• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1. METHOD FOR CURRENT UZUSHKA by absorbing an aqueous solution of metal salts at the boiling point of the absorbent solution followed by regeneration of the moisture absorbent absorbent by evaporation, characterized in that, in order to reduce energy consumption, an aqueous solution of potassium acetate and / or sodium is used. carried out adiabatically in countercurrent, and the heat released during the regeneration stage is used to preheat the absorbent directed to the absorption stage. 2. A method according to claim 1, characterized in that an absorbent is used which contains 30% by weight sodium acetate and 70% by weight potassium acetate.
    公开号:SU1153812A3
    申请号:SU802903445
    申请日:1980-04-04
    公开日:1985-04-30
    发明作者:Хеллман Ларс-Гуннар
    申请人:Ларс-Гуннар,Хеллман (Фирма)；
    IPC主号:
    专利说明:

    : d Ud
    X) The invention relates to the drying of gases, in particular to the drying of air. A method of drying air by contacting it with a layer of adsorbent is known. At the same time, zeolites and silica gel ij are used as sorbent ad. The disadvantage of this method is that the reagent consumption is in the process of adsorbent regeneration. The closest to the invention to the technical essence and the achieved result is the method of air scaling by contacting it with an aqueous solution of lithium chloride on the Manters' packing located in the cooling tower, followed by separating the absorbed components and returning the concentrated solution to the contacting stage. The process is carried out at the boiling point of the solution. 2 The disadvantage of this method is the increased energy consumption required for the regeneration of the absorbent material. The purpose of the invention is to reduce energy consumption. The delivered chain is achieved by the method of drying the air by absorbing an aqueous solution of metal salts at the boiling point of an absorbent solution followed by pereHepaiyi saturated moisture absorbent by evaporation, in which an aqueous solution of potassium and / or sodium acetate is used as the absorbent solution in countercurrent, and the heat released during the regeneration stage is used to preheat the absorbent sent to the absorption stage. An absorbent containing 30% by weight of sodium acetate and 70% by weight of potassium acetate is used. This method allows to reduce the energy consumption from 0.872 to 0.253 MW / t of water, which saves energy consumption by 0.619 MW / t of water. Example. The timber to be dried is fed through a preheater to the dryer, where it is dried by countercurrent drying air. The air entering the dryer is heated to and has a relative humidity of 20%, and the moist air leaving the dryer has a temperature of 0 ° C and a relative humidity of 90%. The volume of circulating air per dry air is 91,000 kg / h. The drying air removes approximately 1000 kg of water per hour from the timber to be dried. Moist air leaving the dryer is supplied to an absorber where it is brought into contact with a counter-current of concentrated absorbing liquid. In this absorber, a liquid absorber captures moisture from the air during adiabatic drying. The adsorbing liquid is an aqueous solution of a mixture containing 30 wt.% Sodium acetate and 70 wt.% Potassium acetate. The concentration of salt in the concentrated absorbing liquid is 80% by weight, and the temperature is 188 ° C; its rate of supply to the absorber is 333 kg / h. In this absorber, said absorbent liquid is diluted to a salt concentration of about 20% by weight as a result of absorbing about 1000 kg of water per hour of air. The temperature of the diluted absorbent fluid leaving the absorber. The heat obtained from the condensation of water vapor is transferred to dry air with an increase in its temperature in the absorber before and at the same time lowering the relative humidity of the air to 20%. The dried air is recycled to the dryer. The concentration of the absorbing liquid diluted in the absorber is restored in a three-stage evaporator with a boiling point at its three stages 188, 125, 90С. The vapor supplied to the first stage of the evaporator has a temperature of 200 C. In the evaporator, the absorbing liquid acquires a salt concentration of 80% by weight, and the concentrated liquid with temperature is recirculated to the absorber. The vapor leaving the last evaporator stage is used to pre-heat the timber to be dried to a temperature close to the temperature of the wet material in the dryer. The energy consumed in the evaporation process is 0.253 MW / t.
    311538124,
    evaporated water. In view of the implementation of the use of this adiabatic adiabatic process, consumption can neither give a significant economic effect; energy in the drying process is approximately the effect due to a decrease in energy (per tonne of iodine removed). in the process of drying 75%.
    权利要求:
    Claims (2)
    [1]
    1. METHOD OF DRYING AIR by absorbing metal salts with an aqueous solution at the boiling point of the absorbing solution, followed by regeneration of the moisture-saturated absorbent by evaporation, characterized in that, in order to reduce energy consumption, an aqueous solution of potassium and / or sodium acetate is used as the absorbing solution, the process they are carried out adiabatically in countercurrent, and the heat released at the regeneration stage is used to heat the absorbent directed to the absorption stage.
    [2]
    2. The method of pop. 1, characterized in that use 1 absorbent containing 30 wt.% Sodium acetate and 70. MAEZ acetate ka-§ LIA.
    SU m , 1153812
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1153812A3|1985-04-30|Method of drying air
    SU786860A3|1980-12-07|Method of gas drying
    SE464853B|1991-06-24|PROCEDURE FOR DEHUMATING A GAS, SPECIAL AIR
    US4860548A|1989-08-29|Air conditioning process and apparatus therefor
    US4333917A|1982-06-08|Process of producing sulfuric acid
    US5024062A|1991-06-18|Multistage isothermal air dehumidification
    SU682119A3|1979-08-25|Method of removing sulphur dioxide from gases
    CN110508023A|2019-11-29|A kind of method for utilizing flue gas heat crystallize outside tower in flue gas desulfurization
    CN209576235U|2019-11-05|A kind of wet-method desulfurized fume dehumidification equipment
    CN204281489U|2015-04-22|A kind of waste water zero discharge device
    SU394071A1|1973-08-22|EZ G1
    CN109351136A|2019-02-19|A kind of wet-method desulfurized fume dehumanization method and equipment
    RU2050952C1|1995-12-27|Method for drying gases
    KR950004480Y1|1995-06-05|Dry apparatus with absorbing water
    JPS61230719A|1986-10-15|Dehumidifier
    SU660697A1|1979-05-05|Moist gas drying method
    RU2046642C1|1995-10-27|Gas drying method
    SU508572A1|1976-03-30|The method of heat recovery in the drying part of the paper machine
    SU14905A1|1930-04-30|Method of recovering volatile solvents held by solid absorbers
    RU2620793C1|2017-05-29|Adsorbent for sulfur dioxide
    SU92160A1|1950-11-30|The use of bauxite to absorb nitrogen oxides
    KR950017881A|1995-07-20|Method of removing water in chlorodifluoromethane
    Gandhidasan et al.1995|Application of Liquid Desiccant Technology
    JPS5518254A|1980-02-08|Improved wet desulfurization
    FR2405993A1|1979-05-11|Treatment of marcs contg. alcohol - comprises drying by conduction, condensn. of vapour from dryer and distn. of condensate, minimising energy requirements
    同族专利:
    公开号 | 公开日
    IT1128391B|1986-05-28|
    FR2452956B1|1987-02-13|
    FI73144C|1987-09-10|
    US4290208A|1981-09-22|
    FR2452956A1|1980-10-31|
    GB2047112B|1983-08-03|
    JPS55159824A|1980-12-12|
    DE3013025A1|1980-10-23|
    JPS643136B2|1989-01-19|
    FI801074A|1980-10-05|
    SE423448B|1982-05-03|
    SE7902979L|1980-10-05|
    DE3013025C2|1995-04-27|
    GB2047112A|1980-11-26|
    FI73144B|1987-05-29|
    CA1151400A|1983-08-09|
    IT8067522D0|1980-04-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE624842C|1933-12-24|1936-01-30|Kohlentechnik M B H Ges|Drying of gases|
    DE694721C|1937-09-07|1940-08-08|Dow Chemical Co|Dehumidification of gases|
    US2249624A|1939-07-26|1941-07-15|Dow Chemical Co|Method for drying|
    CA931070A|1968-10-24|1973-07-31|A. Hodgson Robert|Gas dehydration process|EP0160109B1|1980-06-19|1989-01-18|Sonnleitner, Ingolf|Absorption heat pump|
    SE450688B|1982-05-27|1987-07-20|Gunnar Svedberg Ab|SET AND EQUIPMENT FOR ASTADCOMMATING HEAT MEASUREMENT FROM HOT HUMID GAS|
    JPS6183426U|1984-11-02|1986-06-02|
    FI75401C|1986-11-07|1988-06-09|Ahlstroem Oy|Process for heat recovery in connection with a gas turbine process.|
    SE464853B|1988-08-01|1991-06-24|Ahlstroem Foeretagen|PROCEDURE FOR DEHUMATING A GAS, SPECIAL AIR|
    DE4007934A1|1990-03-13|1991-09-19|Christoph Kliesch|Hollow insulating zones - have absorption units to block condensation development which can be replaced and regenerated|
    GB2252738A|1991-02-14|1992-08-19|Mountain Breeze Ltd|Dehumidifier|
    FR2679988A1|1991-07-30|1993-02-05|Armines|Method for limiting the frostingof the refrigeration battery of an open refrigeration cabinet and cabinet employing this method|
    US6156102A|1998-11-10|2000-12-05|Fantom Technologies Inc.|Method and apparatus for recovering water from air|
    NL1020603C2|2002-05-15|2003-11-18|Tno|Process for drying a product using a regenerative adsorbent.|
    US7306654B2|2004-01-30|2007-12-11|Ronald King|Method and apparatus for recovering water from atmospheric air|
    ES2349096B1|2007-04-16|2011-12-12|Embega, S.Coop|DRYING METHOD|
    EP2582447A4|2010-06-17|2014-01-01|Tomas Aabyhammar|A method in treating solvent containing gas|
    EP2407230A1|2010-07-16|2012-01-18|Immoplan Technische Gebäudeausstattung|Method for sorption drying using potassium salts, device for performing the method and processing of the products from the method|
    DE102016212566A1|2016-06-29|2018-01-04|Siemens Aktiengesellschaft|Process and arrangement for obtaining water from a gas mixture by means of an absorption unit in combination with a thermal water recovery plant|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE7902979A|SE423448B|1979-04-04|1979-04-04|METHOD OF DRYING SOLID MATERIAL|
    [返回顶部]