4results about How to "Prevent low temperature" patented technology

This invention discloses a separation process for cold hydrogenation synthesis gas. The synthesis gas exiting the cold hydrogenation reactor undergoes heat recovery and rapid cooling for dust removal. A portion of the condensed chlorosilanes is further cooled by a chlorosilane water cooler and used as the absorbent in the middle of the absorption tower. The circulating mixed gas is cooled by a circulating mixed gas water cooler and then enters the lower part of the absorption tower. Silicon tetrachloride feedstock is then used as the absorbent in the upper part of the absorption tower, while the middle absorbent is cooled chlorosilane. The circulating mixed gas entering from the lower part of the absorption tower achieves separation of the cold hydrogenation product chlorosilane through the middle absorbent chlorosilane and the upper absorbent silicon tetrachloride feedstock. Only circulating water coolant is needed; low-temperature coolants (7°C coolant, -40°C coolant, etc.) are not required for multi-stage condensation of the circulating mixed gas to achieve the separation of the cold hydrogenation product chlorosilane, thus eliminating the need for a dedicated low-temperature coolant system for the cold hydrogenation unit.

The application provides a battery heating system and method for an electric vehicle, the battery heating system comprising a battery, a bus capacitor, a three-level driving circuit, and a midpoint current amplification module, the three-level driving circuit comprising a first vertical tube circuit, a second vertical tube circuit, and a third vertical tube circuit; the bus capacitor comprising an upper bridge capacitor and a lower bridge capacitor, the upper bridge capacitor and an upper bridge part of the first vertical tube circuit, the second vertical tube circuit, and the third vertical tube circuit forming an upper bridge circuit, the lower bridge capacitor and a lower bridge part of the first vertical tube circuit, the second vertical tube circuit, and the third vertical tube circuit forming a lower bridge circuit; the upper bridge capacitor and the lower bridge capacitor being connected to each other and in parallel with the battery, so that a midpoint potential between the upper bridge capacitor and the lower bridge capacitor forms a midpoint current; the midpoint current amplification module being arranged between the midpoint potential and a three-phase circuit of a motor, increasing the midpoint current, so that the current flowing through the battery is increased to heat the battery, thereby solving the energy loss problem of the midpoint current and the preheating requirement of the battery in winter.

The utility model discloses a kind of combined device for producing biogas and generating electricity by biogas feed liquid, it is related to green new energy technical field, and it includes: storage tank, monitoring mechanism, stirring mechanism and feeding mechanism;Monitoring mechanism includes PH monitor, temperature sensor and biogas component sensor;Stirring mechanism includes mounting shaft, screw thread leaf and stirring frame;Feeding mechanism includes storage barrel and weighing sensor.Utilize monitoring mechanism to realize the real-time feedback of PH, temperature and biogas component data, dynamic adjustment fungicide addition amount, effectively reduce artificial intervention, improve fermentation stability, utilize screw thread leaf can axial advance feed liquid, enhance vertical mixing, stirring frame can be radially stirred, break scum layer and promote mass transfer, prevent bottom precipitation, utilize weighing sensor can accurately control microorganism fungicide addition amount, by electromechanical integration design, the efficient closed loop of monitoring-regulation-gas production-power generation is realized, especially suitable for small and medium scale biogas engineering.

The utility model provides an infusion apparatus clamping and fixing device, which comprises a fixing component, a connecting component and a fixing component, the fixing component comprises an upper clamping piece, a connecting piece and a lower clamping piece, the upper clamping piece and the lower clamping piece are mounted on one side of the connecting piece at an interval, the upper clamping piece is matched with an infusion bottle opening, and the lower clamping piece is matched with an infusion tube; the heating assembly comprises a heating sleeve and a displayer, and the heating sleeve is connected to the lower clamping piece. During use, the upper clamping piece clamps a bottle opening part of an infusion bottle, the lower clamping piece clamps an infusion pipeline, the relative positions of the bottle opening of the infusion bottle and the infusion pipeline are fixed, meanwhile, the infusion pipeline is wrapped with the heating sleeve connected to the lower clamping piece, and a resistance wire in the heating sleeve is electrified and heated; according to the device, an infusion bottle and an infusion tube are prevented from falling off, meanwhile, a certain infusion liquid heating function is provided, medical accidents are avoided to a certain degree, meanwhile, the workload of medical staff is relieved, use is convenient, and the function is practical.