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    • 1. 发明授权
    • Process and apparatus for ethylene production
    • 乙烯生产工艺和设备
    • US4172857A
    • 1979-10-30
    • US893241
    • 1978-04-03
    • Stanley J. Pavilon
    • Stanley J. Pavilon
    • C10G9/32C07C3/30
    • C10G9/32C10G2400/20
    • A thermal cracking process and apparatus are disclosed for economical manufacture of lower olefins and valuable coproducts by pyrolysis of liquid or gaseous hydrocarbon feedstocks ranging from ethane to tar sands, particularly feedstocks, such as gas oil, naphtha, residual oils or tar sands. The pyrolysis unit is a riser reactor heated by hot agglomerated ash particles and designed for short residence time to minimize the time of contact of the feedstock with the hot ash. The agglomerated ash is continually produced in a fluidized bed combustion unit by burning particles of coal or other solid carbonaceous material, and the hot agglomerated ash is continually forced upwardly through the riser by superheated steam which is further superheated in the riser reactor and which serves as dilution steam for hydrocarbon partial pressure reduction. Additional dilution steam enters the reactor with the preheated feedstock. A water quench at the outlet of the reactor slows down or stops secondary reactions as the cracked gases are separated from the hot ash in a roughing cyclone separator. The ash particles, which are coated with coke or char after reaction, are preferably steam stripped to remove occluded hydrocarbon and are thereafter recycled to the bed of the combustion unit. If the feedstock is tar sand or a feedstock with high coking tendencies, it may be preferable to burn at least part of the char or coke coated ash and/or sand particles from the riser reactor in a separate burner and thus dispose of some of the solids before the ash recycle to the main combustion unit.
    • 公开了一种热裂解方法和装置,用于通过热解从乙烷到焦油砂,特别是原料如瓦斯油,石脑油,残余油或焦油砂的液体或气态烃原料来经济地制造低级烯烃和有价值的副产物。 热解单元是由热附聚灰分颗粒加热的提升管反应器,并设计为短停留时间以最小化原料与热灰的接触时间。 通过燃烧煤或其他固体碳质材料的颗粒,在流化床燃烧单元中连续生成附聚灰,并且热附聚灰通过提升管持续地向上穿过提升管,该过热蒸汽在提升管反应器中进一步过热, 稀释蒸汽用于烃分压降低。 额外的稀释蒸汽用预热的原料进入反应器。 当反应器出口处的水骤冷器减速或停止二次反应,因为裂化气体与粗气旋风分离器中的热灰分离。 反应后涂有焦炭或焦炭的灰分颗粒优选蒸汽汽提以除去封闭的烃,然后再循环到燃烧单元的床中。 如果原料是焦油砂或具有高焦化倾向的原料,则可优选在单独的燃烧器中将来自提升管反应器的焦炭或焦炭涂覆的灰分和/或砂粒的至少一部分燃烧,因此处理一些 灰分回收到主燃烧单元之前的固体。
    • 2. 发明授权
    • Process for conversion of gas oil to ethylene and needle coke
    • 瓦斯油转换成乙烯和针状焦的方法
    • US4138325A
    • 1979-02-06
    • US863403
    • 1977-12-22
    • Harold BeutherJoel D. McKinneyHarold E. Swift
    • Harold BeutherJoel D. McKinneyHarold E. Swift
    • C10G9/00C10G51/00C10G65/16C10G69/06C10G37/06C07C3/30
    • C10G65/16C10G2400/20
    • A process for the conversion of gas oil to a naphtha pyrolysis feedstock and needle coke comprising thermally cracking the gas oil to produce a product comprising cracked naphtha and aromatic tar oil, delay coking said aromatic tar oil to produce needle coke and coker naphtha, and hydrotreating said cracked naphtha and said coker naphtha at a temperature at least 50.degree. F. (28.degree. C.) lower than the temperature in the thermal cracking and coking zones to avoid hydrocarcking reactions and to produce a hydrogenated naphtha containing at least 10 volume percent of cycloparaffins. Said hydrogenated naphtha is thereupon passed through a pyrolysis zone without added molecular hydrogen and without a catalyst operated at a temperature between 1,300 and 2,300.degree. F. (704 and 1,260.degree. C.) and a residence between 0.05 and 2 seconds to produce a product containing ethylene. The ethylene yield can be increased by adding a sulfur compound to the hydrogenated naphtha stream flowing to the pyrolysis zone.
    • 一种将瓦斯油转化为石脑油热解原料和针状焦的方法,其包括热裂解瓦斯油以产生包含裂化石脑油和芳烃焦油的产物,延迟焦化所述芳烃焦油以产生针状焦炭和焦化石脑油,加氢处理 所述裂化石脑油和所述焦化石脑油在比热裂解和焦化区中的温度低至少50°F(28℃)的温度下避免氢化反应并产生含有至少10体积%的氢化石脑油 环烷烃 所述氢化石脑油随后通过热分解区而不加入分子氢,并且在温度为1300至2300°F(704和1,260℃)之间操作的催化剂和在0.05至2秒之间的惰性气体中生产含有 乙烯。 可以通过向流入热解区的氢化石脑油流中加入硫化合物来提高乙烯收率。
    • 3. 发明授权
    • Production of cracked gases from liquid hydrocarbon
    • 从液体石油生产裂缝气体
    • US3848016A
    • 1974-11-12
    • US34199473
    • 1973-03-16
    • UBE INDUSTRIES
    • NIWA TKITAJIMA MKONO HTERAI KNAKAI SSAWADA MNINOMIYA K
    • C10G9/32B01J8/28B01J19/00C10G9/38C07C3/30
    • B01J8/28C10G2400/20Y10S585/926Y10S585/95
    • 1. IN A PROCESS FOR CRACKING LIQUID HYDROCARBON INTO GASES IN A FLUIDIZED BEED OF SOLID PARTICLES, THE IMPROVEMENT COMPRISING; (A) FORMING A UNITARY FLUIDIZED BED OF SOLID PARTICLES HAVING A CENTRAL ZONE FOR CRACKING A STARTING LIQUID HYDROCARBON TO CRACKED GASES, AN UPPER ZONE FOR QUENCHING SAID CRACKED GASES, AND A LOWER ZONE FOR CRACKING LIQUID HYDROCARBON RECOVERED FROM SAID CRACKED GASES, SAID CENTRAL ZONE COMMUNICATING WITH SAID LOWER ZONE AND SAID UPPER ZONE THROUGH NARROW PASSAGES OR NECK ZONES FORMED THEREBETWEEN; (B) SPRAYING SAID STARTING LIQUID HYDROCARBON AND A FIRST PORTION OF STEAM AS A FLUIDIZING GAS INTO CENTRAL ZONE WHILE PASSING A SECOND PORTION OF STEAM, CRACKED GASES FROM RECOVERED LIQUID HYDROCARBON, HEREINAFTER DESCRIBED, AND ENTRAINED SOLID PARTICLES FROM SAID LOWER ZONE INTO SAID CENTRAL ZONE FROM THE BOTTOM THEREOF THROUGH SAID NARROW NECK ZONE, THEREBY CRACKING SAID STARTING LIQUID HYDROCARBON IN SAID CENTRAL ZONE TO GASES; (C) SPRAYING A LIQUID HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF A SAID STARTING LIQUID HYDROCARBON AND SAID RECOVERED LIQUID HYDROCARBON INTO SAID UPPER ZONE, WHILE PASSING A SECOND GAS MIXTURE COMPRISED OF SAID FIRST AND SECOND PORTIONS OF STEAM, SAID CRACKED GASES AND ENTRAINED SOLID PARTICLES FROM SAID CENTRAL ZONE INTO SAID UPPER ZONE FROM THE BOTTOM THEREOF THROUGH SAID NARROW NECK ZONE, WHEREBY SAID CRACKED GAS MIXTURE IS QUENCHED AND A PORTION OF THE CARBON, TAR AND HEAVY OIL FRACTIONS WHICH ARE CONTAINED IN SAID CRACKED GAS MIXTURE ADHERE TO SAID ENTRAINED SOLID PARTICLES;

      (D) REMOVING SAID CRACKED GAS MIXTURE FROM SAID UPPER ZONE AND TREATING SAID CRACKED GAS MIXTURE TO SEPARATE SAID CARBON, TAR AND HEAVY OIL FRACTIONS, WHICH COMPRISE THE RECOVERED LIQUID HYDROCARBON, REFERENCED HEREINBEFORE, TO BE FED TO SAID BED, WHILE A PORTION OF SAID ENTRAINED SOLID PARTICLES ARE REMOVED FROM SAID UPPER ZONE AND RECYCLED TO SAID LOWER ZONE; AND (E) FEEDING OXYGEN, SAID SECOND PORTION OF STEAM AS A FLUIDIZED GAS AND SAID RECOVERED LIQUID HYDROCARBON INTO SAID BOTTOM OF SAID LOWER ZONE TO FLUIDIZE SAID SOLID PARTICLES THROUGHOUT AND PARTIALLY BURN SAID RECOVERED LIQUID HYDROCARBON, THEREBY CRACKING SAID RECOVERED LIQUID HYDROCARBON TO SAID CRACKED GASES.