Product Thermal Capacity: 1 - 20 t/h
Working Pressure: 0.7 - 2 Mpa
Available Fuel: Nature gas, coke oven gas, biogas, methanol, liquid propane gas, diesel, heavy oil, light oil, crude oil, etc.
Available Industries: Heat supplying, chemical, food, textile, printing and dyeing, cigarettes and tobacco, fodder, pharmacy, building materials, brewery, rubber, hospital etc.
WNS series horizontal internal combustion boiler is a boiler shell type 3 passes wetback oil/gas fired boiler. After fuel is being atomized by burner, flame is full of the wave furnace and transfer heat via furnace wall, this is 1st pass; the high temperature smoke is collected in reversal chamber and then enters 2nd pass which is grooved tubes bundle area; after heat convection, air temperature gradually falls and goes to front smoke box and turn to 3rd pass, which is smooth tubes bundle area, and then enters chimney passing back smoke box and exhausted to the atmosphere.
1. Digitized manufacture
The key part such as material cutting, rolling, drilling are proceeded by advanced CNC machining process to reduce the assemble stress and extend boiler working lifetime.
The front and back smoke chamber plates are cut by CNC plasma cutting machine and looks tidy and beautiful.
2.Easy operation and maintenance
Fully automatically operating, with automatically adjustment and protection of burning, water level, temperature and steam pressure.
3. Longer working life
Smoke tube and tube sheet connection is expanded first to eliminate the gap between them, then adopt automatic argon arc welding to relief the stress and expand boilers working life.
Longitudinal and girth joint adopt advanced automatic submerged-arc welding for good welding quality. All longitudinal and girth joint will have 100% radiographic inspection.
Fin tube us ND steel or stainless-steel material which avoid low temperature corrosion.
Inspection procedure point is set up to guarantee the sequence of expanding and welding, avoid cracking of the tube sheet holes.
4. Less fuel consumption
High quality aluminum silicate fiber is used with fire clay insulation, to control the boiler body temperature below 45℃ to control heat lost.
Sufficient steam storage room and heating area makes boiler to generate high quality steam and high thermal power.
Condenser is added to reuse the waste heat of the exhausted smoke to increase feeding water’s temperature and reduce emission temperature, which can increase the thermal efficiency above 98% and save operating cost.
Mar 20, 2019· Bitumen Loss on Heating Test. When the Bitumen is heated it loses the volatility and gets hardened. About 50gm of the sample is weighed and heated to a temperature of 1630C for 5 hours in a specified oven designed for this test.
The loss on heating test controls the volatility of a bitumen and determines the degree to which it may have been ‘cut’ by a low molecular weight flux. In addition, it was an early attempt to simulate the change in properties of a bitumen in an asphalt plant.
Bitumen Tests- Loss on heating Test When the bitumen is heated it loses the volatility and gets hardened. About 50 gm of the sample is weighed and heated to a temperature of 163 C for 5 hours in a specified oven designed for this test.
The loss in weight (exclusive of water) of bituminous materials when heated is called loss on heating of bituminous materials.
Testing of bitumen weight loss on heating. According to the thermal degradation of tar bitumen is a ratio of weight loss at 163 ° C for 5 hours, heating degree air-placed in the device. To test two samples tested, 50 grams of bitumen, 5.5 cm in diameter and a depth of …
CE 354 Transportation Engineering Sessional – I (Lab Manual) tests on bituminous materials, and Marshall Mix Design test, California Bearing Ratio (CBR) test. The procedures and standards are mentioned as per American Society for Testing and Materials If dried by heating, the period of drying
Aug 03, 2009· The sample specimen is weighed again after the heating period and loss in weight is expressed as percentage by weight of the original sample. Bitumen used in pavement mixes should not indicate more than 1% loss in weight, but for bitumen having penetration values 150-200 up to 2% loss in weight is allowed.
Author: Satyaprasad Oct 01, 2017· Bitumen is a bye product of crude oil. As a result it can loose some of its mass on heating. Not only that, Bitumen are normally mixed with an emulsifier before use so as to reduce their viscosity. Knowing how heat affects them becomes paramount.
The bitumen content of a bituminous material is measured by means of its solubility in carbon disulfide. Procedure for Solubility test on Bitumen In the standard test for bitumen content (ASTM D4), a small sample of about 2 g of the asphalt is dissolved in 100 ml of carbon disulfide and the solution is filtered through a filtering mat in a filtering crucible.
Loss on Heating Tests on Bitumen When the bitumen is heated, water content present in the bitumen is evaporated and bitumen becomes brittle which can be damaged easily. So, to know the amount of loss ness we will perform this test.
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