37results about How to "Reduce production operating costs" patented technology

The invention discloses a process for treating inferior heavy oil and residual oil comprising the following steps: loading heavy oil and petroleum residue into a solvent extraction apparatus, charging the obtained deasphalted oil into a fixed bed for hydrotreatment, entering the obtained tail oil into a catalytic cracking device, loading part or total slurry oil and de-oiled asphalt into a floating bed hydrogenation unit, separating the outcome yield to obtain lightweight fraction and untransformed tail oil, which is circulated to the solvent extraction device.

The invention relates to the technical field of catalysts, in particular to a hydrogenation catalyst, a preparation method and application thereof and a method for preparing succinic anhydride through maleic anhydride hydrogenation, the catalyst comprises a carrier and active components loaded on the carrier, the active components contain Ni elements, Cu elements and Ce elements, and the carrier contains SiO2; in the catalyst, on the basis of the total weight of the catalyst and in terms of oxide, the content of the Ni element is 10-40 wt%, the content of the Cu element is 1-5 wt%, the content of the Ce element is 1-8 wt%, and the content of the carrier is 47-88 wt%. The catalyst provided by the invention has excellent catalytic activity and succinic anhydride selectivity, is low in cost and simple in process, and can be applied to continuous large-scale production.

A water cleaning facility for building is composed of separating unit, water regulating unit, diffusing unit, cleaning unit and water collecting unit for drainging the reclaimed water. The septic tank, immersible pump, water supply pipe, sewage tank, diffusing pipe and roof region for planting are included.

The invention provides a coal fired chain grate hot-blast stove. The coal fired chain grate hot-blast stove comprises a combustion chamber, a chain grate and a heat exchanger. The hot-blast stove is a horizontal stove; a combustion fan is arranged below one fuel adding end of the chain grate; a deslagging machine is mounted below the other end of the chain grate; the heat exchanger is a tube type clean air heat exchanger; a tube pass of the heat exchanger is a clean air channel; a smoke outlet and a clean air outlet are formed in the stove wall of the same side of the hot-blast stove; the smoke outlet is sequentially connected with a cyclone dust collector, a water dust scrubber, a smoke guiding fan and a chimney through pipelines. The coal fired chain grate hot-blast stove is simple in structure and convenient to operate by workers, the combustion chamber temperature is easy to control, and temperature fluctuation of hot air generated by the clean air heat exchanger is stable.

The invention discloses a horizontal screw centrifuge. A spiral conveyor is located in a rotary drum shell, a feeding pipe is in communication with an inner pipe of the spiral conveyor, a dischargingport is formed in the inner pipe, spiral blades are fixed to the periphery of the inner pipe, a light phase outlet is located in an end cover on one side of the rotary drum shell, an isolation disc ofa disc system is arranged between the spiral blade at the tail end of the spiral conveyor and the light phase outlet, the isolation disc is fixed to the spiral conveyor, a flow channel is formed in the side, close to the inner pipe, of the isolation disc, and a solid phase channel is formed between the isolation disc and the inner wall of the rotary drum; and the disc system is positioned betweenthe isolation disc and the light phase outlet, and is fixed with the rotary drum. The disc system is additionally arranged between the rotary drum shell close to the light phase outlet and the innerpipe, tiny solid particles are rapidly separated from a liquid phase, the content of the tiny solid particles in a liquid is greatly reduced, and therefore final clear liquid with higher purity can beobtained, filtering treatment of the tiny solid particles does not need to be carried out in the later procedure, and the centrifuge capability of the centrifuge is increased.

The embodiment of the invention provides a sludge incineration treatment method. The sludge incineration treatment method comprises a sewage slurry associated burning incineration method and a synthetic sewage slurry atomization combustion method. The beneficial technical effects of the sludge incineration treatment method are embodied in: superiority: (1). simple slurry preparation process; (2).less slurry preparation equipment; (3). small floor space; (4). simple and convenient operation of the equipment; (5). reduction of production and operation cost; and (6) low requirements of fluidizedcombustion on quality standard of sewage slurry; efficiency: reducing cost and improving efficiency by stokehold slurry preparation, off-site slurry preparation reduction, storage, transportation andother processes; effectiveness: environmental protection technological process, win-win economic benefits, environmental benefits and social benefits; environmental protection: no wastewater discharge, no odor emission, and zero emission in production process; and advantage: respond to national environmental protection policy.

A non-halogen and fire-retardant polythene sandwich layer material for fireproof aluminum plate and its production are disclosed. The sandwich layer consists of low-density polythene 15-30 proportion, linear low-density polythene 15-20 proportion, polythene and octylene multi-polymer 3-15 proportion, aluminum hydrate 30-45 proportion, magnesium hydrate 10-15 proportion, fire-retardant synergist 2-25 proportion and coupler 0.5-5 proportion. The process is carried out by mixing aluminum hydrate and magnesium hydrate with coupler separately, mixing at 80-120 DEG C for 15-25mins by high-speed kneader, extruding out into strips by double-screw extruder, granulating by thermal cutting at 100-179 degrees C or cooling and granulating by dicing cutter to obtain final product. It has better machining fluidity, fire-retardant effect and mechanical performance.

Provided are an improved low-temperature rectisol method and an improved low-temperature rectisol device. Hydrogen sulfide and carbon dioxide in process gas are removed respectively in two absorbing towers, and the process gas is cooled between two towers so that part of carbon dioxide is liquefied and separated. The two towers absorb hydrogen sulfide and carbon dioxide respectively. Part of carbon dioxide is liquefied and separated by cooling the process gas after hydrogen sulfide is removed through the hydrogen sulfide absorbing tower so that content of carbon dioxide in the process gas is reduced, and content of carbon dioxide in the process gas entering the carbon dioxide absorbing tower is correspondingly reduced. The method can effectively reduce dimensions of a low-temperature rectisol pipeline and equipment, reduces methanol circulating quantity, equipment investment and production running costs are reduced, air-lift nitrogen dosage is reduced, and more pure-state carbon dioxide facilitating application and treatment is obtained.

A device of preparing pulp quickly and cleanly is prepared as connecting raw material unit to catalytic copolymerization unit, connecting catalytic copolymerization unit separately to separation unit of pulp washing and pulp bleaching as well as online recovery unit of catalyst, connecting separation unit of pulp washing and pulp bleaching to waste water recovering unit.