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What is naphtha cracking center? – 여천NCC
The plant with the facilities for cracking naphtha at a high temperature in excess of 800 degrees Celsius to produce petrochemical feedstocks like ethylene, …
Source: www.yncc.co.kr
Date Published: 12/6/2021
View: 8906
NCC | Petrochemicals – LG Chem
NCC is a facility for producing basic petrochemicals such as ethylene and propylene, which are the base materials for petrochemistry, by cracking naphtha at …
Source: www.lgchem.com
Date Published: 1/1/2022
View: 7983
Naphtha cracking – SlideShare
Naphtha Cracking A presentation by : Niteesh Kumar Vats ME, Chemical Engg. IISc Bangalore.
Source: www.slideshare.net
Date Published: 12/24/2022
View: 4955
LOTTE Chemical – Product | NCC / ECC – 롯데케미칼
Chemical products produced by LOTTE Chemical is derived from naphtha, which is obtained by refining crude oil. The Naphtha Cracking Center(NCC) pyrolyzes …
Source: product.lottechem.com
Date Published: 4/21/2021
View: 9098
naphtha cracking center: Topics by WorldWideScience.org
Sample records for naphtha cracking center … Steam cracking of straight-run naphtha from Romashkino crude oil was investigated in quartz and stainless …
Source: worldwidescience.org
Date Published: 7/29/2022
View: 4226
Understanding Naphtha and Ethane Cracking Processes
Two of the main feedstocks are naphtha and ethane. … One fire in an ethane cracking facility in Japan was the result of a pipe gue that …
Source: www.hosemaster.com
Date Published: 2/12/2021
View: 6210
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주제와 관련된 더 많은 사진을 참조하십시오 [NCC 프로젝트] EP-04 | 납프타 열분해 (화학/화공 4학년) | Naphtha Cracking Center. 댓글에서 더 많은 관련 이미지를 보거나 필요한 경우 더 많은 관련 기사를 볼 수 있습니다.
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주제에 대한 기사 평가 naphtha cracking center
- Author: Nick’s Engineering
- Views: 조회수 1,589회
- Likes: 좋아요 41개
- Date Published: 2022. 8. 28.
- Video Url link: https://www.youtube.com/watch?v=Ryqk1ek1f3w
YEOCHUN NCC
What is naphtha
cracking center?
The plant with the facilities for cracking naphtha at a high temperature in excess of 800 degrees Celsius to produce petrochemical feedstocks like ethylene, propylene, mixed-C4 and pyrolysis gasoline (PG), is called the naphtha cracking center or naphtha cracking plant.
If naphtha, connected by 5~12 carbon chains, is inputted into the heater at a high temperature in excess of 800 degrees Celsius, the carbon chains are cracked, and mainly light hydrocarbon mixtures (hydrogen, methane, ethylene, propylene, propane, mixed-C4, pyrolysis gasoline) with 1~4 carbons will be generated (about 75%).
Accordingly, it refers to a place (center) with the facilities for cracking naphtha to produce basic petrochemical feedstock. It is called the Naphtha Cracking Center or Naphtha Cracking Plant.
As technology advances, not only naphtha, but also diesel (Gas Oil) and natural gas are used as feedstock to produce ethylene. Accordingly, the place where ethylene is produced, is called ethylene Plant, instead of naphtha cracking center.
Yeochun NCC calls the ethylene plant, which cracking naphtha to produce ethylene, propylene and propane mixed-C4, the Naphtha Cracking Center.
Petrochemicals
Achieving the best energy efficiency in the world
NCC is a facility for producing basic petrochemicals such as ethylene and propylene, which are the base materials for petrochemistry, by cracking naphtha at high temperature. Naphtha is obtained by refining crude oil. LG Chem has secured excellent cost competitiveness by achieving the best energy efficiency in the world.
Naphtha cracking
Everybody Lies: Big Data, New Data, and What the Internet Can Tell Us About Who We Really Are Seth Stephens-Davidowitz
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Understanding Naphtha and Ethane Cracking Processes
Let’s investigate naphtha and ethane cracking.
Ethylene – because its molecules have very distinctive and useful chemical properties – is manufactured in greater amounts than any other chemical. The majority of ethylene is produced using a process called “steam cracking”, a thermal process where hydrocarbons are broken down, or “cracked” into smaller molecules that are then used to manufacture more useful (and valuable) chemicals. In the petrochemical industry, two of the main feedstocks for steam crackers are naphtha and ethane.
Naphtha is primarily derived from crude oil, while ethane is more prevalent in natural gas and natural gas liquids (aka NGLs, a mixture of various hydrocarbons often co-produced along with natural gas). Steam cracking these hydrocarbons is accomplished by first mixing them with steam, then running them through tubes in a cracking furnace where the feedstock is briefly heated to very high temperatures. The cracked feedstock is then rapidly quenched (cooled) to stop the hydrocarbon molecules from being completely consumed. The resulting product streams are separated and purified, leaving valuable compounds called “olefins”: ethylene, propylene, and others. These olefins, or monomers, are then processed so they form chains of molecules called polymers – plastics with varying properties and uses. Olefins are a group of petrochemicals, because they are derived from petroleum and/or natural gas.
Before hydraulic fracturing revolutionized the way we produce natural gas and NGLs in the U.S., most steam cracking furnaces used naphtha as the primary feedstock. Because oil prices were much lower overseas, many U.S.-based steam cracking plants were forced to close, as they were simply not competitive on a global scale. This all changed when hydraulic fracturing shale formations provided inexpensive and plentiful supplies of natural gas and NGLs, which are rich in ethane. American petrochemical manufacturers are now very competitive globally and are expanding ethane cracking capacity.
Steam cracking furnaces for ethane are similar to those using naphtha. In fact, many U.S. steam crackers are designed to run either feedstock. However, the actual cracking reaction must be carefully tailored depending on the composition of the feedstock as well as the desired end product. The temperature in the cracking furnace, the residence time of the feedstock, and the quenching process used all affect the quality of the produced hydrocarbon stream. Once the feedstock has been cracked, the product stream must be purified and separated, using various processes depending on the feedstock. These furnaces must occasionally be de-coked, which requires injecting flammable gas into the furnace in order to burn residue (coke) off of the tubes carrying the hydrocarbon feedstock.
Regardless of the feedstock (naphtha, ethane, propane, butanes, kerosene, et al), steam cracking requires vast amounts of energy. In fact, it is the single most energy-consuming process in the chemical industry. Most of this energy is used to create the steam and the heat in the cracking furnaces, but energy is also required for pumps, quenching towers, heat exchangers, compressors, condensers, cold boxes, distillation towers, decoking operations, and many other processes. Because of the sequential heating and cooling of all of the different process streams, there is quite a bit of thermal expansion and contraction in the piping systems that connect this equipment.
These piping systems must have a way to prevent the stresses that are created from thermal expansion from being applied to the piping system. If these stresses acted on the piping system, then cracks could develop, allowing dangerous product leaks. A metal expansion joint is perfectly suited to accommodate these thermal movements, thus preventing the associated stresses from acting on the piping system. But the expansion joint must also be properly applied into a well-designed piping system, where pipe anchors and guides are used to control the stresses being applied to the expansion joint. One fire in an ethane cracking facility in Japan was the result of a pipe guide that malfunctioned, which did not allow the pipe to expand properly. The pipe then cracked, leaking ethylene into the furnace, resulting in a huge fire.
Expansion joint salespeople must not only be familiar with the products they supply, but also with how those products work along with the rest of the components in a properly designed piping system. Accordingly, we spend a lot of time discussing piping system components such as anchors, guides, supports, and hangers in Hose Master University. Any expansion joint must be installed in a properly anchored and guided piping system in order to perform as designed. Still not sure about the performance requirements of the intended application? That’s why we’re here. Contact us today if we can help you to survey the piping layout. Call us at 1-800-221-2319 or through our website at hosemaster.com today. Let’s get cracking!
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주제에 대한 기사를 시청해 주셔서 감사합니다 [NCC 프로젝트] EP-04 | 납프타 열분해 (화학/화공 4학년) | Naphtha Cracking Center | naphtha cracking center, 이 기사가 유용하다고 생각되면 공유하십시오, 매우 감사합니다.