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Refrigerated Air Dryers Desiccant Air Compressors | Industrial Compressor Dryer Filter Solutions

Refrigerated Air Dryers — Desiccant Air Compressors | Industrial Compressor Dryer & Filter Solutions
The micro-heat combined dryer is a hybrid compressed-air drying solution that couples refrigerated pre-cooling and evaporation with adsorption (desiccant) drying, delivering low dew-point, condensate-free air with minimal regeneration gas consumption. It reduces refrigeration load by removing bulk moisture before the evaporator and uses heated dry air for fast, economical adsorbent regeneration, making it suitable for industrial processes that require stable, clean, and dry compressed air.

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Product Description

Detailed Description (key components & process)

  • Precooler — Incoming compressed air exchanges heat with hot, dry air discharged from the adsorption tower. This lowers the evaporator inlet temperature and warms the dry purge air, preventing downstream condensation.
  • Evaporator / Refrigeration Stage — The precooled air is refrigerated to approximately 5°C, condensing most of the water, oil and coarse impurities. Condensate is separated by a gas–water separator and removed via an automatic drainer.
  • Gas–Water Separator & Drainage — Condensed liquids (water/oil) are removed automatically, protecting downstream equipment and reducing filter load.
  • Adsorption Tower (Desiccant Stage) — Air leaving the evaporator is deeply dried by a desiccant bed using the pressure-swing adsorption principle until the required dew point is achieved.
  • Regeneration System (Micro-heat Regeneration) — Regeneration air is heated dry air drawn from the dryer outlet and heated further if needed. This enables shorter regeneration cycles with very low purge gas consumption, improving energy efficiency versus conventional heatless systems.
  • Closed-loop Heat Exchange — The dry hot air returning to the precooler recovers heat and raises the temperature of the outgoing dry air, which also helps prevent condensation in downstream piping.

Key Features & Benefits

  • Energy Efficient — Bulk moisture removed before refrigeration reduces evaporator load; micro-heat regeneration minimizes purge volume.
  • Low Dew Point Stability — Combined refrigeration + adsorption produces stable low dew points suitable for sensitive processes.
  • High Condensate Removal — Refrigeration condenses most liquid contaminants; effective separation protects filters and piping.
  • Reduced Maintenance — Automatic drain and staged separation lower downstream filter clogging and prolong component life.
  • Compact Integration — Hybrid design saves footprint compared with separate refrigerated and stand-alone desiccant plants.
  • Pipeline Protection — Heated dry air returned to the precooler raises line temperature and prevents in-line condensation.

Typical Applications

  • Food & beverage compressed-air systems
  • Instrument air and process control for chemical plants
  • Paint spray booths and finishing lines
  • Electronics manufacturing and cleanroom utilities
  • Pharmaceutical process air and packaging lines
  • Any installation requiring reliable low-dew-point air with energy sensitivity

Technical Specifications

  • Operating evaporator outlet temperature: ≈ 5°C (typical)
  • Regeneration method: micro-heat (heated purge from dryer outlet)
  • Regeneration gas consumption: very low (micro-heat design)
  • Typical achievable dew point: depends on design — from +3°C to −40°C equivalent dew point when combined with adsorption (specify per model)
  • Condensate removal: automatic electronic/mechanical drain with gas-water separator

Installation & Maintenance Notes

  • Ensure correct sizing for compressor flow and ambient conditions to meet target dew point.
  • Install adequate pre-filtration ahead of the dryer to remove oil and particulates and protect the evaporator and desiccant.
  • Schedule desiccant checks and periodic drain valve inspections; automatic drains should be validated on commissioning.
  • Provide a bypass or redundant dryer for continuous operation during service intervals (recommended for critical processes).

Product Names & Keywords

  • Refrigerated Compressed Air Dryer
  • Desiccant Air Dryer / Adsorption Dryer
  • Micro-Heat Combined Dryer
  • Refrigerated + Desiccant Hybrid Dryer
  • Industrial Compressor Dryer & Filter Solutions
  • Refrigerated Air Dryers Desiccant Air Compressors
  • Adsorption Tower, Precooler, Evaporator, Automatic Drainer

Additional Content — Selection Guide (how to choose)

  • Process dew point requirement — Choose refrigeration-only for moderate dew points; select combined or desiccant systems for sub-zero or critical control.
  • Operating costs — Evaluate energy use (refrigeration + regeneration purge). Micro-heat systems often lower operating cost vs. heatless desiccant dryers.
  • Ambient/plant conditions — High inlet temperatures or humid environments benefit from precooler staging.
  • Footprint & integration — Combined systems are more compact than separate units; check accessibility for maintenance.
  • Total cost of ownership — Consider filter life, condensate handling, and regeneration gas cost over lifecycle.

Comparison with Similar Products

Product Type Drying Principle Typical Dew Point Regeneration / Energy Use Condensate Handling Best For Pros / Cons
Refrigerated Dryer Cooling + condensation ≈ +3°C to +10°C Moderate energy (refrigeration); no purge Automatic drains; condensate removed at cold stage General industry air lines Pros: Low capex, simple. Cons: Not suitable for low dew point needs.
Desiccant (Heatless) Adsorption (PSA) −40°C to −70°C High purge gas consumption → higher operating cost Minimal condensate (pre-filtration needed) Critical low-dew applications Pros: Very low dew point. Cons: High operating cost due to purge.
Desiccant (Heated / Heated-Purge) Adsorption with heater −20°C to −70°C Lower purge than heatless; energy for heater Minimal condensate Low dew point with better efficiency Pros: Lower operating cost vs heatless. Cons: Requires heater control.
Micro-Heat Combined Dryer (this product) Precooler → Refrigeration → Adsorption (micro-heat regeneration) Stable low dew point (model dependent) Low purge (heated dry air reuse) + reduced refrigeration load Refrigeration condenses bulk; automatic drains Processes needing low dew point and energy efficiency Pros: Energy efficient, compact, stable dew point. Cons: More complex control; higher initial capex vs simple refrigerated units.
Membrane Dryer Selective gas permeation ≈ +3°C to −20°C (depends) Low power, no refrigerant Very low condensate (sensitive to liquid) Small flows, instrument air Pros: No moving parts. Cons: Limited flow, affected by oil/water.

Comparison Table Notes

  • Dew point ranges are typical and model dependent — confirm per manufacturer data sheet.
  • Energy consumption varies with inlet air temperature, pressure, and load; micro-heat combined designs generally reduce total energy versus heatless desiccant systems for the same dew-point performance.

Short Marketing Blurb

Hybrid Micro-Heat Dryer — Refrigerated + Desiccant Efficiency
A compact, energy-efficient dryer that combines refrigerated precooling and adsorption drying with micro-heat regeneration for low dew point, minimal purge use, and reliable condensate management — ideal for industrial processes demanding dry, oil-free compressed air.

Inlet pressure

 0.6~1.0Mpa

Outlet air pressure dew point

 -40~ -70℃

Pressure drop

 ≤0.05Mpa

Environmental temperature

 ≤32℃

Inlet air temperature

 ≤45℃

Purge air volume

 3~5%

Model DM15ZH DM26ZH DM40ZH DM65ZH DM85ZH DM110ZH DM130ZH DM150ZH DM200ZH DM300ZH DM400ZH DM500ZH DM600ZH DM800ZH DM1000ZH DM1200ZH DM1500ZH DM2000ZH
Capacity (Nm3/min) 1.5 2.6 3.8 6.5 8.5 11 13 17 23 33 45 55 65 85 110 130 150 200
Air connection ZG1” ZG1” ZG1½" ZG1½" ZG2" DN50 DN50 DN80 DN80 DN80 DN100 DN125 DN125 DN125 DN150 DN150 DN150 DN200
Compressor power (HP) 0.65 0.75 1.25 1.5 1.5 3 3 4 5 7.5 10.5 12.5 15 20 25 25 40 50
Cooling water circulation rate forced air cooling 3 3 3.5 6 7.4 8 10 12 14 16 18 24.4
Voltage (V/Hz) 220/50 or 380/50 380/50
Net weight (Kg) 295 350 485 655 800 930 1100 1200 1220 1460 1980 2500 2950 3550 4200 4500 7690 8900
Dimensions(mm) Length 980 980 1200 1200 1460 1460 1680 1800 1830 1650 2480 2580 2750 2900 2690 3000 3200 3000
Width 750 800 1000 1000 1100 1180 1180 1240 1950 2000 1830 1980 2080 2560 2600 2800 2950 2800
Height 1453 1653 1535 1994 1960 2065 2140 2100 2150 2480 2717 2750 2680 2920 2960 3000 3000 3200

Construction Cases

Dalian Dahua Group Co., Ltd.

Dalian Dahua Group Co., Ltd.

A large-scale electronic new material company in Jiangsu (Fortune 500)

A large-scale electronic new material company in Jiangsu (Fortune 500)

Shenyang Engine Research Institute

Shenyang Engine Research Institute

A large optoelectronics factory in Jiangsu

A large optoelectronics factory in Jiangsu

Hainan Haikou Airport

Hainan Haikou Airport

Equipment of a military factory in Shanghai

Equipment of a military factory in Shanghai

PetroChina offshore drilling platform

PetroChina offshore drilling platform

A chemical company in Shandong

A chemical company in Shandong

A company in California, USA

A company in California, USA

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Demargo (Shanghai) Energy Saving Technology Co., Ltd.

About Us

Demargo (Shanghai) Energy Saving Technology Co., Ltd. actively participates in and promotes the development of the compressed air industry. It specializes in manufacturing and producing compressed air purification equipment. So far, it has passed a number of product patents, QS certification, and ISO9001 quality system certification. It has obtained national high-tech and specialized enterprises, providing users with high-quality products and the most complete pre-sales and after-sales services.

Demargo (Shanghai) Energy Saving Technology Co., Ltd. is China Wholesale Refrigerated Air Dryers Desiccant Air Compressors | Industrial Compressor Dryer Filter Solutions Manufacturers and Refrigerated Air Dryers Desiccant Air Compressors | Industrial Compressor Dryer Filter Solutions Suppliers. It's products include refrigerated dryers, adsorption dryers, combined dryers, compression heat regeneration adsorption dryers and filters, zero air consumption blast heat dryers, self-cleaning air filters, compressed air pre-cooling units, low-temperature and high-pressure nitrogen pre-cooling units, industrial chillers, oil-water separators, high-efficiency oil removers, aftercoolers and other specifications. According to user needs, it can provide compressed air purification equipment with various types and characteristics such as air cooling, water cooling, standard, fluorine-free, high temperature, instrumentation, single-chip microcomputer, programmable, industrial computer, frequency conversion control, high pressure, explosion-proof, etc. Product dew point range. -23℃~-70℃, processing capacity: 1~500Nm3/min, export oil content: 10PPM~0.003PPM. Export dust particle size: 3um~0.01 um.

Demargo (Shanghai) Energy Saving Technology Co., Ltd. has strong product research, design and development capabilities. On the basis of digesting and absorbing advanced technologies at home and abroad, combined with the actual working conditions in China, the successfully developed Demargo brand air purification equipment is the best suction filtration and post-processing purification equipment for various oil-free and oil-free air compressors. The products are widely used in power, shipbuilding, aerospace, electronics, metallurgy, machinery, automobile manufacturing, petroleum, chemical industry, textile, chemical fiber, light industry, papermaking, rubber, instrumentation, food, air separation, cigarettes, medicine, biology, daily chemicals, and other industries. They are sold well in more than 30 provinces and cities across the country and play an active role in key national projects. The products have been exported to Brazil, Australia, Iran, India, Sudan, Indonesia, Vietnam, Saudi Arabia and other Southeast Asia, the Middle East and Central Asia, and Africa.

The company takes "sincere dedication and pursuit of excellence" as its corporate spirit, and achieves the goal of developing the business through technology, quality and service with advanced product design, comprehensive quality assurance and a fast pre-sales and after-sales service network. We offer Refrigerated Air Dryers Desiccant Air Compressors | Industrial Compressor Dryer Filter Solutions for sale.

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  • CTC Quality Management System
  • Specialized New Certificate
  • High-Tech Enterprise Certificate
  • Computer Software Copyright Registration Certificate
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