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Low Temperature Sludge Dryer

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Low Temperature Waste Heat Sludge Dryer

Consultation

Product overview: Reuse the waste heat, for enery saving

Product features: 10% water content, >80% volume reduction; 1KWH:4.2KG(Electricity VS Water removal) Twice the industry standard; Odor free without deodorization; No heat loss, 100% heat use; Safe in low temperature condition, no raising dusts;

  • Low Temperature Waste Heat Sludge Dryer
  • prsoduct details
  • technical parameter

24-1

 

System Feature

 ≤10%Water content, Volume reduction80%

         Sludge volume further reduction, dry sludge water content ≤10%-50% adjustable, reduction80%

1:4.2 Electricity VS Water removal

          Innovative 4 effect Condensation dehumidification and drying technology, 1 KWH electricity can remove 4.2KG water

Odor free without deodorization

           The whole system adopts closed running design, no odor out, no need to install expensive deodorization system as a secondary investment. It can be directly installed in the plant for centralized disposal, and the condensate can be directly discharged without secondary treatment.

No heat loss, 100% heat use

           The system is combined with heat pump heat recovery technology, which has no heat loss and better working efficiency. It is different from the open drying method with continuous moisture removal and continuous high temperature heating.

Safe in low temperature condition, no raising dusts

           Fully closed 40-75 low temperature operation, no need for nitrogen filling operation, oxygen content in drying process is less than 12%, dust concentration is less than 60g / m3, particle temperature is less than 70 , no potential dust and explosion, discharge temperature is less than 50 , no need for secondary cooling, and it can be directly stored.

Low Temperature Sludge drying principle

This low-temperature drying system uses the principle of heat pump dehumidification to reduce the volume of the wet sludge on the mesh belt by the way of convection hot air drying. The whole system is fully closed design, and the drying hot air has no heat loss. 

1576829052506769[1]


Using the refrigeration system to cool and dehumidify the wet air from the drying chamber, and recover the latent heat of moisture condensation to reheat the dry air. It is the combination of dehumidification (dehumidification) and heat pump (energy recovery), and it is the recycling of energy in the drying process.

企业微信截图_1584593182743

Technical analysis

§  Application

     The dryer can directly dry wet sludge with water content of 83% to water content of 10% - 30%, with reduction up to 90%, effective sterilization 90%, low energy consumption, pollution-free, widely used in municipal sludge and industrial sludge (printing and dyeing, papermaking, electroplating, chemical industry, leather, pharmaceutical, etc.) In the later stage, the dry sludge can be treated by gasification, blending, composting or building materials. 

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§  Innovative Technology

      The 4 effect condensation dehumidification and drying technology is currently the most advanced sludge drying technology. It has obvious advantages such as lower air temperature, better drying capacity and efficiency, more economical operation cost, etc. The comprehensive dehumidification performance ratio is 4.2kg water removed by 1KWH electricity, which is twice the industry standard. 

1576829834757272[1]

  • Sludge handling process

1576831324153836[1]



Advantages of Low Temperature Sludge Dryer

Comparison-Middle Temp Belt Dryer

Item

Middle Temp Belt Dryer

Low Temp Belt Dryer

Sludge convey

Stainless steel mesh belt

Stainless steel mesh belt

Heat source

Coal, oil, anaerobic digested gas 

Hot water

Temp

110-150

40-75

Method

Steam, Hot air

Heat pump

Dehumidification

Open (dehumidification + condensation)

Closed condensation(no heat loss)

Shape

Extrusion, slitting, granulation

Extrusion, slitting,   granulation

Waste gas

Need expensive deodorization system

No

Cooling of outlet material

Need cooling

Direct

Consumption

Heat(2880K/kgH2O)

+Electricity(0.1 kwh/ kG H2O)

Electricity(025kwh/kgH2O)

Support

Complex, expensive

Simple, easy operation

 

Comparison-Traditional Sludge Dryer

Item

Rotary drum

Rotary Disc

Thin layer evaporator

Hollow paddle

Low Temp Belt Dryer

Drying Temp

200-300

>150

>150

>150

40-75

Method

Thermal convection

Heat conduction

Heat conduction

Heat conduction

Hot ait circle

Heat supply

Hot air, gas

Steam, heat oil

Steam

Steamheat oil

Heat pump

Raising dust

Extremely high

High

High

Extremely high

No

Security

High operation temp

High temp, nitrogen   required

High operation temp

High operation temp

Low temp

Waste gas

Need expensive deodorization

Need expensive deodorization

Need expensive deodorization

Need expensive deodorization

No

Heat consumption KJ/Kg water

3400

2800

2300

2800

No

Electricity consumption Kwh/kg water

0.7

0.5

0.53

0.4

0.25


Model

MYR5000

MYR10000

MYR15000

MYR20000

MYR25000

Water removal/24h

≈5000kg

≈10000kg

≈15OOOkg

≈20000kg

≈25000kg

Water removal/h

≈208kg

≈416kg

≈624kg

≈832kg

≈1040kg

Power

13kw

26kw

39kw

52kw

65kw

Standard Heat supply power

200kw

400kw

600kw

800kw

lOOOkw

Hot water flow(m³/h)

8.6

17.2

25.8

34.4

43

Standard cooling power

180kw

360kw

540kw

720kw

900kw

Cooling water flow△t=12℃

13m³/h

26m³/h

39m³/h

52m³/h

65m³/h

Heat exchange Module

1

2

3

4

5

Dimension (mm)

4560*3110*3200

7900*3110*3200

11150*3110*3200

14400*3110*3200

17650*3110*3200

Structure

Assembly

Assembly

Assembly

Assembly

Assembly

Weight(T)

5.7

8.6

12.3

14.8

16.5

Power

(220V\380V\440V)    /3H/50HZ (60Hz)

Standard drying temp

50~65℃/68-85℃

Heat source

Waste heat, steam, hot water

Standard heating

90℃/70℃(Hot water)

Cooling condition

33℃/45℃(Cooling water)

Control

Touch screen+PLC

Water content of dry sludge

10-50% adjustable

Shape method

Slitting or extruding

Model

MYR30000

MYR35000

MYR40000

MYR45000

MYR50000

Water removal/24h

≈30000kg

≈35000kg

≈4000kg

≈45000kg

≈50000kg

Water removal/h

≈1248kg

≈1458kg

≈1667kg

≈1875kg

≈2083kg

Power

78kw

91kw

104kw

117kw

130kw

Standard Heat supply power

1200kw

1400kw

1600kw

1800kw

2000kw

Hot water flow(m³/h)

51.6

60.2

68.8

77.4

86

Standard cooling(kw)

1080

1260

1440

1620

1800

Cooling flow△t=12℃m³/h

78

91

104

117

130

Heat exchange module

6

7

8

9

10

Dimension(mm)

20900*3110*3200

24150*3110*3200

27400*3110*3200

30650*3110*3200

33900*3110*3200

Structure

Assembly

Assembly

Assembly

Assembly

Assembly

Weight(T)

20.4

23.4

26.3

29.3

32.2

Power supply

(220V\380V\440V)    /3H/50HZ (60Hz)

Standard drying temp

50~65℃/68-85℃

Heat source

Waste heat, steam, hot water

Standard heat conditon

90℃/70℃(hot water)

Cooling condition

33℃/45℃(cooling water)

Control

Touch Screen+PLC

Outlet water content

10-50% adjustable

Shape

Slitting or extruding