38results about How to "Save coke" patented technology

The invention discloses a production method of inorganic fiber by using red mud and fly ash, mainly comprising the following steps: using the red mud and the fly ash as the raw materials, mixing the raw materials with the one or more of quick lime and industrial solid slag at certain ratio, adding the water, and drying naturally or stream-curing to form the block materials, mixing the raw materials with the coke at certain ratio in a cupola furnace, performing the high temperature melting to obtain inorganic fiber melt, and enabling the melt to flow into a four-roller centrifuge, throwing the melt at extremely high speed through the high-speed rotation of the four-roller centrifuge to form the inorganic fiber with the diameter of 3 to 7 mu m and the length of 7 to 20 cm, and discharging the iron slag from an iron notch at the side bottom of the cupola furnace to recover the iron. The method of the invention transforms the wastes and the harms into treasures, and reduces environmental pollution of the red mud, the fly ash and the industrial solid slag with high calcium content. The method of the invention makes the full use of the resources such as Al2O3, SiO2, Na2O, CaO and Fe2O3 in the red mud, the fly ash and the industrial solid slag with high calcium content, recycles the waste materials, saves the coke and has low production cost.

The invention provides a method for controlling the radial ore to coke ratio in a blast furnace burden distribution process. The method comprises the following steps that: a blast furnace burden parameter and a blast furnace body equipment parameter are collected; the function relationship between each control parameter in the blast furnace burden distribution process and the current formed burden distribution burden level is built; the function relationship between the current formed burden distribution burden level and the burden distribution burden level after the burden level reduction is built; a blast furnace burden distribution process control model is built and is used for describing the relationship between a blast furnace burden distribution radial ore to coke ratio curve and each control parameter; the optimum control parameter is determined by using the blast furnace burden distribution process control model, and the current blast furnace burden distribution process is controlled in real time; and when the error of the radial ore to coke ratio curve in the real-time control process of the current blast furnace burden distribution process is greater than an error allowable value, the blast furnace burden distribution process control model is rebuilt, and otherwise, the current blast furnace burden distribution process is completed according to the current ore to coke ratio curve. The method provided by the invention has the advantages that the real-time burden level shape can be provided, so that operators can be effectively guided for improving a charging system, modifying a burden distribution matrix and regulating the furnace burden distribution.

The invention relates to a device for recovering zinc by using zinc-contained dust of steel and iron works and a recovery method thereof. The zinc-contained dust of the steel and iron works is sprayed into an enriching furnace, or is added in the enriching furnace after being caked; zinc in the dust is reduced to zinc steam in the enriching furnace; generated zinc-contained smoke is leaded into a cloth bag dust collector after rough dust removal and afterheat recovery of a heat exchanger; zinc is oxidized as zinc oxide, and is captured on the cloth bag dust collector to obtain high-zinc dust; the high-zinc dust is sprayed into a recovery furnace; zinc in the dust is reduced as zinc steam in the recovery furnace; high-zinc smoke generated in the recovery furnace is captured by lead liquid in a condensation separation device; and liquid-stage rough zinc is obtained after separating liquid-state zinc from liquid-state lead. The high-zinc smoke generated in the recovery furnace also can be cooled by water in a spray washing tower, oxidized, captured and precipitated as zinc oxide mud after rough dust removal and afterheat recovery of an afterheat boiler and the heat exchanger; and the zinc oxide mud is centrifugally dried to obtain zinc oxide.

The invention relates to a heavy hydrocarbon oil catalytic cracking addition agent and a preparation method which belongs to the field of catalytic cracking catalyst of hydrocarbon oil, in particular to an optimized addition agent of a hydrocarbon oil catalytic cracking catalyst. The invention is characterized by comprising the following components (weight percent): 10 to 65 percent of Al2O3, 2 to 13 percent of P (counted in P element), 1 to 15 percent of SiO2 as well as 10 to 65 percent of clay. The addition agent of the invention can be compounded and used with various catalytic cracking catalysts to improve the effective conversion rate of the heavy hydrocarbon oil and the selectivity of a cracking reaction is good, thereby improving the yield of gasoline and liquid gas, improving the gasoline octane number, reducing the olefin content in the gasoline, endowing the catalyst with the performance for resisting the pollution of heavy metals, providing and maintaining the continuous high activity and aquathermal stability of the catalyst, enhancing the wear-resistant intensity performance of the catalyst, and prolonging the service life of the catalyst. The addition agent is an ideal heavy hydrocarbon oil catalytic cracking addition agent.

The invention provides a production method of a mesoporous SAPO-34 suitable for commercial applications. A hydrothermal synthesis method commonly used for industries is adopted, wherein a cheap organic pore-forming medium for commercial supply is introduced, the cheap organic pore-forming medium is not only capable of forming pores, but also capable of accelerating a crystallization process. Diethanolamine and N-substituted derivatives thereof form a large-pore structure once in a crystallization process, and the pore diameter of the large-pore structure can be regulated according to the sizeof a substituted organic group of the large-pore structure; and the formation time of a crystal nucleus is shortened by the N-substituted derivatives and a templating agent tetraethylammonium hydroxide (TEAOH), so that the crystallization process is accelerated. Crystallization can be finished within 3h, diethanolamine and the N-substituted derivatives thereof are removed by washing, and the generated SAPO-34 is high in crystallinity and high in olefin selectivity.

The invention discloses a method for regenerating a rock wool waste mixture. The method is characterized by comprising the following steps: I, crushing rock wool waste; II, putting raw materials into a three-chamber dosing machine and mixing with an additive A and an additive B; III, adding water and stirring; IV, conveying the evenly stirred materials to a regenerated rock wool raw material forming machine through a feeding conveyer; V, forming; VI, conserving; and VII, storing. The regenerated rock wool raw material produced by using the method can be used as a main raw material for producing rock wool; firstly, iron slag in the produced generated rock wool raw material can be sorted out due to a larger particle size, and thus long-time production can be carried out without frequent stop and cleaning of slag during the production process of rock wool; and secondarily, the produced regenerated rock wool raw material is a composite material and has low melting temperature, so that coke can be saved by 30%, the wool production efficiency can be increased by 25%, and the problem of shortage of the rock wool raw material can be solved.

The invention discloses a pellet binder prepared from residues in the direct coal liquefaction process and a preparation method thereof. The preparation method comprises the following steps of: blending the residues in the direct coal liquefaction process, bentonite, a dispersant, sodium carbonate and water in a certain proportion, and performing wet ball-milling pulping to obtain a stable liquidpellet binder; and drying the liquid pellet binder, and crushing to obtain a powdery pellet binder. The binder has low cost, the content of silicon oxide introduced into a product is low, more ferricoxide and organic matters are introduced, the grade of an iron ore raw material is improved, coke consumption is lowered, the preparation method is an effective way to fully use the residues in the direct coal liquefaction process, waste materials are changed into valuable materials, and energy conservation, emission reduction and good economic and social benefits are realized.

A high-efficient energy-saving magnesite kiln is provided, which is an improvement of magnesite kiln structure, and solves the problems of poor quality, coke consumption and high cost of magnesia fired in the past magnesite kilns. The invention is composed of a kiln, an air supply tubular loop and a valve. At least two air supply tubular loops are provided on the kiln wall; the valve is provided in the air supply tubular loop connected with a blower; an air outlet is provided on the kiln wall and is distributed on the kiln wall in tubular shape; the cycle number of the air outlets is the same as the quantity of the air supply tubular loop; the air outlet is communicated with the corresponding air supply tubular loop. The invention has the advantages that: the wind force in the kiln is reinforced via the air supply by a plurality of air supply tubular loops; the burden is distributed evenly and the oxygen is fully burned so as to improve product quality, save coke and reduce cost.

The invention relates to a technology and equipment used in fire ore-smelting electric furnace smelting production, in particular to a movable electric furnace coal injection method for replacing coke by anthracite in electrosmelting by a fire method. The method is characterized in that when raw materials in a smelting furnace is heated to a fusion state, a mixture of anthracite powder and air or a mixture of anthracite powder and oxygen is added below the liquid level in the furnace. The invention is obviously suitable for all production technologies adopting electric furnaces for smelting and needing carbonaceous raw materials, thereby saving electric energy and coke.

The invention relates to a system and a method for adjusting the concentration of combustible components in dry quenching circulating gas. The system comprises a coke powder cooling device and an air introduction device; and the coke powder cooling device consists of a coke powder surge bin and a coke powder cooler, and the air introduction device consists of an air supply fan, an air preheater and an air distributor. By changing the position and mode of air introduction in the dry quenching system, the working efficiency of the primary dust remover is improved, and the operation and maintenance period of the primary dust remover and the waste heat boiler is prolonged; and the carbon dissolution reaction amount of coke breeze particles in the annular air channel and the primary dust remover is reduced, and coke breeze waste heat collected by the primary dust remover is recycled, so that the economic benefit of the coke dry quenching system is improved, and meanwhile, the operation stability of the coke dry quenching system is improved.