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Process for the regeneration of a desiccant

For the regeneration of a liquid desiccant, a stripping agent is used which is liquid at ambient temperature and pressure, and forms a heteroazeotrope with water, along with the following steps: (a) distillation of the water-laden liquid desiccant to form vapor and partially regenerated liquid desiccant; (b) reboil partially regenerated liquid desiccant; (c) stripping of partially regenerated liquid desiccant during (a) and (b), using vaporized stripping agent; (d) a condensing of vapor the exiting the distillation, the condensation producing two liquid phases, one mainly water and the other mainly stripping agent; (e) heating the stripping agent-rich liquid phase exiting step (d) to generate a vapor phase which is richer in water than said liquid phase and a water-depleted liquid phase; and (f) returning the vaporized liquid phase exiting step (e) to step (c).

Desiccant-coated substrate and method of manufacture

Desiccant-coated substrates, regeneratable rotary dehumidification wheels and other devices for gas (e.g., air) treatment using those substrates, and processes for making them are disclosed. The substrates may have coatings in thicknesses of from about 2 to about 10 mils containing particles of one or more adsorbent desiccants and an organic water-based binder. The desiccant particles retain a high fraction of their original adsorption capacity because the pores of the desiccant particles contain a pore-clearing agent prior to the binder setting and the pore-clearing agent leaves the pores during the manufacturing process to prevent the binder from blocking the pores. In preferred embodiments a mixture of different desiccants is used and a particle suspending agent keeps the particles well-mixed so that the desiccant particles in the coated substrate will be as well-mixed as possible. The suspending agent may also function as the pore-clearing agent. A pH-adjusting agent may be used to control the pH of the coating if the binder or another constituent of the coating is pH-sensitive.

Hi-performance desiccant tower

The invention resides in a process air dryer system for plastics processing machines and method for drying process air comprising two desiccant towers repeatedly alternating between process and regeneration cycles. In addition to conventional bottom heaters, each tower has an additional generally central heater so as to reduce the time required to regenerate saturated desiccant. When a tower is undergoing regeneration of its desiccant, generally centrally heaters aid conventional bottom heaters in drying saturated desiccant so as to reduce conventional regeneration cycle time by as much as 25% to 30%.

Hybrid heat pump and desiccant space conditioning system and control method

An energy-efficient space conditioning system comprising an integrated direct expansion heat pump with desiccant and thermal exchange wheels. A method is disclosed for controlling the system to have four distinct modes of operation: Heating, Cooling/Regneration, Coil Defrost, and Regeneration.


Heater device for desiccant rotor dehumidifier
Desiccant bag with integrated filter and method of making same
Desiccant device and humidity measuring means
Process for the regeneration of a desiccant
Regenerative desiccant bundle
Desiccant dehumidification system
Desiccant structures for OLED displays


PAT. NO. Title
151 5501776 Process for the regeneration of a desiccant
152 5496397 Desiccant-coated substrate and method of manufacture
153 5485686 Hi-performance desiccant tower
154 5471852 Polymer enhanced glycol desiccant heat-pipe air dehumidifier preconditioning system
155 5460004 Desiccant cooling system with evaporative cooling
156 5453897 Information storage cartridge containing desiccant material
157 5448895 Hybrid heat pump and desiccant space conditioning system and control method
158 5436040 Sealant strip incorporating an impregnated desiccant
159 5429665 Apparatus for introducing microwave energy to desiccant for regenerating the same and method for using the same
160 5423129 Desiccant cartridge of an air dryer
161 5422187 Vapor phase corrosion inhibitor-desiccant material
162 5401706 Desiccant-coated substrate and method of manufacture
163 5393457 Vapor phase corrosion inhibitor-desiccant material
164 5373704 Desiccant dehumidifier
165 5353606 Desiccant multi-fuel hot air/water air conditioning unit
166 5351497 Low-flow internally-cooled liquid-desiccant absorber
167 5346645 Desiccant composition and a method of desiccating articles
168 5344589 Vapor phase corrosion inhibitor-desiccant material
169 5332525 Vapor phase corrosion inhibitor-desiccant material
170 5327739 Desiccant adsorption air conditioner for automobiles
171 5325676 Desiccant assisted multi-use air pre-conditioner unit with system heat recovery capability
172 5320778 Vapor phase corrosion inhibitor-desiccant material
173 5301439 Desiccant rotor of a dehumidifier
174 5300138 Langmuir moderate type 1 desiccant mixture for air treatment
175 5297398 Polymer desiccant and system for dehumidified air conditioning
176 5286282 Continuous flow air dryer with double helix split desiccant bed
177 5253683 Method and apparatus for dispensing desiccant materials into window spacer frames
178 5213154 Liquid desiccant regeneration system
179 5191771 Polymer desiccant and system for dehumidified air conditioning
180 5191721 Microwave regenerable desiccant cartridge
181 5177982 Accumulator desiccant bag retaining clip
182 5176005 Method of conditioning air with a multiple staged desiccant based system
183 5173286 Fixation of elemental mercury present in spent molecular sieve desiccant for disposal
184 5170633 Desiccant based air conditioning system
185 5168930 Desiccant for well acidizing process
186 5137747 Desiccant powder, its use for the drying of solid substrates, in particular grains or seeds
187 5129925 Liquid desiccant regeneration system
188 5116393 Absorber for dehydrating gas with liquid desiccant
189 5114003 Tablet vial with desiccant in bottom
190 5097668 Energy reuse regenerator for liquid desiccant air conditioners
191 5052188 Desiccant materials for use in gas fired cooling and dehumidification equipment
192 5018368 Multi-staged desiccant refrigeration device
193 4999034 Desiccant cartridge
194 4999033 Integrally valved, low friction indexing desiccant bed dehumidifier
195 4996196 Novel desiccant and dehydration therewith
196 4984434 Hybrid vapor-compression/liquid desiccant air conditioner
197 4948392 Heat input for thermal regenerative desiccant systems
198 4947957 Regenerable desiccant cartridge for automotive muffler
199 4941324 Hybrid vapor-compression/liquid desiccant air conditioner
200 4939906 Multi-stage boiler/regenerator for liquid desiccant dehumidifiers


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