50results about How to "Reduce liquefaction" patented technology

Provided is a fuel supply system for a high-pressure natural gas injection engine. The fuel supply system includes: a BOG compression unit configured to receive BOG, which is generated in a storage tank, from the storage tank and compress the received BOG to a pressure of 12 to 45 bara; a reliquefaction apparatus configured to receive and liquefy the BOG compressed by the BOG compression unit; a high-pressure pump configured to compress the BOG liquefied by the reliquefaction apparatus; a high-pressure gasifier configured to gasify the BOG compressed by the high-pressure pump and supply the gasified BOG to the high-pressure natural gas injection engine; and an excess BOG consumption unit configured to consume excess BOG corresponding to a difference between an amount of BOG generated in the storage tank and an amount of BOG required as fuel for the high-pressure natural gas injection engine.

The invention discloses a staggered maze cooling reaction still magnetic liquid sealing device and belongs to the field of mechanical engineering sealing. The problem that when existing magnetic liquid sealing devices are used on reaction stills, due to the fact that organic solvent vapor in the reaction stills has a corrosion function on magnetic liquid, the sealing devices are short in service life and prone to losing efficacy is solved. The device is composed of a magnetic liquid sealing assembly, a movable ring (17), a fixed ring (2) and a positioning ring (5). The fixed ring (2) is low in temperature and good in thermal conductivity, a groove is formed in an inner circle of the movable ring (17), and the movable ring (17) is poor in thermal conductivity, so that the fixed ring and the movable ring form a staggered maze, and liquefying of the organic solvent vapor is facilitated. The upper end face of the fixed ring (2) and the upper end faces of sealing teeth of the fixed ring (2) are inclined faces inclining towards a rotation shaft (15), and thus the liquefied organic solvent vapor flows downwards advantageously. The temperature of fixed ring cooling liquid is 11-15 DEG C lower than that of pole shoe cooling liquid, and liquefying of the organic solvent vapor on a pole shoe is reduced advantageously. The problem that the sealing devices are short in service life due to corrosion of organic solvent vapor to magnetic liquid is successfully solved.

The invention provides a method for repairing heavy metal contaminated soil through magnesium oxide and microorganisms, and belongs to the technical field of geotechnical engineering. The method comprises the steps of preparation of a mixture, preparation and detection of an improved mixture, and remediation of the heavy metal contaminated site. The mixed material contains magnesium oxide, the improved mixed material comprises a mixed material and a microbial liquid, and the repairing is performed by paving a plurality of layers of geomembranes and a plurality of layers of improved mixed materials on the heavy metal polluted site. According to the heavy metal polluted site repaired through the method, curing of harmful elements can be achieved, and pollution to the environment is reduced. Particularly, the magnesium oxide is added to provide an alkaline environment for microorganisms, so that the carbonate minerals can better wrap and adsorb heavy metal ions, and a reaction product of the carbonate minerals and the microorganisms can fix carbon dioxide to make a contribution to atmospheric pollution treatment in China. In addition, a cheap culture medium is adopted for microorganism culture, and cost is reduced.

Provided is a method of constructing a natural gas liquefaction plant, which can shorten a construction time period by minimizing effect of a lead time for the refrigerant compressor thereon, the method including: transporting a refrigerant compression module body 175 to an installation area 85, wherein the refrigerant compression module body is provided with a frame 120 configured to allow refrigerant compressor 150 for compressing a refrigerant for cooling natural gas to be mounted therein; installing the refrigerant compression module body 175 to the installation area 85; and mounting the refrigerant compressor 150 into a mounting space 130 predefined in the frame 120 of the installed refrigerant compression module body.

The invention discloses an engine external reforming unit with a cooling temperature controllable device. The engine external reforming unit comprises an external reformer with the cooling temperaturecontrollable device. An inlet of the external low-temperature fuel reformer is connected with an air inlet pipe and a fuel injection pipe. The air inlet pipe is connected with a gas compressor and aflow meter. The fuel injection pipe is connected with a fuel injection pump and a fuel gasifying tank. An outlet of the external low-temperature fuel reformer is connected with an engine intake duct.Initial reformed fuel and fresh air are controlled and guided into the external low-temperature fuel reformer through the fuel injection pump and the gas compressor correspondingly and have a reactionin the reformer to obtain reformed gas, and the reformed gas is guided out from the outlet of reformer and passes through the cooling temperature controllable device. The engine external reforming unit adjusts the speed of controlling the cooling temperature to drop by the cooling temperature controllable device, guides required gaseous low-temperature oxidation products with different activitiesinto the engine intake duct to be mixed with fresh air and then guides the mixed gas into an engine to achieve activity and concentration stratification cooperative controlled burning of the mixed gas.

A soil reinforcing device for reinforcing a ground supporting a load structure, wherein said soil reinforcing device comprises a first assembly comprising:a plurality of cells extending vertically and forming a cell mesh;a plurality of draining devices extending vertically and located in said cells.

The invention discloses a construction method of an industrial building shock absorption foundation. The construction method is characterized by comprising the following construction steps of (1) mounting a hydraulic valve on a prefabricated support column, and then pressing the prefabricated support column into a soil body; (2) excavating the soil body to a designed bottom elevation, paving geotechnical cloth on an arch-shaped base, and enabling raft plate and concrete inverted beam formworks to adopt brick moulding beds; (3) binding steel bars of a raft plate and a concrete inverted beam, erecting the raft plate and concrete inverted beam formworks, and reserving shock absorption holes in the raft plate; (4) pouring concrete of the raft plate and the concrete inverted beam; (5) placing shock absorption blocks in the shock absorption holes, placing the shock absorption blocks on supporting columns, paving shock absorption materials on the shock absorption blocks, and paving steel plates on the shock absorption materials for sealing; (6) arranging buttresses on the steel plates at the shock absorption holes; (7) arranging a bearing frame on the buttresses; and (8) installing industrial equipment on the force bearing frame. The construction method is good in shock absorption effect.

The invention discloses a fabricated building construction carbon emission treatment system, and relates to the technical field of environmental protection. The system mainly comprises a mixing tank,a combustion tank, a desulfurization device and a liquefaction device, wherein the bottom of the mixing tank and the bottom of the combustion tank are fixed on the ground through foot supports, a waste gas pipe is arranged at the bottom of one side of the mixing tank, an oxygen pipe is arranged on the side surface of the waste gas pipe, the top of the mixing tank is connected with an induced draftfan mounted at the bottom of the combustion tank through a first ventilation pipe, the output end of the induced draft fan vertically and upwards extends into the bottom of the combustion tank, the top of the combustion tank is fixedly connected with one end of a second ventilation pipe, the other end of the second ventilation pipe is fixedly connected with the desulfurization device, and the desulfurization device is communicated with the liquefaction device through a third ventilation pipe. In the implementation process of the system, the carbon dioxide is combusted, so that the treatment efficiency of the carbon dioxide is effectively improved, the carbon dioxide is liquefied, the effect of change waste materials into things of value is achieved, and the practicability of the treatmentsystem is effectively improved.

The invention relates to the field of sewage treatment and discloses an anaerobic digestion biogas slurry vacuum concentration and recycling method. The anaerobic digestion biogas slurry vacuum concentration and recycling method comprises the following steps of feeding biogas slurry into a purification tower from an anaerobic digestion tank, performing heating and purification to convert liquid into secondary steam, and feeding the secondary steam into a defoaming tank for defoaming and then into a buffer tank; returning liquid in the buffer tank to the purification tower and gas into a biogasslurry cooler, and discharging condensate water in the biogas slurry cooler into a water seal tank; conveying water of the water seal tank to the anaerobic digestion tank as digestion supplementary water for recycling. According to the anaerobic digestion biogas slurry vacuum concentration and recycling method, the biogas slurry is concentrated at negative pressure, and the entire treatment process avoids destroying nutrients such as organic matters; the content of organic matters in the purified biogas slurry is higher than 65%, and accordingly the purified biogas slurry can be directly applied to farmlands; the condensate water collected in the water seal tank is 50-55 DEG C and contains less than 300 ppm of NH4-N, sulfide and the like, and when serving as the supplementary water of theanaerobic digestion tank, can keep constant temperature, shorten the liquidation and acid production time and improve the yield of biogas.