Process for the manufacture of fuel gas
    81.
    发明授权
    Process for the manufacture of fuel gas 失效
    燃料气体制造工艺

    公开(公告)号:US4211540A

    公开(公告)日:1980-07-08

    申请号:US974221

    申请日:1978-12-29

    Applicant: David Netzer

    Inventor: David Netzer

    Abstract: An improved process is disclosed for the production of fuel gas such as synthetic natural gas from coal. A sized coal feed of larger particle size is gasified in a moving bed gasifier such as the British Gas/Lurgi slagging gasifier, and forms a methane rich synthesis gas containing heavy and light organics which is quenched to form a water phase containing dissolved phenolic and other compounds. The water phase is separated from the gas phase and insoluble organics and mixed with a second portion of the coal containing fine particles which are not suitable for moving bed gasification to form a slurry. This coal-phenolic water slurry is gasified in an entrained bed gasifier, for example, the Texaco partial oxidation process, and forms a methane lean synthesis gas. The phenol, ammonia and dissolved organics in the water phase are destroyed and converted to valuable product gas. At least part of this product gas may be blended with the moving bed product gas for further processing to produce the desired fuel gas product. The product gas from the entrained bed gasifier is also suitable for production of hydrogen, ammonia, or methanol.

    Abstract translation: 公开了用于生产诸如来自煤的合成天然气的燃料气体的改进方法。 较大颗粒尺寸的煤炭进料在诸如英国Gas / Lurgi造渣气化炉的移动床气化炉中气化,形成含有重,轻有机物的富含甲烷的合成气,其被淬灭以形成含有溶解的酚醛等的水相 化合物。 将水相与气相和不溶性有机物分离,并与不适于移动床气化的第二部分含煤微粒混合形成浆料。 这种煤 - 酚水浆料在夹带床气化器中气化,例如Texaco部分氧化工艺,并形成贫烷烃合成气。 水相中的苯酚,氨和溶解的有机物被破坏并转化为有价值的产物气体。 该产物气体的至少一部分可以与移动床产物气体共混以进一步处理以产生所需的燃料气体产物。 来自夹带床气化器的产物气体也适用于生产氢气,氨气或甲醇。

    Coal gasification process with improved procedures for continuously
feeding lump coal under pressure
    82.
    发明授权
    Coal gasification process with improved procedures for continuously feeding lump coal under pressure 失效
    煤气化过程改进了在压力下连续供应块煤的程序

    公开(公告)号:US4017270A

    公开(公告)日:1977-04-12

    申请号:US542407

    申请日:1975-01-20

    Abstract: A gasification process in which gasification of lump size gas producing material, such as coal, is carried out under high pressure on a fixed-bed principle with a continuous feed of coal particles thereto, the continuous feed being accomplished by feeding coal of an appropriate particle size range into a volume of liquid within a first confinement path through a free surface thereof exposed to atmospheric conditions, collecting successive incremental volumes of particles and entrained liquid and transferring them into a liquid within a second circuitous confinement path maintained under pressure by virtue of the exposure of the free surface of a volume thereof with the gasification pressure conditions, conveying the particles of the incremental volumes communicated with the second path through a pumping action upstream of the particle communication therewith, collecting the particles in the volume and moving them upwardly through the free surface thereof into the gasification zone.

    Abstract translation: 一种气化过程,其中一个等体积煤气产生材料如煤的气化在固定床原理上在高压下进行,其中连续进料煤颗粒,连续进料通过将适当颗粒的煤进料 尺寸范围进入通过其暴露于大气条件的自由表面的第一限制路径内的一定体积的液体,收集连续的增量体积的颗粒和夹带的液体,并将它们转移到第二迂回约束路径内的液体中,所述液体保持在压力下由于 将其体积的自由表面暴露于气化压力条件下,通过与颗粒连通的上游的泵送作用传送与第二路径连通的增量体积的颗粒,将颗粒收集在体积中并将它们向上移动通过 其自由表面进入气化区。

    Processing of sewage sludge for use as a fuel
    90.
    发明授权
    Processing of sewage sludge for use as a fuel 失效
    污水处理用作燃料

    公开(公告)号:US5264009A

    公开(公告)日:1993-11-23

    申请号:US938810

    申请日:1992-09-01

    Abstract: A process for disposing of sanitary sewage sludge by producing a pumpable slurry of sewage sludge with or without solid carbonaceous fuel and burning said slurry as fuel in a partial oxidation gas generator, furnace, or boiler. The aqueous slurry of sewage sludge is concentrated by removing water by means of a conventional belt filter press, centrifuge, or hydroclone. The dewatered slurry of sewage sludge is preheated and sheared; hydrothermally treated; and its solids content increased. A chelating agent, for example an aminopolycarboxylic acid or a hydrocarboxylic acid is mixed with the aqueous slurry of sewage sludge during the preheating and shearing step and/or the step for increasing its solids content. By means of the subject process, the viscosity of the slurry of sewage sludge with or without solid carbonaceous fuel is reduced and coagulation is suppressed. A pumpable aqueous slurry of sewage sludge with or without solid carbonaceous fuel is produced and burned with a free-oxygen containing gas in a partial oxidation gasifier, furnace, boiler, or incinerator to produce a hot raw effluent gas stream. In a preferred embodiment, the effluent gas stream is cleaned and purified and non-contaminating ash and slag are separated. By this process, noxious sewage sludge may be disposed of without contaminating the environment. By-product synthesis gas, reducing gas, or fuel gas may be produced.

    Abstract translation: 通过生产具有或不具有固体碳质燃料的污水污泥的可泵送浆料并在所述部分氧化气体发生器,炉或锅炉中燃烧所述浆料作为燃料来处理生活污水污泥的方法。 通过传统的带式压滤机,离心机或水力旋流器除去水,污泥污泥的含水浆液被浓缩。 污水污泥脱水浆预热剪切; 水热处理; 其固体含量增加。 在预热和剪切步骤和/或增加其固体含量的步骤中,将螯合剂,例如氨基多羧酸或氢化羧酸与污水污泥的含水浆料混合。 通过本发明方法,具有或不具有固体碳质燃料的污泥的淤浆的粘度降低并且凝结被抑制。 在部分氧化气化炉,炉,锅炉或焚化炉中,产生具有或不含固体碳质燃料的污水污泥的可泵送含水浆料并用含游离氧气气体燃烧,以产生热的原料流出气流。 在一个优选的实施方案中,将废气流清洁和净化,并且将非污染灰和渣分离。 通过这个过程,可以处理有害污水污泥而不污染环境。 可以生产副产物合成气,还原气体或燃料气体。

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