55results about How to "Reduce the total project investment" patented technology

The invention discloses a process and an apparatus thereof for low-temperature cracking and high-temperature gasification of biomass. By adopting superheated vapor steam as oxidizing agent and an energy carrier, the process comprises the following steps of: firstly, carrying out the low-temperature cracking on the biomass fuel in the temperature region of 500-800 DEG C and obtaining the crude synthetic gas and the coke without containing alkali metal oxides; secondly, carrying out the high-temperature gasification on the crude synthetic gas and the coke in the temperature region of 1200-1600 DEG C to obtain the initial synthetic gas without containing tar component; finally, cooling, dust-removing, deacidifying and drying the generated initial synthetic gas, i.e., acquiring the pure synthetic gas of high quality. The apparatus mainly consists of a cracking furnace, a gasifying furnace, a low-temperature plasma torch heater, a high-temperature plasma torch heater, a water storage tank,a water delivery pump and a heat exchanger and the like. The process of the invention has the advantages of easy control, low energy consumption and investment cost and high efficiency of cooled coalgas; the generated synthetic gas has high calorific value and does not contain tar and alkali metal compounds. The invention is suitable for not only biomass gasification combined cyclic power generation, but also preparation of biomass liquid fuel.

The invention discloses a treating and recycling zero-emission technology for coking phenol-cyanogen wastewater. According to the treating and recycling zero-emission technology, a pre-sedimentation oil separating tank, an air floating system, an adjusting aeration tank, an anaerobic tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank, a coagulating reaction tank, a quick filtering tank, an ultrafiltration raw water tank, an ultrafiltration system, a nanofiltration system, a reverse osmosis system, a concentrated water aerobic tank, a concentrated water anoxic tank, an SBR tank, a chemical oxidation tank, a bitter water film concentrating system, a softening rigidity removing system, a low-pressure sea-water film system, a high-pressure sea-water film system, an MVR evaporating system, a sludge thickening tank, a press filter and a Roots blower are adopted for technological treatment. The invention further discloses treating and recycling zero-emission equipment for coking phenol-cyanogen wastewater. The treating and recycling zero-emission technology and equipment are high in treatment efficiency and low in cost, and have the advantages that zero emission of sewage can be realized.

The invention relates to a residual charge discharge device for a valve hall of a converter station, which is included in a valve hall of a single converter station, and a busbar where the high-voltage pole point of the valve hall is located and a busbar where the low-voltage pole line point of the valve hall are respectively arranged. The ground knife is characterized in that: a ground knife is arranged on the connection bus between the valve-side terminal of the A-phase converter transformer and the valve-side terminal of the C-phase converter transformer of the Y-Δ converter transformer group, and the Y-Y commutation A ground knife is arranged on the bus where the neutral point terminal of the transformer group is located. The invention simplifies the eight ground knives in the valve hall of the prior art into four, saving the total project investment. The ground blades of Y-Y converter transformer group and Y-Δ converter transformer group respectively adopt the side wall type, which meets the required electrical distance and structural requirements, and avoids accidents caused by operating personnel during maintenance and overhaul in the valve hall. In case of safety accidents, the electrical layout of the valve hall has been optimized. The invention can be widely used in the field of high voltage direct current transmission.