34results about How to "Continuous regeneration" patented technology

An improved continuous process for converting methane, natural gas, or other hydrocarbon feedstocks into one or more higher hydrocarbons or olefins by continuously cycling through the steps of alkane halogenation, product formation (carbon-carbon coupling), product separation, and regeneration of halogen is provided. Preferably, the halogen is continually recovered by reacting hydrobromic acid with air or oxygen. The invention provides an efficient route to aromatic compounds, aliphatic compounds, mixtures of aliphatic and aromatic compounds, olefins, gasoline grade materials, and other useful products.

In a first embodiment, a dynamic computer system security method and system using dynamic encryption and full synchronization between system nodes. A data record created by a source user is encrypted with an initial dynamic session key. A new dynamic session key is generated based upon a data record and a previous dynamic session key. A central authority is used to synchronize and authenticate both source and destination users with constantly regenerated dynamic authentication keys. In a second embodiment, a method of providing dynamic security authentication between wireless communication network nodes. An initial authentication key and an address are assigned to certain of the nodes. The address along with information encrypted by the initial authentication key is sent to an authentication server. The authentication server and node or nodes synchronously regenerate authentication keys based upon the initial authentication key. Secure handovers occur between nodes via an authentication key.

This particulate matter reducing apparatus 10 is provided to burn and reduce particulate matter (“PM”) in an exhaust gas 1 of a diesel engine while collecting the PM on each filter 11 at a low collection rate of 50% or less in total. The filter 11 is composed of a wire mesh structure and is formed in a short column shape provided with a central through hole 12. The filter 11 is coaxially housed in an outer cylindrical casing 4 with a gap 14 provided within the casing and is retained by a pair of front and rear shielding plates 17 and 18. The pair of shielding plates 17 and 18 divides the inside of the outer cylindrical casing 4 in front and rear and is provided with one or more air holes 15 and 16 at the outer circumferential section or at the central section.

A honeycomb filter 1 of the present invention includes a honeycomb structure 2 having partition walls 7 and plugging portions, and the partition walls 7 are constituted of a porous layer in which a first wall portion 7a having an average pore diameter of 20 μm or more and carrying an oxidation catalyst 11 on the inner surfaces of formed pores 8, a second wall portion 7b functioning as a buffer and having a high porosity, and a third wall portion 7c having an average pore diameter of 1 to 15 μm and a porosity of 50 to 90% are laminated in the thickness direction of the partition walls 7 from a surface side where cells 9a having opening end portions opened on an inflow side and opening end portions plugged on an outflow side are defined.

A method of drying liquid and gaseous hydrocarbons by contacting a feed stream of the hydrocarbon with an aqueous solution of a salt drying agent prior to passing the stream through a salt dryer to remove part of the water in the stream. The aqueous solution of the salt drying agent is generated in the salt dryer when the partly dried stream comes into contact with the drying salt and forms the solution. The solution is circulated in a loop from the salt dryer to the incoming feed and then through a liquid/liquid coalescer which removes a portion of the water together with dissolved salt from the mixture before the mixture is passed on to the salt dryer where further removal of water occurs. The salt dryer is off-loaded by a substantial factor by the initial partial dehydration and does not require to remove such a large amount of water; the salt consumption is therefore reduced in proportion to the amount of water removed in the treatment steps which precede the dryer.

The present invention relates to a method for deamination and denitrification of residential quarter sewage, belonging to the field of sewage treatment technology. It is characterized by that after the sewage is passed through anaerobic filter tank, contact oxidation tank and precipitation tank to obtain treatment, then sewage can upwards flow and be fed into two parallel modified zeolite adsorption regeneration columns to implement ammonia and nitrogen adsorption at twice successively, so that said invention can obtain high ammonia and nitrogen treatment efficiency. Said invention also provides the regeneration method of the above-mentioned zeolite adsorption regeneration column by using backflush process.

The invention relates to an air cleaner, and more particularly to an air cleaner which includes a regenerative deodorizing filter to purify and treat gaseous substances contained in air, thus enabling efficient regeneration of the regenerative deodorizing filter, and a method of regenerating the filter of the air cleaner.

An exhaust gas system for purifying exhaust gases of an internal combustion engine, particularly a diesel engine in a motor vehicle, conducts the exhaust gas in a specific flow direction. A catalytic converter, particularly for converting hydrocarbons and carbon monoxides contained in the exhaust gas, an oxidation catalytic converter, particularly for converting nitrogen monoxide contained in the exhaust gas and a particulate trap for collecting particulates contained in the exhaust gas, are disposed successively in the flow direction. The exhaust gas system ensures a highly efficient conversion of harmful substances contained in the exhaust gas, and a particularly positive effect with respect to the regeneration of the particulate trap also occurs.

The invention relates to an exhaust-gas secondary treatment system (1) for an internal combustion engine (2) of a vehicle (3) having at least one exhaust pipe (4) and at least one turbocharger (5) and at least one exhaust converter (6), wherein the catalytic converter (6) is provided between the internal combustion engine (3) and the minimum of one turbocharger (5) that has an initial volume (7) of at least 0.6 liters.

The present invention describes a fluid which is suitable for the decontamination of heat engines which can carry out, at the same time, both the catalytic reduction of oxides of nitrogen (NOx) contained in exhaust gases and assist in the regeneration of the particulate filter (PF). The invention also describes several embodiments of said fluid consisting of producing an oil-in-water type emulsion.

The invention relates to a system and a method for separating an oil product by using a deep eutectic solvent in the field of separation of polycyclic aromatic hydrocarbons in petroleum or petroleum fractions. The system for separating the oil product by the deep eutectic solvent comprises the following units: a non-aromatic removal tower A, an aromatic hydrocarbon separation tower B, a monocyclic aromatic hydrocarbon separation tower C and a polycyclic aromatic hydrocarbon separation tower D; the system can separate an oil product into three major components, namely non-aromatic hydrocarbon, monocyclic aromatic hydrocarbon and polycyclic aromatic hydrocarbon. Moreover, the system can also comprise a regeneration tower E and a regeneration tower F of the deep eutectic solvent of the extraction agent, and continuous separation and regeneration of the extraction agent can also be realized.

The invention relates to the field of pharmaceutical chemical industry, and particularly discloses a synthetic method of a pharmaceutical intermediate pyrano [2, 3-d] [1, 3] thiazolo [3, 2-a] pyrimidine derivative, which comprises the following steps: in a catalytic system consisting of a basic ionic liquid catalyst and a mixed solvent, taking aldehyde, malononitrile and 7-hydroxy-2, 3-dihydro-5H-[1, 3] thiazolo [3, 2-a] pyrimidine-5-ketone as raw materials, and reacting at the temperature of 60-80 DEG C to obtain the pyrano [2, 3-d] [1, 3] thiazolo [3, 2-a] pyrimidine derivative. And reacting at the temperature of between 35 and 50 DEG C for 4 to 8 minutes, and preparing to obtain the pyrano [2, 3-d] [1, 3] thiazolo [3, 2-a] pyrimidine derivative medical intermediate. According to the synthesis method, through selection of a plurality of elements such as catalyst, reaction solvent and catalytic system regeneration, the target product can be obtained at high yield, and the synthesis method has good industrial large-scale use value in the technical field of medical intermediate synthesis.