Refinery

Shopping on line can be easy, simple and save you lots of money. It can also take a lot of your time, frustrate you, and result in unwanted purchases. Now the same can be said for regular high street shopping, but with the vast opportunity presented by the Internet it will pay you to spend a few minutes reading this and understanding how to better optimize your Refinery shopping experience:

1. Compare - without doubt the biggest advantage that the Refinery offers shoppers today is the ability to compare thousands of Refinery at a time. This is a great thing, but not necessarily all the time! Too much can be daunting at times so take advantage of the great comparison sites and where possible let them do the hard work for you.

2. Research - if it has been said it will be on the internet. Ignorance is no longer a justifiable reason for buying the wrong thing. Take the time to research in detail everything that you could possible want to know about

3. Testimonials - don't know anybody that has bought a Refinery? Wrong! If the Refinery is good the internet will let you know. Use the Internet as a friend and get testimonials before you buy.

4. Questions - Got a question about Refinery then search the Forums, FAQ's, Blogs etc. Don't be afraid to ask .....

5. Reputation - Never heard of the company selling Refinery? Don't worry, no reason why you should know every company in the world, but you know someone that does! Use the internet to find out what people are saying about Refinery and build up a picture of their reputation for sales, returns, customer service, delivery etc.

6. Returns - still worried that even after all of the above your Refinery wont be what you want? Check out the returns policy. There is so much competition now that someone, somewhere is bound to offer the terms that you are comfortable with.

7. Feedback - happy with your Refinery then let people know, after all you are depending on others people input in your buying decision, so why not give a little back.

8. Security - check for the yellow padlock on the Refinery site before you buy, and the s after http:/ /i.e. https:// = a secure site

9. Contact - got a question about Refinery, or want to leave a comment then check out the sites contact page. Reputable companies have them and respond.

10. Payment - ready to pay for your Refinery, then use your credit card or PayPal! Be aware of companies that don't accept them, there may be genuine reasons but given the huge amount of choice you have when buying online there is no reason at all not to buy via credit card or PayPal.

A refinery is composed of a group of chemical engineering Unit processing and unit operations used for refining certain materials or converting materials into products of value.

Types of refineries The various types of refineries include:

Oil refinery: Converts petroleum crude oil into Octane rating motor fuel (gasoline/petrol), diesel oil, liquefied petroleum gases (LPG), jet aircraft fuel, kerosene, heating fuel oils, lubricating oils, asphalt and petroleum coke.
Sugarcane: Converts sugar cane and sugar beets into crystallized sugar and sugar syrups.
Natural gas processing plant: Purifies and converts raw natural gas into residential, commercial and industrial fuel gas, and also recovers natural gas liquids (NGL)such as ethane, propane, butanes and pentanes.
Newark, California#Economic: Cleans salt (NaCl), produced by the Sodium chloride#Production and use of sea water, followed by washing and Crystallization.
Various metal refineries such as alumina, copper, gold, lead, nickel, silver, uranium, and zinc.

A typical oil refinery The image below is a schematic Process flow diagram of a typical oil refinery that depicts the various unit processes and the flow of intermediate product streams that occurs between the inlet crude oil feedstock and the final end products. The diagram depicts only one of the literally hundreds of different oil refinery configurations. It does not include any of the usual refinery facilities providing utilities such as steam, cooling water, and electric power as well as storage tanks for crude oil feedstock and for intermediate products and end products. Guide to Refining from Chevron Corporation's website Refinery flowchart from UOP LLC' website An example flowchart of fractions from crude oil at a refinery

A typical natural gas processing plant The image below is a schematic Process flow diagram of a typical natural gas processing plant. It shows the various unit processes used to convert raw natural gas into sales gas pipelined to the end user markets.

The block flow diagram also shows how processing of the raw natural gas yields byproduct sulfur, byproduct ethane, and natural gas liquids (NGL) propane, butanes and natural gasoline (denoted as pentanes +). Natural Gas Processing: The Crucial Link Between Natural Gas Production and Its Transportation to Market Example Gas Plant From Purification to Liquefaction Gas Processing Feed-Gas Treatment Design for the Pearl GTL Project Benefits of integrating NGL extraction and LNG liquefaction

Typical refining of sugar Most of the sugar produced worldwide is derived either from sugarcane or sugar beets. However, the sugar produced from sugarcane is at least twice the amount produced by sugar beets. For that reason, this section on the refining of sugar deals with sugar produced from sugarcane.

Milling The refining of sugarcane into sugar has traditionally been done in two stages. The first stage is the production of a raw sugar by the milling of freshly harvested sugarcane, usually done locally in the sugarcane-producing regions. In a sugar mill, sugarcane is washed, chopped, and shredded by revolving knives. The shredded cane is mixed with water and crushed. The juices (containing 10-15 percent sucrose) are collected and mixed with lime (mineral) to adjust its pH to 7 which arrests sucrose's decay into glucose and fructose, and precipitates out some impurities. The lime and other suspended solids are settled out, and the clarified juice is concentrated in a multiple-effect evaporator to make a syrup with about 60 weight percent sucrose. The syrup is further concentrated under vacuum until it becomes supersaturated, and then seeded with crystalline sugar. Upon cooling, sugar crystallizes out of the syrup. Centrifuge then separates the sugar from the remaining liquid (molasses). Raw sugar has a yellow to brown color. To produce a white sugar, sulfur dioxide is bubbled through the cane juice before evaporation so as to bleach color-forming impurities into colourless ones. Sugar bleached white by this means is called mill white, plantation white, and crystal sugar. It is the form of sugar most often consumed in the sugarcane-producing countries.

The fibrous solids, called bagasse, remaining after the crushing of the shredded sugarcane, are burned for fuel which makes a sugar mill more than self-sufficient in energy. Any surplus bagasse can be used for animal feed, in paper manufacture, or burned to generate electricity for the local power grid.

Refining The second stage is the processing is done in sugar refineries, often located in heavy sugar-consuming regions such as North America, Europe, and Japan, to produce refined white sugar that is more than 99 percent pure sucrose. In such refineries, raw sugar is further purified. It is first mixed with heavy syrup and centrifuged to wash away the outer coating of the raw sugar crystals, which is less pure than the crystal interior. The remaining sugar is then dissolved to make a syrup (about 70 percent by weight solids) which is clarified by the addition of phosphoric acid and calcium hydroxide that combine to precipitate calcium phosphate. The calcium phosphate particles entrap some impurities and absorb others, and then float to the top of the tank, where they are skimmed off.

After any remaining solids are filtered out, the clarified syrup is decolorized by filtration through a bed of activated carbon. The purified syrup is then concentrated to supersaturation and repeatedly crystallized under vacuum to produce white refined sugar. As in a sugar mill, the sugar crystals are separated from the molasses by centrifuging. To produce granulated sugar, in which the individual sugar grains do not clump together, sugar must be dried. Drying is accomplished first by drying the sugar in a hot rotary dryer, and then by blowing cool air through it for several days.

The equipment used in refineries Refineries utilize a great many different types of physical equipment such as:

Centrifugation
Gas compressor
Cooling towers
Crushers
Crystallization processes
Distillation and Pressure vessel
Electrical generators, transformers and electric motors
Electrolysis cells
Evaporation
filter (chemistry)
Furnaces
Gas flares
Mixing and blenders
Control system
Piping and valves
Pumps
Steam generators
Steam turbines and gas turbines
Storage tanks
Industrial water treatment