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    • 4. 发明授权
      US4859643A Regeneration method with reduced catalyst heat exposure 失效
    • Regeneration method with reduced catalyst heat exposure
    • 减少催化剂热暴露的再生方法
    • US4859643A
    • 1989-08-22
    • US192800
    • 1988-05-11
    • Paul A. Sechrist , WIlliam J. Koves
    • Paul A. Sechrist , WIlliam J. Koves
    • B01J38/18 , B01J20060101 , B01J8/12 , B01J23/96 , B01J38/24 , B01J38/26 , B01J38/42 , C10G20060101 , C10G35/00 , C10G35/12
    • B01J23/96 , B01J38/24 , B01J8/125 , C10G35/12
    • A method for regenerating coke-contaminated catalyst particles achieves better utilization of oxygen and minimizes surface area loss of the catalyst by confining particles in the combustion section of a regeneration zone to a tapered bed configuration. In this method, catalyst particles move through the regeneration zone in continuous or semi-continuous flow and are formed into a vertically elongated bed of particles in the regeneration zone. An oxygen-containing gas is passed through the particle bed in a transverse direction and initiates combustion of the coke deposits along a burn front that extends diagonally through the catalyst bed from the inlet surface of the bed to the outlet surface of the bed. The catalyst bed is tapered to reduce the volume of catalyst particles behind the burn wave, with respect to gas flow through the bed, thereby increasing the gas flow through the upper portion of the bed and removing catalyst that would be exposed to high temperature flue gas flowing across the bed from the burn front. The method of this invention can confine catalyst particles to a bed having a continuous taper or the thickness of the bed may be varied by confining the catalyst in discrete bed portions that increase progressively down the length of the bed. This method of regeneration can also include steps for halogenation and drying of the catalyst particles. A particularly useful application of this invention is in reforming processes.
    • 用于再生焦炭污染的催化剂颗粒的方法通过将再生区域的燃烧部分中的颗粒限制在锥形床构型上，可以更好地利用氧气并使催化剂的表面积损失最小化。 在该方法中，催化剂颗粒以连续或半连续的流动方式移动通过再生区，并且在再生区域中形成为垂直细长的颗粒床。 含氧气体沿横向通过颗粒床，并沿着沿着床的入口表面对角延伸穿过催化剂床的燃烧前沿引发焦炭沉积物的燃烧，从床的入口表面到床的出口表面。 催化剂床是锥形的，以减少燃烧波后面的催化剂颗粒的体积，相对于通过床的气体流动，从而增加通过床的上部的气流并除去将暴露于高温烟道气的催化剂 从烧伤前沿流过床。 本发明的方法可以将催化剂颗粒限制在具有连续锥度的床上，或者床的厚度可以通过将催化剂限制在沿床的长度逐渐增加的离散床部分中来改变。 这种再生方法还可以包括催化剂颗粒的卤化和干燥步骤。 本发明的特别有用的应用是重整过程。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 6. 发明授权
      US4701429A Catalyst regeneration with varying air flow to burn-off zone from drying zone through halogenation zone 失效
    • Catalyst regeneration with varying air flow to burn-off zone from drying zone through halogenation zone
    • 催化剂再生，具有不同的空气流动，从干燥区通过卤化区到燃烧区
    • US4701429A
    • 1987-10-20
    • US920556
    • 1986-10-20
    • Arthur R. Greenwood
    • Arthur R. Greenwood
    • B01J8/08 , B01J38/26 , C10G35/12 , B01J38/44 , B01J23/96 , C10G35/085
    • C10G35/12 , B01J38/26 , B01J8/08
    • Method for effecting multiple treatment steps needed to regenerate spent hydrocarbon conversion catalyst. Catalyst is contacted with a hot oxygen-containing gas stream in order to remove coke which accumulates on the catalyst while it is in a hydrocarbon conversion zone. After the coke is burned off in a combustion zone, catalyst is passed into a halogenation zone wherein a halogen is deposited on the catalyst. Catalyst leaving the halogenation zone is passed into a drying zone for removal of water formed in the combustion zone which has remained on the catalyst instead of being carried off with combustion gases. Water removal is accomplished by passing a hot dry air stream through the catalyst in the drying zone. A portion of the air stream which has passed through the drying zone is passed through the halogenation zone in admixture with a halogen, while the balance of the air stream leaving the drying zone is removed from the regeneration apparatus by venting it to the atmosphere or another disposal location. That portion of the air stream which is utilized in the halogenation zone is then passed into the combustion zone where it provides the oxygen required to accomplish burning of the carbon. The flow of air into the drying zone is controlled at a rate established to accomplish the degree of desired drying. The oxygen content of the gas flowing to the burn-off zone is monitored and the amount of gas vented from the drying zone is adjusted in order to maintain the desired concentration of oxygen. In this manner, the amount of air supplied to the burn-off zone is adjusted independently of the air supplied to the drying zone.
    • 用于再生废碳氢化合物转化催化剂所需的多个处理步骤的方法。 催化剂与含热氧气流接触，以便在碳氢化合物转化区中除去积聚在催化剂上的焦炭。 在焦炭在燃烧区中燃烧之后，催化剂进入卤化区，其中卤素沉积在催化剂上。 离开卤化区的催化剂进入干燥区，以除去在燃烧区中形成的水​​，该燃烧区中残留在催化剂上，而不是用燃烧气体带走。 除水是通过将热的干燥空气流通过干燥区中的催化剂来完成的。 已经通过干燥区的空气流的一部分与卤素混合地通过卤化区，而离开干燥区的空气流的平衡通过排放到大气或另一个中而从再生装置中排出 处置地点。 然后将在卤化区中使用的空气流的那部分进入燃烧区，在那里提供完成燃烧碳所需的氧气。 进入干燥区域的空气流量以达到所需干燥程度而建立的速率被控制。 监测流入燃烧区的气体的氧含量，调整从干燥区排出的气体量，以保持所需的氧气浓度。 以这种方式，供应到燃烧区域的空气量被独立于供应到干燥区域的空气进行调节。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 7. 发明授权
      US4150090A Apparatus for regeneration of cracking catalyst 失效
    • Apparatus for regeneration of cracking catalyst
    • 裂化催化剂再生装置
    • US4150090A
    • 1979-04-17
    • US817470
    • 1977-07-20
    • James R. Murphy , Alvaro A. Murcia
    • James R. Murphy , Alvaro A. Murcia
    • C10G11/00 , B01J8/24 , B01J29/90 , B01J38/26 , C10G11/18 , B01D15/06 , B01J37/14
    • B01J8/24 , C10G11/182
    • A catalyst regenerator is disclosed which incorporates a closed vessel having a centered stand pipe concentrically arranged within a spent catalyst distributor. The catalyst is carried upwardly by the distributor and is scattered evenly and concentrically about the distributor. The spent catalyst is deposited on or near the top of the dense phase catalyst bed. A symmetrically arranged, preferably triangular fresh air distributor system including a number of transverse branches having small nozzles mounted thereon forms a grid pattern below the lower portions of the catalyst bed in the regenerator. Air for burning of the coke on the spent catalyst is introduced evenly to minimize the size of the air bubbles in the dense bed. The catalyst in the lower portions of the bed has a minimum of coke remaining thereon. The oxygen of the air which is introduced in the lower portions of the bed is consumed by combustion of the reduced quantity of coke in the lower portions of the bed. As the air flows through the dense bed to the upper surface, the catalyst encountered at the higher levels has more coke on it. However, the air is partly depleted of oxygen which prevents formation of excessive particle temperatures in the dense phase fluid bed. The region of high coke concentration experiences controlled burning achieved by controlled partial oxygen depletion. This tends to burn more of the carbon in the bed, thereby reducing afterburning in the dilute phase above the bed. This provides uniform heating of the catalyst to a higher temperature, thereby reducing the heat required in the feed stock pre-heater. Carbon monoxide disposal equipment is also eliminated by consumption of most of the carbon monoxide within the bed, all without afterburning thereabove.
    • 公开了一种催化剂再生器，其包括具有同心地布置在废催化剂分配器内的中心立管的封闭容器。 催化剂由分配器向上运送并且分布均匀且均匀地散布。 废催化剂沉积在密相催化剂床的顶部上或附近。 包括多个具有安装在其上的小喷嘴的横向分支的对称布置的优选三角形新鲜空气分配器系统在再生器中的催化剂床的下部下方形成网格图案。 均匀引入用于在废催化剂上燃烧焦炭的空气以最小化密床中气泡的尺寸。 床的下部的催化剂具有剩余的最少的焦炭。 引入床底部的空气的氧气被床的下部的焦炭减少量的燃烧消耗。 当空气通过致密床流到上表面时，在较高级别遇到的催化剂具有更多的焦炭。 然而，空气部分地耗尽氧气，这防止在密相流化床中形成过多的颗粒温度。 焦炭浓度较高的地区经受受控部分氧耗损控制燃烧。 这倾向于在床中燃烧更多的碳，从而减少在床上的稀相中的后燃烧。 这提供了将催化剂均匀加热到较高温度，从而减少了原料预热器中所需的热量。 一氧化碳处理设备也通过消耗床内大部分一氧化碳而消除，所有这一切都没有在上面燃烧。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
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