removing NO and lowering the combustion temperature of C simultaneously. Depending on the self-temperatures of diesel automobiles to realize regeneration of a particulate filter, the purification device in the invention has the characteristics of high purification efficiency and convenient usage, etc.

The invention discloses a method for treating fluorine-containing reuse water. The method comprises the following specific steps: (1) pretreatment; (2) flocculation precipitation; (3) filtration-reverse osmosis membrane filtration; (4) total organic carbon (TOC) degradation and ultraviolet sterilization; (5) electrodeionization (EDI) treatment; (6) TOC degradation and ultraviolet sterilization; and (7) precise filtration. The invention has the advantages that water quality of an effluent can reach a standard of ultra-pure water, fluorine removal efficiency is high, the recycling rate of wastewater is high, and operation cost is low.

The invention belongs to the technical field of thermochemical hydrogen production, and particularly relates to a thermochemical hydrogen production system based on microwave heating and a hydrogen production method and application thereof. A hydrogen production device is characterized in that an inlet of a preheater is communicated with a carrier gas storage device, a flow controller is arrangedbetween the preheater and the carrier gas storage device, an outlet of the preheater is respectively communicated with an inlet of the steam generator and one end of a second three-way valve through afirst three-way valve, the other two ports of the second three-way valve are respectively communicated with an outlet of a superheater and an inlet of the reactor, the reactor is arranged in a microwave generation device, an outlet of the steam generator is communicated with the outlet of the superheater through a pipeline, an outlet of the reactor, a condenser, a drying device and a collecting device are sequentially communicated, and a chromatographic instrument is arranged on the communicating pipeline between the drying device and the collecting device. The microwave pyrolysis of the metal oxide is short in heating time, low in power consumption and low in experiment cost, the repeated experiment period is shortened, and the effective energy utilization rate is greatly improved.

The invention relates to an adsorption desulfurizing method for catalytic cracking gasoline. The method comprises the following steps: S201, carrying out an adsorption desulfurizing reaction between the catalytic cracking gasoline and an adsorption desulfurizing agent under a hydrogen present condition, and obtaining a desulfurization product and an inactivated desulfurizing agent; S202, separating and purifying the adsorption desulfurizing product, thereby obtaining gasoline components with the sulfur content of less than or equal to 10<mu>g.g<-1>. With the adoption of the method provided by the invention, hydrogenation saturation of olefins can be effectively reduced while realizing ultra-deep reaction adsorption desulfurization of high-sulfur inferior catalytic cracking gasoline, and chemical hydrogen consumption and octane loss are reduced. Moreover, the adsorption desulfurizing agent provided by the invention has the advantages of high sulfur capacity, low wear rate, low adsorption reaction temperature, capability of obviously reducing operating cost and the like. Meanwhile, the adsorption desulfurizing agent provided by the invention can realize continuous regeneration on line, so that the defect that the running period of the adsorption desulfurizing agent is low due to inactivation is overcome.

The invention relates to a coating method of a catalyst and a carbon smoke particle filter prepared with the same and belongs to the technical field of air purification. The coating method includes the steps of: 1) activation of a metal based carrier: activating the metal based carrier at 500-1000 DEG C for 5-10 h; 2) preparation of a coating solution: weighing a catalyst source and carbon according to the weight part ratio of 1-10:1, placing the components in deionized water, and stirring the solution uniformly, wherein the catalyst source is a compound containing a catalytic metal element; 3) coating of the metal based carrier: coating the surface of the metal based carrier with the catalyst source and the carbon in the coating solution in a deposition manner; and 4) chemical deposition: roasting the metal based carrier coated with the coating solution at 550-1100 DEG C for 4-12 h, and cooling the catalyst. The coating method can effectively deposit the active catalyst components on the surface of the carrier to form a stable compound, thereby improving adhesion force of the catalyst on the carrier.

The invention provides a preparation method of a visible light micro-nano reactor membrane for selective removal of ammonia nitrogen. The method includes: taking calcium silicoaluminate hydrate, graphite-phase carbon nitride, an ammonium ion sieve material, polytetrafluoroethylene and dimethylacetamide as the main raw materials to obtain a mixed feed liquid, coating the obtained mixed feed liquidon a flat plate, and transferring dimethylacetamide into water, taking the flat plate out and performing drying to obtain the visible light micro-nano reactor membrane. By means of the ammonium ion sieve material, the visible light micro-nano reactor membrane provided by the invention can effectively realize selective exchange of ammonium ions from water, and through cooperation with a chloride ion adsorbent and a visible-light-induced photocatalyst, continuous regeneration of the ammonium ion sieve can be realized, continuous operation and stable water outflow of the membrane can be effectively realized, and the technical problems of low selectivity of conventional ion exchanger, difficult treatment of regenerated liquid, high regeneration cost, and difficult realization of in-situ real-time regeneration are solved.

The invention provides a method for producing aromatic hydrocarbon from methanol, which comprises the following steps: 1) carrying out a first reaction on methanol in the presence of a catalyst to produce a first product; then adding a diluent to carry out a second reaction to obtain a second product; and 2) carrying out separation treatment on the second product to obtain the aromatic hydrocarbon, wherein the first product comprises dimethyl ether. According to the method, methanol is firstly converted into dimethyl ether, and then the aromatic hydrocarbon is further prepared from the reactant containing dimethyl ether, so that the heat in the whole reaction process is more controllable. By means of the method, the problem that the aromatization reaction is difficult to carry out normallydue to the fact that a large amount of heat is generated during the direct aromatization reaction of methanol is avoided.

The invention discloses an electric regenerative system for measuring conductivity of water vapor hydrogen. The system comprises a power supply device, an electric regeneration cation exchange device connected with the power supply device, a conductivity measuring device, and a water sample cutoff detection device. In a power supply state of the power supply device, a to-be-detected water sample flowing in from a water sample inlet replaces cations in the electric regeneration cation exchange device, the to-be-detected water sample enters a conductivity cell through a water sample outlet and is subjected to conductivity measurement by a conductivity meter, and the water sample flowing out of the conductivity cell enters the regeneration cation exchange device again through the regeneration inlet to be electrolyzed; hydrogen ions are generated; the resin in the regeneration cation exchange device is regenerated through the generated hydrogen ions, and finally, the water sample is discharged through a regeneration outlet. Under the condition, the accuracy of measuring the conductivity of the hydrogen in the water vapor can be improved, the method has important significance for realizing complete continuous monitoring, and the field labor cost and the equipment maintenance cost can be saved.

A network apparatus which enables continuous reproduction of image information without a necessity of a high performance CPU and a large capacity memory in mobile terminals, comprises: an Internet interface means 5 for establishing an interface with the Internet 1, a mobile interface means 7 for establishing an interface with a mobile network 4, a protocol processing means 6 for applying a protocol process to information which are processed by the Internet interface means and the mobile interface means, an image information edit processing means 8 for editing image information which are extracted by the protocol processing means into image information suitable for a mobile communication, a storage unit 10 for storing the image information which are edited by the image information edit processing means, and a storage unit controlling means 9 for controlling to store/read the image information into/from the storage unit.

The invention discloses a diesel engine exhaust aftertreatment device. The diesel engine exhaust aftertreatment device comprises an insulating cylinder, a plasma discharging body, a porous disc, an external insulator and a catalyst carrier which are arranged in a left sleeve to form a plasma auxiliary catalytic conversion purification device, and further comprises a diesel engine exhaust particulate matter catcher arranged in a right sleeve, wherein the left sleeve and the right sleeve are connected through a flange, an outlet of the plasma auxiliary catalytic conversion purification device is in butt joint with an inlet of the particulate matter catcher, an air inlet is formed in the left end of the left sleeve, and an exhaust port is formed in the right end of the right sleeve. The diesel engine exhaust aftertreatment device has the beneficial technical effects that emission of carbon monoxide, hydrocarbon, nitric oxide and particulate matter in diesel engine exhaust is reduced, continuous regeneration of the particulate matter catcher is achieved, and the size of an aftertreatment device system is reduced.