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42results about How to "Consistent activity" patented technology

Method for producing one-dipping two-baking anode carbon block

The invention discloses a method for producing one impregnating two calcining anode carbon blocks, which is on the basis of producing common anode carbon blocks and comprises following steps: selectively using calcined coke, adding a little antioxidant additive, preheating a common anode under the temperature of 280-330DEG C for 18-24 hours, then, hoisting in a high pressure impregnation tank, filling impregnating pitch whose temperature is 160-180DEG C under the vacuum pressure of 0.09-0.094MPa, pressurizing 1.55-1.6MPa, maintaining the pressure for 3-5 hours, hoisting out and cooling to normal temperature, then, calcining for 200-220 hours under the temperature condition that the maximum temperature is 800-900DEG C according to a heating curve, cooling, and then cleaning up to obtain a new one impregnating two calcining anode carbon block. Since the pitch is filled in an air vent of the anode, the mechanicalness and the physical and chemical properties of the anode carbon blocks are newly changed, the bulk density and the compressive strength are increased, the porosity is lowered, the resistivity is lowered, the activity of the binder coke and the activity of aggregate tend to be consistent, the speed of selective oxidation is lowered, the voltage drop of the anode carbon blocks is lowered, and the using period of the anode is prolonged.
Owner:WEN COUNTY DONGFANG CARBON

Program-controlled pig bionic digestion system and method using program-controlled pig bionic digestion system to quickly determining digestible energy value of pig feed

The invention discloses a program-controlled pig bionic digestion system and a method using the program-controlled pig bionic digestion system to quickly determining a digestible energy value of pig feed. The method comprises the following steps that a feed sample is pulverized and sieved through a standard sieve; a gastric buffer solution and an intestinal buffer solution are prepared; simulatedgastric juice, simulated small intestinal juice and simulated large intestinal juice are prepared; the pulverized feed sample is filled into a simulated digester of the program-controlled pig bionic digestion system, and the simulated gastric juice is added in sequence through computer program control to simulate gastric digestion; after the intestinal buffer solution is added, the simulated smallintestinal juice is added to simulate small intestinal digestion; the simulated large intestinal juice is added to simulate large intestinal digestion; inactivation is carried out after the digestionis completed; and then cleaning is carried out, after undigested residues are obtained, a total energy value of the residues and the feed sample is tested, and the digestible energy value of the feedis calculated. The method is simple, high in precision, low in implementation cost, and the digestible energy value of the pig feed can be accurately determined within 72 hours.
Owner:INST OF ANIMAL SCI OF CHINESE ACAD OF AGRI SCI

Catalyst regeneration method and regenerator

InactiveCN104415798ASame burn timeConsistent carbon contentCatalyst regeneration/reactivationPetrochemicalEngineering
The invention provides a catalyst regeneration method, belonging to the technical field of petrochemical engineering and fluidization and aiming to improve the burning efficiency of a fluidized bed regenerator. The catalyst regeneration method comprises spent catalyst feeding, main air feeding, fluidized bed burning and regenerating agent discharging, and is characterized in that a turbulent flow bed is in reverse contact to be burnt; a spent catalyst passes through the distributor to enter from the upper part of a fluidized bed and is distributed; a regenerating agent is led out from the central position of the lower part of the fluidized bed; and heating is set so that the temperature of the regenerating agent is lowered and the agent-oil ratio of the device is improved. According to the method, the burning time of the spent catalyst in the fluidized bed can be consistent, the carbon content of the regenerating agent is consistent, the activity of the regenerating agent is consistent, the temperature of the regenerating agent is lowered and the agent-oil ratio of the device is improved. The invention further provides regenerator which can be used for realizing the method and is composed of a central leading-out pipe, a regenerating agent conveying pipe, a spent catalyst feeding pipe and a spent catalyst lifting pipe. The catalyst regeneration method is applied to catalytic cracking and methanol-to-olefin device regenerators.
Owner:刘英聚
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