36results about How to "Shorten desorption time" patented technology

A method of detecting particles during inspection is provided. The method includes establishing a security checkpoint including a detection system, wherein the detection system includes a chamber defining a passage and includes a plurality of jets. The method also includes passing an individual through the passage, enhancing a convection plume including particles from the individual by blowing air through at least one of the plurality of jets, and absorbing the particles in a preconcentrator including a filter encased in a frame having a high thermal conductivity. Moreover, the method includes evaporating the particles absorbed in the preconcentrator and using a detector to determine whether the particles are from at least one of an explosive material and a narcotic substance.

The invention relates to an energy-saving efficient adsorption and desorption combined system which is characterized in that (1) an adsorption bed is provided with a hollow active carbon clapboard which is communicated with hollow side walls; and the two hollow side walls are respectively provided with a hot air inlet and a hot air outlet; and (2) a catalyst bed body of a catalytic combustion bed is sequentially provided with a catalyst electric heater, an air distributing plate and a catalytic bed layer from top to bottom; a first air outlet of the catalytic combustion bed is connected with a first air inlet of a mixed flow heat exchanger through a pipeline; a second air outlet of the catalytic combustion bed is connected with the hot air inlet of the hollow side wall of the adsorption bed through an adsorption bed heating fan; the air outlet of a fresh air mixed flow fan is connected with a second air inlet of the mixed flow heat exchanger; and the air outlet of a desorption circulating fan is connected with the air inlet of the catalytic combustion bed through a second flame damper. The system is simple and reasonable in structure, and safe and reliable; and moreover, the system has the advantages that the energy consumption is effectively reduce, the purifying rate is improved, the time of a desorption process is shortened, the purifying efficiency is improved, and the operation cost is lowered.

The invention discloses a series targeted adsorption and parallel desorption organic waste gas treatment device, which comprises a series adsorption system, a parallel desorption system and a catalytic combustion system; Circulation pipeline and main fan; parallel desorption system includes desorption fan, secondary heat exchanger, desorption intake pipe, automatic valve and desorption exhaust pipe; catalytic combustion system includes primary heat exchanger A, primary heat exchange B, heater and catalytic reactor. The invention selects corresponding targeted adsorbents according to the molecular diameter and adsorption characteristics of different pollutants, the thin layer design of the adsorption bed and the multi-stage parallel desorption mode, shortens the desorption time and can effectively control the desorption peak concentration. In order to avoid the safety problems caused by desorption due to the excessively long adsorption zone, the relative stability of the VOCs concentration during desorption reduces the heating frequency of the catalytic combustion system, avoids the agglomeration of the catalyst, and makes full use of the energy saved by the combustion reaction heat of VOCs.

The invention relates to an automatic high-efficiency energy-saving purification system for industrial volatilizable organic pollutants, which is characterized in that: (1) both opposite side walls of an active carbon bed body of an adsorption bed are set into side walls with hollow structures, an active carbon clapboard is set into an active carbon clapboard with a hollow structure, the active carbon clapboard with the hollow structure is communicated with the side walls with the hollow structures, and the two side walls with the hollow structures are respectively provided with a hot air inlet and a hot air outlet; and (2) a catalytic combustion bed is connected with a plate-type heat exchanger, and the plate-type heat exchanger is connected with the hot air inlets on the side walls with the hollow structures of the adsorption bed through an adsorption bed heating fan. The automatic high-efficiency energy-saving purification system for the for industrial volatilizable organic pollutants has a simple and reasonable structure, can effectively reduce energy consumption, improve the purifying rate, prolong the service life of a catalyst, shorten the desorption process time, improve the purifying efficiency and reduce the operating cost, and is safe and reliable.

The invention relates to an efficient energy-saving purifying system for industrial volatile organic pollutants. The system is characterized in that (1) an adsorbent bed is provided with an active carbon clapboard of a hollow structure, wherein the active carbon clapboard is communicated with side walls of a hollow structure, and the two side walls of a hollow structure are provided with a hot air inlet and a hot air outlet respectively; and (2) a catalytic combustion bed is connected with a plate type heat exchanger, wherein the plate type heat exchanger is connected with the hot air inlets of the side walls of a hollow structure of the adsorbent bed through an adsorbent bed heating fan. The system provided by the invention is of a simple and reasonable structure, and ensures that the energy consumption can be effectively reduced, the purifying rate is improved, the service life of a catalyst is prolonged, the desorption time is shortened, the purifying efficiency is improved, and the operation cost is lowered, thereby being a safe and reliable efficient energy-saving purifying system for industrial volatile organic pollutants.

The method for activated carbon fiber variable voltage desorption gas relates to a method of desorption gas by using activated carbon fiber. The method solves the problem of high energy consumption in the prior art. The method comprises: the two ends of an adsorbent bed are sequentially switched on 4-6V of alternating voltage to be heated for 28-32s, 8-12V of alternating voltage to be heated for 28-32s, 13-17 V of alternating voltage to be heated for 28-32s, 18-22 V of alternating voltage to be heated for 28-32s and 13-17 V of alternating voltage, and is then continuously heated by changing the 13-17 V of alternating voltage into 4-6V of alternating voltage when the temperature reaches 70-72 DEG C; the temperature of the carbon fiber is kept within the range of 69-71 DEG C for 8-12min, and the gas with the mass percent of 90-99% can be obtained by desorption. The method has short desorption time, low energy consumption, and simple operation and technique.

The invention discloses a method for extracting lithium through a split-type adsorption device, comprising: adding an adsorbent to the split-type adsorption device, making a lithium-containing solution flow through the split-type adsorption device, at least part of the lithium-containing solution Lithium ions are adsorbed by the adsorbent; water is made to flow through the segmented adsorption device to desorb the lithium ions in the adsorbent. The invention utilizes a segmented adsorption device to extract lithium from lithium-containing salt lake brine, which can effectively improve the elution rate of lithium, greatly shorten elution time, and save water consumption. The desorption is assisted by an external electric field, and the desorption lasts for 2-4 hours, and the desorption rate of lithium is between 85-92%. Compared with no electric field, the desorption efficiency of the adsorbent to lithium increased by 5-15% after the desorption continued for 2-4 hours. The time for obtaining the same extraction rate of lithium is shortened by 4‑8h through the assisted desorption by an external electric field.

The invention relates to a high-efficiency energy-saving absorption device of an industrial volatilizable organic pollutant. The device comprises an air inlet flaring part, an active carbon bed body and an air outlet reducing part, wherein two opposite faces of the active carbon bed body are connected with the air inlet flaring part and the air outlet reducing part respectively; an air distribution plate is fixedly arranged on the air inlet flaring part; a plurality of layers of active carbon partition plates are arranged in the active carbon bed body; two opposite side walls of the active carbon bed body are set as side walls having a hollow structure respectively; the active carbon partition plates have the hollow structure; the active carbon partition plates having the hollow structure are communicated with the side walls having the hollow structure; and a hot air inlet and a hot air outlet are respectively formed on the two side walls having the hollow structure. The high-efficiency energy-saving absorption device of the industrial volatilizable organic pollutant is simple in structure, scientific and reasonable in design, safe and reliable, effectively utilizes catalytic combustion waste heat, shortens desorption time, reduces the consumption of electric energy, reduces operating cost, and is accordant with the national policy of energy conservation and emission reduction.

The invention relates to a temperature and humidity sensor of a refrigerated transport carrier and a producing method thereof. A temperature-sensing unit and a humidity-sensing unit of the sensor are respectively fixedly installed in a corresponding square groove produced by a silicon nitride passivation layer. The producing method comprises steps: depositing a thick silicon nitride passivation layer; photoetching and corroding the thick silicon nitride passivation layer to form two chambers used as separating chambers of the temperature-sensing unit and the humidity-sensing unit; installing the temperature-sensing unit and the humidity-sensing unit in a corresponding separating chamber respectively; printing and installing a peripheral processing circuit; and finally packaging and the detecting the whole sensor. The top electrode, the bottom electrode, and the humidity-sensing film of the humidity-sensing unit all use comb-shaped structure. The use of the comb-shaped structure of the electrodes is advantageous in that the capacitance output value of the humidity-sensing unit can be increased. The use of the comb-shaped structure of the humidity-sensing film is advantageous in that the contact area between the film and air is enlarged such that time of water molecules entering and existing the humidity-sensing film is shortened and further the response speed of the sensor is increased. The temperature and humidity sensor is produced by using CMOS technology and has characteristics of microminiaturization and low power consumption.

The invention discloses an adsorbing agent based on a carbon nanomaterial. The adsorbing agent is prepared from the carbon nanomaterial and an adhesive, wherein the mass fraction of the carbon nanomaterial ranges from 30 to 95 percent. The specific surface area of the adsorbing agent is 100 to 2000m<2> / g, and the pore volume proportion of micropores, mesopores to macropores is (1 to 2) to (1 to 5) to (1 to 20). The invention also discloses a method for preparing the adsorbing agent by adding a pore-forming agent. The adsorbing agent has the advantages of long service life, big treatment capacity, low preparation cost and the like, and is suitable for adsorbing non-polar organic compounds in a fluid.