pre-heater

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1.Product Description:

Pre-heater is a high-efficient heat exchanging equipment used in alcohol, solvent, foodferment, pharmaceutical, petrochemical, refrigeration, organic chemistry, metallurgicalindustry, suitable for convection heat transfer of liquidtoliquid,gas to gas,gas to liquid.

The heatexchangeris divided into tubular heat exchanger, spiral plate heat exchanger.And the tubular heat exchanger comprises condenser, Pre-heater, Re-boiler,Evaporator, drying machine. The spiral plate heat exchanger comprisesnon-dismountable and dismountable exchanger.

The heatexchanger is made of carbon steel and stainless steel.

2.New Technology Description:

Five-ColumnThree-Effect Distillation Process

Our company designs and manufactures latest Five-Column Three-Effect Distillation equipment.This new process is promoted on the basisof traditional five-column differential-pressure column and mainly used forsuper-fine alcohol production.

The key of this process is the heatingmethods,the steam heats one column directly andtransfers theheat to other 4 columnsto achieve three-effect thermal couplingand energy-saving effects.

In terms of electricityefficiency, it can save 50% electricity and avoid the repairing ofcirculating pumps and also extend the working life of there-boilers.

Energy Consumption & Quality Indicator Table forSuper-fine Alcohol

No.

Item

Unit

Traditional Process

New Process

1

耗汽量Steam Consumption

t/t

3.0

2.3

2

色度Colority

No.

9.5

8

3

乙醇 Alcohol

%v/v

95.5

96.5

4

硫酸试验Sulfuric Acid Test

No.

70

9

5

醛(以乙醛计)Aldehyde (as acetaldehyde)

mg/l

28

2

6

甲醇Methanol

mg/l

18

3

7

正丙醇n-propyl alcohol

mg/l

15

2

8

异丁醇+异戊醇Isobutanol+isoamylol

g/l

27.5

2

9

酸(以乙酸计)Acid(as acetic acid)

mg/l

19

9

10

脂(乙酸乙酯)Ester (as acetic ether)

mg/l

22

16

11

不挥发物Nonvolatile matter

mg/l

23

12

12

重金属(以Pb计)Heavy metal

mg/l

0.65

0.4

13

氰化物(以Hcn计)Cyanide(as HCN)

mg/l

3.7

2

Double-Mash-Column Three-Effect Distillation Process

This process applies to the production ofgeneral-grade alcohol& fuel ethanol, and it was awarded Chinese nationalpatent, it is the onlysuccessfulapplicationof doublemash column & three-effect in the world,whichproduces general-grade alcohol.

This process is composed by mash column,rectification column and composite column. The composite column functions asmash column and rectification column.

The key of this process is the heatingmethods: the steam heats one column directly andtransfers the heat to other 2 columns to achieve three-effect thermal couplingand energy-saving effects.

The advantage of this process is energy-saving;it saves over 40% steam

Energy Consumption & Quality Indicator Table for General-Grade Alcohol

No.

Item

Unit

Traditional  Process

New Process

1

耗电量Electricity  Consumption

kwh/t

15

20

2

耗汽量Steam  Consumption

t/t

2.3

1.4

3

耗水量Water  Consumption

t/t

7

5

4

色度Colority

No.

9.5

8

5

乙醇 Alcohol

%v/v

95.5

95.5

6

硫酸试验Sulfuric Acid  Test

No.

70

55

7

Aldehyde (as acetaldehyde)

mg/l

28

25

8

甲醇Methanol

mg/l

100

55

9

正丙醇n-propyl alcohol

mg/l

75

35

10

异丁醇+异戊醇Isobutanol+isoamylol

mg/l

27.5

26

11

酸(以乙酸计)Acid(as acetic acid)

mg/l

19

18

12

脂(乙酸乙酯)Ester (as acetic ether)

mg/l

22

20

13

不挥发物Nonvolatile matter

mg/l

23

21

14

重金属(以Pb计)Heavy metal

mg/l

0.65

0.5

15

氰化物(以Hcn计)Cyanide(as HCN)

mg/l

3.7

3

3. Production Capability

1.       Our company was established in the 1950s,designed and manufactured the first stainlesssteel distillation column in China.

2.       Our company can produce 6 full sets of equipment (including crushing section, liquefying saccharification section, fermentation section, distillation section and DDGSsection) in a

month.

3.       Among 16 production workshops,3 workshops arefor mechanic manufacture, 5 workshops arefor manufacturing process, 8 workshopsare for assembling & welding.

4.       We own advanced machining equipment and producttesting equipment.

4. Designed capability

1). We own Design License of SpecialEquipment D1 & D2 Class; Manufacture License of Special Equipment A2 Class;Design License of Special Equipment GC

Class.

2).Our company achieves more than 20 patentcertificates on distillation, DDGS, and other fields.

3). Ourcompany owns ASME certification, ISO 9001 Quality System Certification, ISO14001 Environmental Management System Certification & GB/T28001Occupational Health and Safety Management System Certification

5. After-sales Service

1).Our company can provide a sophisticatedproduct after-sale service and can ensure the implementation, maintenance andcommission of projects.

2).We can reach the project site after receiving the user’s notification.

6.Package & Transport

Q:What is the function of the secondary heat exchanger in a 90% efficient furnace?
to recapture excess heat that would normally go up the chimney
Q:Spent steam from an electric generating plant leaves the turbines at 120.0°C and is cooled to 90.0°C liquid water by water from a cooling tower in a heat exchanger. How much heat is removed by the cooling tower water for each kg of spent steam?I'm not sure how to do this one please help!!
To solve this problem, we use two simple equations concerning heat: Q=mc?T expresses the amount of heat needed to change an object from one temperature to another, where Q is the amount of heat, m is the mass of the material, c is the specific heat of the material, and ?T is the change in temperature (measured in °C or K--see comment below). You'll use this equation first for steam as it is cooled from 120 °C to 100 °C, then for water as it is cooled from 100 °C to 90 °C. However, at 100 °C, both steam and water exist. Here the water is vaporized to steam, or vice versa. We express the heat needed to convert water to steam: Q = m*L, where m is the mass of water converted to steam, and L is the latent heat of vaporization for water/steam. In this case, however, Q will be negative, as heat will be released in the cooling from steam to water. Sum all of these heats together and you'll get the total heat change of the system. This should be a negative number, as heat is released in all three heat calculations. Figures: Specific heat of water: 4186 [J/(kg °C)] or [J/(kg K)] Specific heat of steam: 2010 [J/(kg °C)] or [J/(kg K)] Latent heat of vaporization for water/steam: 2.26 x 10^6 [J/kg] The change in temperature can actually be expressed in either °C or K. Since Celsius and Kelvin use the same scale and differ only by a constant, and since we're taking the difference when we calculate ?T, it doesn't matter which of the two temperature scales you choose.
Q:I have a Bryant furnace (in my condo) that is about 30 years old. The hvac guy who does my AC told me (before looking) that the heat exchanger is probably rusted out and that they don't make them any more. I had him over for a clean and check and he showed me a mound of accumulated rust under the heat exchanger when he opened it. He said pushing the brush in to clean it would probably poke a hole in the heat exchanger and recommended a new furnace. Coincidentally, he is running a special on Goodman GMT GDS80453AX furnaces for 1750.00 installed with a 10 year labor warranty. Is this guy just trying to make a buck off me or should I believe him?
He is probably telling you the truth. However, buy a brand name furnace or maybe a heat pump that will do the ac and heat. Not sure that I would only go with the guy who came out, I would get a few quotes, a little competition never hurt anyone. At 30 years you got your moneys worth.
Q:I need the regulatory / engineering definition of a double wall heat exchanger. Is air required to distinguish one wall from the other or can it be oil, water etc? I am in Idaho but any state or federal regulation links will be helpful.
There are several different types of double wall heat exchangers depending upon if you are dealing with Plate and Frame exchangers or with Shell and Tube exchangers, and also if you are dealing with hazardous materials, or if you are just trying to avoid mixing of the liquid streams if there should be a leak. Your best bet would be to call a few heat exchanger manufacturers and discuss the double wall concept with them.
Q:I am thinking for next winter about possibly using space heaters. Or even an electric fireplace which would be both pleasing to the eye and warm. I live in New England.
Make sure you have all new replacement widows and doors. You can also add more insulation in the attic, and have some blown into the walls. This will help tremendously. I have oil, and i used very little compared to most people I know. It is all about being energy efficient.
Q:What does it involve, besides the obvious. Thanks
Depends on what you get into. You could install HVAC equipment on new construction, retrofit older buildings with new HVAC equipment, be a HVAC service mechanic. It really should be HVACR where R is refrigeration. It technically is the same theory just at a lower space temp. In that case you might specialize in store refrigeration instead of comfort cooling/heating. Once again... Install, retrofit, service mechanic. There is always going to be some cross over between the different areas but depending on what type of company you end up working for you will more than likely end up working specifically in that area of the trade. The trade for the lack of a better comparison is solely based off the laws of thermodynamics; take heat energy from one area and put it in another area. When it comes to HVACR consider it this way; anything that moves, cools, or heats a 'medium' for the express purpose of conditioning the temperature/humidity of a space or substance you will likely deal with at some point in time. This includes but isn't limited to air conditioners, chillers, boilers, heat pumps, hydronic systems and piping systems, pumps, heat exchangers, fan coil units, exhaust fans, humidifiers, refrigerators, freezers, cooling towers, cascading systems, brine systems, and did I happen to mention air conditioners. Personally I started out in comfort cooling as a service mechanic. I saw lots of routine maintenance with very little service or trouble calls. It was pretty limited to heating and air conditioning. As I gained more experience and schooling I was allowed to go on more service calls. The more service calls I went on, the more I saw different types of systems. I think service calls are more the way to go, they keep your mind focused on the work trying to figure the problem out rather than just going through the motions of installing or performing routine maintenance. It makes the day go by a lot faster it seems, at least for me it does.
Q:If I have, say a gallon or two of warm water, is there a way to transfer that heat into an ounce of boiling water? (With heat syncs or something?)
No, not without some complicated set up that would make you question why you just didnt heat up the tiny bit of water on its own as opposed to building a complicated setup. What are you trying to do?
Q:What is the top aspects that decide the design of Heat Recovery Steam Generator commercially?
Visit okorder /
Q:How can I calculate the area of the shell and tube heat exchanger? Assuming I know the length,number of tubes, inner and outer diameters.Is this correct?A=(pi*r^2)/4-(no.tubes*(pi*r^2)/4)Thanks Many thanks
you have one medium in the tubes and the other in the shell . As I see it the area between them can be defined as A = PI x D (circumference) x L(length) x N(no of tubes) one medium sees an area of tube surface where D is the outside diameter other medium sees an area of tube surface where D is the inside diameter there is a third heat transfer defined by A = PI x (D1+D2)/2 (avg circumference) * (D1-D2)/2(wall thickness) x L(length) x N(no of tubes)
Q:My home has central air conditioning which is good and works fine. It does not have duct work to cool or heat the attached 2car garage. We would like to have a heat exchanger (similar to those used in motel rooms) installed in the outside wall at the back of the garage. Before contacting a contractor, we want advice on what we should ask for, in terms of type (plate or tube). Any other advice will be welcome
You'll want to see if the attached garage has the exterior walls insulated. You may want to consider having that done as well with the install to prevent unwanted heat loss and gains. Additionally depending on the total size of the 2 car garage you may have difficulty finding a 120 volt rated unit that is sized to serve the space. You'll likely need to have an extra breaker space dedicated at 240 volts in the panel, make sure you have room for that and that you won't have to upgrade your panel for it. As far as the AC goes I would suggest installing a unit that utilizes a fin tube heat exchanger. If you get one that utilizes a plate heat exchanger the potential for it to plug up restricting air flow is greatly increased considering the application of being installed for residential use. You likely won't find a self contained unit that utilizes this type of heat exchanger either.

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