39results about How to "Solve excess capacity" patented technology

The invention belongs to the technical field of electrochemical power source materials and discloses a method of adopting phosphorus fertilizer product for ultrasonic spraying to prepare multi-position collaborative doped LiFePO4 / C. Raw materials of the multibit collaborative doped LiFePO4 / C are from the phosphorus fertilizer product and byproducts and include Li, P, Fe, doped element cations K, Na, Ca and Mg and anions S and F. The multibit collaborative doped lithium iron phosphate material is marked as Li1-alpha X alpha Fe1-beta Y beta PO4-gamma Z gamma / C, X refers to lithium position doping, Y refers to iron position doping, Z refers to oxygen position doping, 0< / =alpha< / =0.05, 0< / =beta< / =0.05, and 0< / =gamma< / =2. Collaborative doping of lithium position, iron position and oxygen position is realized, and doping amount is adjustable; compared with single doping, doping materials are extensive in source, and the material is better in performance. The multi-position collaborative doped LiFePO4 / C material is uniform in grain diameter and excellent in electrochemical performance.

The invention relates to a preparation method of a platinum tin silicon dioxide catalyst for hydrogenation production of ethyl alcohol using acetic acid. The preparation method comprises the following steps: dissolving tin-containing salt and ethyl orthosilicate in ethyl alcohol and dropwise adding deionized water while stirring, thereby acquiring a SnOx-SiO2 compound oxide; adding an ammonia solution, and then adding a platinammine-containing aqueous solution; grinding the acquired solid into powder and forming, thereby acquiring the platinum tin silicon dioxide catalyst for the hydrogenation production of ethyl alcohol using acetic acid. According to the invention, a sol-gel method and an ion exchange method are combined for modifying the loading mode of Pt and Sn, the dispersity of Pt and Sn and the interaction degree of Pt and Sn are promoted, the PtSn catalyst with excellent performance is acquired and the efficiency of hydrogenation production of ethyl alcohol using acetic acid is increased. Compared with the catalyst used in the existing technique of hydrogenation production of ethyl alcohol using acetic acid, the catalyst provided by the invention can realize high conversion of acetic acid under a mild reaction condition; the conversion rate of acetic acid can reach 99% or more; the selectivity of ethyl alcohol can reach 95%.

The invention belongs to the technical field of electrolysis, and in particular relates to a co-production method of caustic soda and ferric orthophosphate. The co-production method of the present invention comprises: preparing NaOH and ferric ions by electrolytic method, using cation exchange membrane and / or microporous membrane as the separation membrane of cathode and anode, the aqueous solution containing sodium ion as catholyte, containing ferrous ion and An aqueous solution of sodium ions is used as an anolyte; ferric orthophosphate is prepared by a chemical precipitation method; a solution of ferric iron ions is used as a raw material, and an aqueous solution containing phosphate ions is added as a precipitating agent to generate ferric orthophosphate. Compared with the traditional chlor-alkali process, the present invention has the following advantages: 1. The caustic soda process can avoid the generation of chlorine gas and overcome the overcapacity of chlorine gas caused by caustic soda production; 2+ The oxidation potential (0.771V vs SHE) is much lower than that of chloride ion (1.36V vs SHE), so energy consumption can be reduced; the produced FePO 4 It can be used to prepare lithium-ion or sodium-ion battery electrode materials.

The invention provides a model coal raw material for increasing quality of low-rank coal of a tamping coke oven. The model coal raw material comprises a low-rank model coal layer formed by low-rank coal and an auxiliary agent. The auxiliary agent is an organic binder with weightlessness being less than 50% under destructive distillation isolated from the air at 850 DEG C. The model coal raw material also comprises a non-low-rank model coal layer formed by one or more selected from medium-rank coal, high-rank coal or medium / high-rank coal. By mass, the addition amount of the low-rank coal is 50-80 wt% of mass of the model coal raw material. By using the raw material as the model coal raw material for increasing quality of low-rank coal of the tamping coke oven, the problem that present tamping coke ovens have low availability and excess capacity exists in the coking industry is solved, and the problem that application of low-rank coal is limited because there is no large-scale industrial equipment is also solved. After the auxiliary agent is mixed with low-rank coal, active ingredients in the auxiliary agent are beneficial to degradation of high-molecular polymers in the low-rank coal at high temperature and fracture of macromolecules in the low-rank coal. Thus, output of oil gas is raised during the technological process.

The present invention relates to a method for preparing p-benzene diacetamide through amidation of p-diacetylbenzene. According to the present invention, p-diacetylbenzene is used as a raw material, an aminating agent, a vulcanizing agent and a solvent are added, and a reaction is performed at a reaction temperature of 80-180 DEG C under a reaction pressure of 0.5-2.0 MPa to obtain the product p-benzene diacetamide; and the method has advantages of simple operation, high p-diacetylbenzene conversion rate, high p-benzene diacetamide yield, non-toxic raw material, high reaction safety, high economic benefit, broad industrial application prospect and the like, and can avoid the use of nitrile substances.

The invention discloses a process method of extracting metal manganese from manganese-enriched slag. The process method comprises the steps of standing manganese-enriched slag liquid from a blast furnace, wherein as specific gravities are different, the liquid is layered, the upper layer is manganese-enriched slag liquid while the lower layer is iron liquid, and the iron liquid at the lower layer is discharged to separate iron; pouring the separated manganese-enriched slag liquid into a reaction kettle, proportioning a magnesium aluminum manganese alloy, and heating to 1500 DEG C to reduce the magnesium aluminum manganese alloy; after reacting for 1 hour, standing, wherein as specific gravities are different, the liquid is layered, the upper layer is hot slag liquid while the lower layer is manganese liquid, and the manganese liquid at the lower layer is discharged and cooled to obtain manganese. The extraction process provided by the invention is relatively simple, and the reduction rate of manganese is relatively high; during reaction, residual blast furnace gases are directly used for heating, so that the manufacturing cost is saved. On the other hand, the magnesium aluminum manganese alloy further can solve the existing problem of excess production capacity of magnesium and aluminum, so that the process method has good economic and social benefits.