57results about How to "Lower energy consumption ratio" patented technology

The invention provides a method for producing olefins and aromatics from inferior heavy oil. The method for producing the olefins and the aromatics from the inferior heavy oil comprises the steps thatthe inferior heavy oil is subjected to boiling bed hydrogenation, catalytic cracking is performed in a catalytic cracking riser reactor, and a reaction product enters a fractionation absorption and stabilization unit; the gas fraction obtained by fractionation enter a gas fine separation unit, the separated C2+ alkane gas is fed to a steam cracking unit to further produce the olefins; and naphthaobtained by fractionation enters an aromatics extraction unit to obtain benzene, toluene and xylene products; and heavy circulating oil obtained by fractionation and oil slurry are returned to a pre-treatment process. According to the method for producing the olefins and the aromatics from the inferior heavy oil, the requirements on raw materials is reduced to the greatest extent, the conversionratio of the inferior heavy oil into the high-value-added olefins and aromatics is improved, the problems of catalyst deactivation and coking are effectively alleviated, the operating cycle of production equipment is prolonged, and the economic benefit is maximized.

The invention discloses a high-efficiency double-layer multi-stage vibrating screen, which comprises a base, a frame, an upper fixed screen box, an upper floating screen box, a lower fixed screen box, a lower floating screen box and an exciting motion device; the upper floating screen box and The lower floating screen box is suspended and installed on the frame by a plurality of symmetrically arranged upper elastic suspension rods and lower elastic suspension rods respectively. The upper fixed screen box, upper floating screen box, lower fixed screen box and lower floating screen box are adjacent A flexible screen is connected between the two screen support frames; the vibration excitation device includes an eccentric excitation shaft, an active vibration exciter, a driven vibration exciter, a spring guide, a fixed frame, an upper and lower limit guide sliding mechanism, Upper drive rod, lower drive rod and steering rod. The invention can realize dry efficient screening of difficult-to-sieve materials with high viscosity and improve the probability of fine particle materials to be screened under the premise of better, rapid and comprehensive layered screening of material particles, and is especially suitable for the coal preparation process Raw coal classification and screening.

The invention discloses a polyester chip for producing automobile interior decoration fibers and a preparation method thereof. Firstly, the polyester chip that meets the technical requirements is synthesized: using a two-pot process semi-continuous polymerization reaction device, by introducing isocyanate in the esterification reaction Construct and replace carboxylic acid to reduce the melting point of the product to the target range, and then add reactive catalyst, stabilizer, auxiliary materials, etc. in the polycondensation reaction to control the reaction temperature and vacuum degree, and the final synthetic intrinsic viscosity is 0.730‑0.740dl / g The target polyester chip base material; the synthesized product is passed through the solid phase drum device water steam crystallization process to complete the pre-crystallization of the polyester chip; the pre-crystallized polyester chip is obtained by temperature control without cooling down. The continuous negative pressure processing technology completes the drying of polyester chips. After drying, the water content of polyester chips is not higher than 0.05%, and the intrinsic viscosity is not lower than 0.715dl / g. Through the above three steps, the special polyester chips for automotive interior fibers that meet the requirements of industrial production can be prepared.

The invention relates to a particle magnesium desulfurizer / particle magnesium alloy desulfurizer based on magnesium, magnesium alloy and waste materials thereof and a preparation method. In the invention, with magnesium, a magnesium waste material or a magnesium alloy and a magnesium alloy waste material as raw materials, and with a salt additive as an auxiliary material, a composition mixing 93%of magnesium solution or magnesium alloy solution and 7% of salt solution is formed, wherein the salt solution comprises the following components and contents: 50-65% of sodium chloride, 30-45% of potassium chloride and 2-5% of magnesium chloride; and a matched scheme combining with a production line and a production process is adopted. In the invention, the comprehensive problems of high energy consumption, serious pollution, poor safety, serious resource waste, high equipment failure, too many substandard products, high production equipment investment, low output, loose finished product surface structure, low compactedness, easy falling, easy moisture absorption, influences on steel output and quality, great magnesium resource loss, low utilization rate and the like in the traditional finished particle magnesium product and production thereof are overcome; the particle magnesium desulfurizer / particle magnesium alloy desulfurizer is widely applied to molten iron pretreatment desulfurization and molten steel deep desulfurization in iron and steel smelting and utilized as a component of a cast iron mixed denaturing agent and an intermediate alloy in the production of fusion ferrosilicon.

A locking tooth-type insulation temperature measuring device used for an end cap of a motor mainly comprises an insulation temperature measuring device fixed in an end cap hole of the motor which is composed of an insulation support member and a temperature measuring member which is arranged in the insulation support member. According to the locking tooth-type insulation temperature measuring device used for the end cap of the motor, defects that the temperature measuring member and the end cap of the motor are not fixed fixedly, and the temperature measuring member is led to not work normally are overcome, and the locking tooth-type insulation temperature measuring device used for the end cap of the motor is suitable for being auxiliary products of all kinds of motor bearings, and in particular to being motor bearing insulation end cap products which need to strictly control shaft current.