Explain the factors involved in designing kettle type reboiler?

952

how can I find out a sulfuric acid recovery plant disigner?

2432

How can I treat a waste stream containing both hexavalent chromium and arsenic?

1064

i am a prefinal year student of polymer engineering .could you please send the latest question papers regarding entrace exam.

2205

Why is a vacuum breaker used on shell and tube heat exchangers that are utilizing steam as the heating utility?

1174

What is screen analysis and what are its applications in the chemical industry?

1154

Given, T1=600C, constant temperature of wall 800 , length of wit exchanger L=3m, dia=25 mm, Cp=14.91 KJ/kg.K, density ρ=914 kg/m3,mean velocity vm= 2 m/s, film heat transfer coefficient hf=72 Kcal/h.m2.K, what is the outlet temperature?

1959

X is strong but has a very low density (1% of traditional earth materials.) and hence light weight. It is a recyclable material. The compression behaviour of X is strain rate dependent. Higher strain rates result in higher initial modulus and higher compression strength. It can also withstand unlimited number of cycling loading provided the repetitive loads are kept below 80% of the compressive strength. The internal structure of the material includes air-traps which make it poor heat conductor. X is non- biodegradable and chemically inert in both soil and water. Most acids and their water solutions do not attack it; however strong oxidizing acids do. Solvents which attack X include esters, ketones, ethers, aromatic and aliphatic hydrocarbons and their emulsions, among others. It does not support bacterial/fungal growth as well .It also has significant acoustic properties and effectively reduces the transmission of airborne sound. X is combustible and should not be exposed to open flame or other ignition sources. Combustion products are carbon monoxide, carbon dioxide, water and soot. Long-term exposure to sunlight causes yellowing and a slight embrittlement of the surface due to ultraviolet light. X is able to withstand the rigours of temperature cycling, assuring long-term performance.

1885

What chemical is used to expand air bags in such a short amount of time?

1115

What information is needed to specify a mixer?

1088

What is fuel requirement of 20kg/hr of incineration having material calorific value 6500 kcal/kg and diesel calorific value 10707 Kcal/Kg (PCC=850 degC and SCC 1050 Deg c)

1685

Define a solvent?

1179

Explain the common failure mechanism for above ground atmospheric storage tanks?

1015

What are some common methods for helium leak testing a vacuum system?

1104

I want to know that what type of questions may be come for fertilizer company for written exam?

2133