- What is the difference between thermal and catalytic cracking?
- What are the two sections of the fluid catalytic cracking process?
- What does thermal cracking mean?
- What does catalytic cracking produce?
- What are the types of cracking?
- What are the 2 products of cracking?
- Does thermal cracking use a catalyst?
- Which catalyst is used in hydrodesulfurization?
- What is mean by cracking?
- What type of reaction is cracking an example of?
- Why is broken porcelain used in cracking?
- What are the advantages of catalytic cracking?
- Why is cracking important?
- For what purpose is catalytic cracking preferred than thermal cracking?
- What are the conditions needed for cracking?
- What factors make a good fuel?
What is the difference between thermal and catalytic cracking?
The main difference between thermal cracking and catalytic cracking is that thermal cracking uses heat energy for the breakdown of compounds whereas catalytic cracking involves a catalyst to obtain products..
What are the two sections of the fluid catalytic cracking process?
What are the two sections of the fluid catalytic cracking process? Explanation: Reactor is used for cracking process and regenerator for regeneration of catalyst. 5. How is the circulation regulated between the reactor and regenerator in FCC?
What does thermal cracking mean?
visbreakingThermal cracking, also known as visbreaking, is an older process that capitalizes on heat and pressure to break large hydrocarbon molecules into smaller, light molecules. The more-modern and more-efficient technology is catalytic cracking.
What does catalytic cracking produce?
Fluid catalytic cracking produces a high yield of petrol and LPG, while hydrocracking is a major source of jet fuel, Diesel fuel, naphtha, and again yields LPG.
What are the types of cracking?
Ans. Cracking is primarily of two types – thermal cracking and catalytic cracking. Thermal cracking is further categorised into modern thermal cracking and steam cracking. On the other hand, sub-classifications of catalytic methods of cracking are hydrocracking and fluid catalytic cracking.
What are the 2 products of cracking?
The cracking products, such as ethene, propene, buta-1,3-diene and C4 alkenes, are used to make many important chemicals. Others such as branched and cyclic alkanes are added to the gasoline fraction obtained from the distillation of crude oil to enhance the octane rating.
Does thermal cracking use a catalyst?
Cracking is the name given to breaking up large hydrocarbon molecules into smaller and more useful bits. This is achieved by using high pressures and temperatures without a catalyst, or lower temperatures and pressures in the presence of a catalyst.
Which catalyst is used in hydrodesulfurization?
Ruthenium disulfide (RuS2) appears to be the single most active catalyst, but binary combinations of cobalt and molybdenum are also highly active. In practice, most HDS units in petroleum refineries use catalysts based on cobalt-modified molybdenum disulfide (MoS2) together with smaller amounts of other metals.
What is mean by cracking?
cracking. Definition of cracking (Entry 3 of 3) 1 : a process in which relatively heavy hydrocarbons are broken up by heat into lighter products (such as gasoline)
What type of reaction is cracking an example of?
thermal decomposition chemical reactionCracking is an example of a thermal decomposition chemical reaction.
Why is broken porcelain used in cracking?
As the porcelain chips are heated the vapour from the paraffin is ‘cracked’, or broken down into smaller hydrocarbons. … Cracking them into smaller hydrocarbons makes them easier to use.
What are the advantages of catalytic cracking?
The products of catalytic cracking have a number of advantages over the products from thermal cracking processes: (1) the naphtha has a higher octane number than coker naphtha due to the presence of iso-paraffin constituents and aromatic constituents, and (2) the naphtha has greater chemical stability than mono-olefins …
Why is cracking important?
Cracking, in petroleum refining, the process by which heavy hydrocarbon molecules are broken up into lighter molecules by means of heat and usually pressure and sometimes catalysts. Cracking is the most important process for the commercial production of gasoline and diesel fuel.
For what purpose is catalytic cracking preferred than thermal cracking?
Catalytic cracking yields a higher quantity of branched-chain, unsaturated, aromatic hydrocarbons as compared to thermal cracking. Catalytic cracking is a better-controlled process than thermal cracking.
What are the conditions needed for cracking?
CrackingThermal cracking uses harsh conditions like high temperature and high pressure.It breaks the alkanes into a high percentage of alkenes and comparatively few alkanes.Thermal cracking is done at about 1,000 degrees Celcius and 70 atm pressure.
What factors make a good fuel?
A good fuel should have the following characteristics.It should be easily available. … It should be cheap.It should have a high calorific value.It should have a low ignition point, which is not lower than room temperature (so that it does not catch fire at room temperature).It should not burn too fast or too slowly.More items…