1464results about How to "Great operating flexibility" patented technology

A process for preparing low-carbon olefin from methanol or dimethyl ether includes loading its raw material and silicon aluminium phosphate (SAPO34) molecular sieve as catalyst into gas-solid parallel down-flowing fluidized bed reactor, super-short contact, reaction, fast gas-solid separation to separating resultant from catalyst to prevent secondary reaction, and regerating catalyst for cyclic use. Its advantages include high output rate (93%), high conversion rate of raw material, and less by-product.

The invention discloses a new fluidized bed hydrogenation reactor. The fluidized bed hydrogenation reactor of the invention comprises a cylinder-shaped reactor shell perpendicular to the ground, a three-phase separator arranged at the upper part in the reactor shell and a guiding structure arranged at the middle upper part of the reactor. The guiding structure is an annular convex structure arranged on the inner wall of the reactor and has the lengthwise section of a trapezoid or an arc along the axle of the reactor. The combination of the guiding structure and the three-phase separator increases the operating flexibility of the three-phase separator, and ensures the high-efficiency separation on the three-phase separator, thereby greatly reducing the carrying amount of catalyst. The fluidized bed hydrogenation reactor of the invention can be applied to the chemical reactions between different liquids or gases and solid grains under the condition of contacting, and is characterized by large catalyst inventory, high reactor utility ratio, etc.

A system and method for road surface defects detection based on infrared imaging technology, while the system comprising: a detection vehicle traveling on a detected road surface; a pan and tilt provided on the detection vehicle and rotate horizontally and vertically with respect to the detection vehicle; an infrared camera detachably set on the pan and tilt, which is used to capture infrared thermal images of the detected road surface, and to output inferred thermal image digital signals about the inferred thermal images including temperature values of the detected road surface; a main controller provided on the detection vehicle and connected to the pan and tilt and the infrared camera respectively, which is used to control capture actions of the infrared camera, to control angles of the horizontal and vertical rotations of the pan and tilt, and to transform the infrared thermal image digital signals output from the infrared camera into digital signals to be used in standard network transmission; and a data processor, used to receive the digital infrared signals to be analyzed and processed to determine the type and location of defects on the detected road surface. The system of the present application has excellent operation flexibility and is able to visually display details of the defects.

A process for cleaning the waste gas containing high-concentration NOx includes such steps as gathering the fume, coming in rotary filler bed, diffusing into rotary filler, spraying the absorptive liquid to filler, countercurrent absorption, mixing the treated gas with oxidant to oxidize NO to NO2, coming in rotary filler bed, absorbing by absorptive liquid, defrosting, and exhausting. Said absorptive liquid can be cyclically used. Its apparatus is also disclosed.

An electronic control and display unit includes a display and at least one control unit. The display has a set of visualization regions and can be operated in navigation levels. The display is subdivided into visualization regions within a navigation level and at least a portion of the visualization regions are movable relative to others of the visualization regions.

The invention discloses a distillate oil two-phase hydroprocessing method, which comprises the following steps of: performing hydrogen saturation on raw materials, hydrogen and circulating hydroprocessing products in a pre-saturation high-pressure tank to form a two liquid-phase mixture of the raw materials, the hydroprocessing products and the hydrogen; separating the hydrogen from the liquid-phase mixture; and putting the mixture with saturated dissolved hydrogen in a single-stage or multi-stage inner cross-flow reactor under the condition of a hydrogenation process. The inner cross-flow reactor adopted by the invention has the functions of catalyzing the hydrogenation reaction and steam stripping the reaction side products such as H2S, NH3 and the like from a reaction system, so the hydrogenation reaction efficiency is greatly enhanced. At the same time, the method does not need a hydrogen circulating link and a circulating hydrogen compressor so as to greatly reduce the equipment investment and the operation cost. The method not only can be applied to hydrogen desulfurization, denitrification and dearomatization for the distillate oil such as gasoline, kerosene, diesel oil and the like, but also can be applied to the technical process for producing high-quality clean fuels by mild hydrocracking the distillate oil such as a VGO raw material.

The invention discloses a staged-pressurization gasification reaction device for dry pulverized coal. A first burner chamber internally provided with a top-arranged process burner is arranged at the top part of the gasification reaction device; a layer of second burner chamber internally provided with a side-surface process burner is arranged on the side surface at the upper part of the gasification reaction device and along the peripheral direction; a slag hole is also arranged in the bottom of the gasification reaction device; multiple chilling gas inlets are arranged at the upper end part of a synthesis gas cooling chamber; and further, the synthesis gas cooling chamber is also provided with an inner cylinder membrane wall, an outer cylinder membrane wall and a screen wall. The invention further discloses a gasification method, which includes steps as follows: S1, gasified fuel, water vapor and oxygen are sprayed into the gasification reaction chamber for incomplete gasification reaction; S2, oxygen or oxygen rich gas and water vapor are injected into the side surface process burner so as to carry out complete gasification reaction and secondary gasification reaction; S3, gasified products enter the synthesis gas cooling chamber from the slag hole; and S4, synthesis gas is discharged from the synthesis gas cooling chamber, and ash residues are discharged into a bottom slag basin. According to the invention, the service life of the furnace liner is prolonged, and the practical operation flexibility is enhanced.

The invention relates to a coal tar full-fraction hydrogenation method for coupling a slurry bed and a static bed. The coal tar full-fraction hydrogenation method mainly comprises a coal tar material pretreatment unit, a slurry bed hydrocracking unit, a primary hydrogenation product fractionation unit, a static bed hydrorefining unit, and a product distilling unit, wherein the coal tar full-fraction oil is subjected to pretreatment such as dewatering and dedusting, and enters a slurry bed reactor to carry out hydrocracking reaction after being mixed and pre-heated together with a hydrocracking catalyst; the reacted primary hydrogenation product enters the static bed hydrorefining unit through a light component obtained by fractionation; the middle fraction and the catalyst return to a slurry bed hydrogenation reactor in a circulating manner; a light component returns to a tar pretreatment unit to hydrogenate in circulation after removing a part of catalyst and coke generated in a cracking manner, and the light component is rectified to obtain naphtha and diesel oil product after common hydrorefining. The method is coal tar full-fraction hydrogenation; the utilization rate of the coal tar is improved to the maximal extent; and the coking of the heavy component of the coal tar and inactivation of the catalyst are effectively delayed by the process for coupling the slurry bed and the static bed, and the production cycle is also prolonged.

The invention relates to a method for directly liquefying coals with a function of maximizing utilization of liquefied residues. The method comprises the following technical steps: preparing coal paste; carrying out hydrotreating and liquefaction on the coal paste; carrying out oil separation treatment on the obtained oil product; carrying out upgrading and hydrotreating on the obtained product; carrying out hot extraction on the residues and then carrying out solid-liquid separation on the residues; and recovering the solvent; and carrying out hydrotreating treatment on the mixture of heavy oils and asphalt materials so as to obtain the final product, then taking the heavy oils as recycled solvent to prepare the coal paste, and the like. The method provided by the invention has the advantages that because of organically combining the liquefaction process and the residue extraction, the utilization of liquefied residues is maximized, the conversion rate of coal is improved, the yieldsof light and middle oils subjected to coal liquefaction are improved by 10 to 60 percent, and the quality of oil is improved, thereby greatly enhancing the economic benefits of direct coal liquefaction plants and improving environment protection; and the method provided by the invention has important economic and social significances, and can widely be applied to the field of coal direct liquefaction.

The invention discloses a technological process for continuously producing succinic anhydride and co-producing succinic acid through maleic anhydride catalytic hydrogenation. The whole process comprises three steps, namely, reaction, rectification and hydrolysis, wherein two stages of hydrogenation reactors are used for reaction, a primary hydrogenation reactor is a fixed bed reactor with hydrogen entering from the lower part and reaction liquid exiting from the upper part, and a secondary hydrogenation reactor is a trickle bed reactor with hydrogen and reaction liquid entering from the upper part and exiting from the lower part. The technological process adopts an external circulating heat radiation manner, and reaction heat is uniformly removed, so that the average operation temperature of the whole reactor is effectively controlled, and the reaction temperature in the whole main reactor is balanced. Furthermore, the primary hydrogenation reactor adopts the manner that both the maleic anhydride solution and hydrogen flow upward simultaneously, so that the reaction temperature of the whole reactor is controlled to be balanced, local hot spot temperature is effectively controlled and lowered, and the reactants are prevented from polymerizing and depositing carbon or coking.

The present invention relates to apparatus for influencing fluid flow over a surface, and more particularly, but not exclusively, to turbulent boundary layer flow drag reduction for an aircraft. The present invention provides such apparatus including a plasma generator comprising first and second spaced-apart independently controllable electrodes operable to cause a change in direction of the flow of the fluid over the surface.

The invention discloses a method and a device for efficient utilization of pressure energy of a natural gas pipeline network. The method of the invention comprises natural gas pressure energy refrigeration and cold energy utilization. The method comprises the following steps of: exchanging heat between a normal-temperature liquid refrigerant from a third refrigerant storage tank and a low-temperature gaseous refrigerant from a refrigeration storage, reducing the temperature to between 17 and 22 DEG C, reducing the pressure to 0.1MPa through a pressure regulating valve, and delivering the liquid refrigerant into the refrigeration storage at the temperature of 32 DEG C below zero; meanwhile, reducing the pressure of a refrigerant of a second refrigerant storage tank to 0.1MPa through the pressure regulating valve, and delivering the refrigerant into the refrigeration storage at the temperature of 32 DEG C below zero; raising the temperature of the low-temperature gaseous refrigerant after exchanging the heat with the normal-temperature liquid refrigerant to 0 DEG C, then exchanging heat between the low-temperature gaseous refrigerant and circulating water to reduce the temperature of the circulating water and raise the temperature of the low-temperature gaseous refrigerant to between 10 and 15 DEG C, and returning the low-temperature gaseous refrigerant to a first refrigerant storage tank for recycle and later use. The method and the device can remarkably improve the utilization rate of the pressure energy of the pipeline network, and have great economic benefit and broad development space.

The invention relates to a method for producing clean diesel by full liquid phase hydrogenation. The method comprises the following steps that: raw materials, hydrogen and a circulating liquid hydrogenated product are subjected to hydrogen saturation in a pipeline to form a liquid-phase raw material/hydrogenated product/hydrogen mixture; under a hydrogenation process condition, the liquid-phase mixture with saturated dissolved hydrogen sectionally enters a multi-stage conventional hydrogenation reactor. According to the present invention, with the hydrogenation reactor, the hydrogenation reaction is catalyzing, the reaction by products such as H2S and NH3 are discharged out of the reaction system; the materials contacting the solid-phase catalyst are the liquid-phase reaction materials so as to improve the hydrogenation reaction efficiency; the method does not require the hydrogen circulating so as to substantially reduce the equipment investment and the operation cost; the method provided by the present invention can be used in hydrogenation, desulfurization, denitrogenation and dearomatization refinement for poor-quality diesel fuel fractions, and can be applicable for the technical process for producing high-quality clean diesel by using the fraction oil such as VGO raw material mild hydrocracking.

The invention relates to a method for producing asphalt blending oil by normal pressure distillation of catalytic slurry oil. The method comprises the steps of: adding a certain amount of additives, such as a steam partial pressure regulator and an oxidant and the like, into catalytic cracking slurry oil as a raw material, pumping the material into a heat exchanger by an oil pump for preheating; after the material is preheated, conveying the material into a heating furnace for heating to be 360-420 DEG C, and conveying the material into a distillation tower for separating; obtaining a mixture of top light oil and the steam partial pressure regulator at the top of the tower, and if the steam partial pressure regulator is not soluble in the light oil, standing and separating to obtain the light oil; distilling off wax oil from a middle outlet of the tower; obtaining high boiling point heavy oil, as the asphalt blending oil, containing small amounts of catalyst microparticles at the bottom of the tower; and if high boiling point heavy oil not containing powders is needed, removing residual microparticles by a high temperature filter to obtain cleaner high boiling point heavy oil.