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52results about How to "Supporting requirements are low" patented technology

High-temperature coal gas desulfurizer using coal ash as carrier and desulfurization device thereof

The invention aims at solving the problem such as low desulphurization activity of desulfurizer, low mechanical strength, poor regeneration property and higher cost and the like, which discloses a high temperature desulfurizer which uses coal ash as carrier and a desulfurization device , the method comprises utilizing mechanical mixing method to mix multicomponent metal oxide, coal ash and adhesive of the activity component through machine, then extruding into strip shape by utilizing a self-made desulfurizer, drying formed desulfurizer under the temperature of 100-200 DEG C, and calcining under the temperature of 600-1000 DEG C, desulfurizer which is calcined is directly used to desulfurize coal gas under the high temperature. High-temperature desulfuration of hot coal gas adopts a circulating fluidized bed to achieve continuous desulfurization and regeneration, and desulfurizer can effectively remove H2S in high-temperature coal gas under the temperature scope which is 400-750 DEG C. Desulfurizer after being vulcanized can be regenerated in a fluid bed regenerating device. The high temperature desulfurizer has the advantages of simple preparation technique, simple equipment and low cost, which has higher vulcanization activity and sulfur capacity, excellent desulfurizing capacity and higher mechanical strength, and opens up a new approach which utilizes ash from power plant to be carrier to prepare high-temperature coal gas desulfurizer.
Owner:SHENYANG INST OF AERONAUTICAL ENG

Positive end expiratory pressure valve pressure control device

The invention relates to a positive end expiratory pressure valve pressure control device which comprises an exhalation valve 2, a proportional valve installation base 4, a flow proportional valve 5 and a current-limiting capillary copper pipe 1, wherein one end of the proportional valve installation base 4 is connected with one end of the exhalation valve 2, the flow proportional valve 5 is arranged on the proportional valve installation base 4, and the current-limiting capillary copper pipe 1 is connected at the other end of the exhalation valve 2. The positive end expiratory pressure valve pressure control device is characterized in that the pressure control device is simple in design, only one current-limiting capillary copper pipe 1 is additionally arranged in the traditional structure, cost of the current-limiting capillary copper pipe 1 can be ignored, fixed low flow and pressure input are supplied in a positive end expiratory pressure (PEEP) cavity of the exhalation valve 2, and the flow proportional valve 5 is used for controlling the caliber of an exhaust port located in the PEEP cavity of the exhalation valve 2 so as to change the PEEP. Matching requirements on the flow proportional valve 5 and hardware platforms is correspondingly reduced, the exhaust end of the flow proportional valve 5 is directly connected with the air, fast response can be carried out along with valve adjustment, the delay time is shortened, and reliability of breathing machines is improved.
Owner:上海力申科学仪器有限公司
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