2results about How to "Solve the temperature drop" patented technology

The application discloses a vacuum drying cabinet and a vacuum drying cabinet drying method, which comprises a vacuum cabin body, a vacuum pumping device connected with the vacuum cabin body and used for pumping the inside of the vacuum cabin body, and a hot air circulating device connected with the vacuum cabin body and used for supplementing heated air into the vacuum cabin body. The hot air circulating device is arranged to supplement heated air into the vacuum cabin body, so that the inside of the vacuum cabin body and the surface of instruments needing to be dried in the vacuum cabin body can be rapidly heated, the problem that the temperature of the surface of the instruments in the vacuum cabin body is reduced when the moisture on the surface of the instruments is vaporized can be effectively solved, the moisture vaporization speed after each vacuum pumping in the circulating drying process is improved, and the drying efficiency is improved. Moreover, the hot air circulating device is used for supplementing heated air into the vacuum cabin body, the heated air is supplemented into the vacuum cabin body when the pressure of the vacuum cabin body is released, the problem that the dried instruments are secondarily dampened or condensed due to the low temperature of the supplemented air is avoided, and the drying efficiency is further improved.

The application discloses an online adjusting device for micro-flow ammonia for denitration, which comprises intermittent ammonia supply units, vaporization units, buffer units and vapor-gas mixing units which are sequentially communicated; the intermittent ammonia supply units are communicated with liquid ammonia delivery pipes; the vapor-gas mixing units are communicated with ammonia injection lattices; the intermittent ammonia supply units are used for providing quantitative liquid ammonia supply; the vaporization units are used for vaporizing liquid ammonia; the vapor-gas mixing units comprise primary mixers and secondary mixers; the primary mixers are used for ammonia gas dilution; and the secondary mixers are used for online adjustment; adjusting valves are arranged between two adjacent units; and each adjusting valve is electrically connected with a DCS control system. The application combines intermittent ammonia supply and two-stage mixing, guarantees micro adjustment of ammonia flow under the condition of small ammonia consumption, realizes ultra-low emission transformation of industrial flue gas with low background nitrogen oxides, and has great engineering practical value.