71results about How to "Rich adjustment means" patented technology

The invention relates to a method for preparing methane by catalyzing and gasifying coal. The method sequentially comprises the following two steps: 1, successively or simultaneously carrying out preoxidation and ion exchange treatment on coal in a slurry containing coal and water; and 2, gasifying the product obtained in step 1 by sending it to a gasification furnace which sequentially comprises a gas generation segment, a coal methanation segment, a synthetic gas methanation segment and an optional coal pyrolysis segment from bottom to top to obtain a gas product containing methane.

The invention discloses a treatment method and device for gas containing carbon dioxide and hydrogen sulfide. The device includes a hydration reactor, a hydrate decomposer, a gas exhaust processor, a primary absorption reactor, a secondary absorption reactor and a product tank . Also provided is a method for treating gas containing carbon dioxide and hydrogen sulfide by using the above device. It can produce NaHS products that meet the national quality standards while achieving acid gas discharge standards, and organically combine environmental governance with the production process of chemical products into an integrated process. Compared with the prior art, the method of the present invention can economically and efficiently pretreat the gas containing carbon dioxide and hydrogen sulfide, rationally utilize the energy in the process, and greatly reduce energy consumption; the whole process is environmentally friendly, reliable, No "three wastes" are generated.

The invention discloses a ternary-cycle cascade refrigeration natural gas liquefaction system and a method thereof. Heat is transferred from a relatively low temperature level cycle to an adjacent relatively high temperature level cycle: a first stage propylene refrigeration cycle provides cold energy for natural gas, refrigerant ethene, and formulated refrigerant; a second stage ethene refrigeration cycle provides cold energy for the natural gas and the formulated refrigerant; and a third stage formulated refrigerant refrigeration cycle provides cold energy for the natural gas and the formulated refrigerant itself. Through the cooling by seven heat exchangers and one plate-fin heat exchanger, temperature of the natural gas is reduced gradually till the natural gas is liquefied. In the invention, temperature of purified natural gas is reduced gradually in seven heat exchangers and one plate-fin heat exchanger till the purified natural gas is liquefied. The cold energy needed in a liquefaction process is provided by the three systems of propylene refrigerant, ethene refrigerant, and formulated refrigerant. The systems have abundant adjusting means, and can provide matching cold energy for the natural gas liquefaction process, thereby showing operation flexibility and adaptability to raw materials of the method.

The invention disclose a production process for melting blister copper in a bath by side-blowing of oxygen enrichment and special apparatuses thereof, the process comprises the steps of melting concentrate of copper, diluting the slug and air refining copper matte, which is to say, adding the material comprising copper, quartz, limestone and fine coal into the furnace of bath and blowing the highpressure oxygen enrichment air into the furnace, the formed copper matte, slug are ceaselessly flowed into a diluting electric furnace, manufacturing acid after recycling waste heat by smoke gas at high temperature; overheating the slug through an electrode and separating the slug from copper matte to obtain the diluted slug and copper matte which is fed into the continuously-air-refining furnacethrough a chute slipway; reacting the copper matte with arenaceous quartz under the effect of compressed air to obtain the blister copper, performing mineral dressing to the air-refined slug, manufacturing the acid with SO<2>; the invention has less process investment, high heat utilization rate, low energy consumption, good effect of environmental protection, compact apparatus structure, small occupied area, great processing ability, light sticking in air flue, simple operations, diverse measures in adjusting the condition of furnace which is easy to control, high level of mechanization and low labor intensity.