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A method and system for removing tar

A technology of tar and reactor, which is applied in the field of mineral circulation for tar removal, and can solve problems such as undesired shutdown, blockage of tar particles, loss of multiple heat recovery, etc.

Inactive Publication Date: 2018-10-23
NEWCASTLE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The second reason is that gasification has extremely low NO due to the absence of nitrogen and excess oxygen x and SO x emission
This tar deposit results in unwanted downtime and high heat recovery losses
Tar particles can also cause clogging and wear problems when the producer gas is used in downstream applications such as engines and turbines

Method used

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  • A method and system for removing tar
  • A method and system for removing tar
  • A method and system for removing tar

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Embodiment Construction

[0052] The invention will now be described with reference to the following examples, which should be considered in all respects as illustrative and not restrictive. In the figures, corresponding features in the same embodiment or common to different embodiments have been given the same reference numerals.

[0053] Biomass gasification is a process of converting carbonaceous fuels into synthesis gas (or the familiar term syngas) via thermochemical routes. To benefit downstream energy / power conversion processes, the syngas produced should ideally have a high lower heating value (LHV). However, the synthesis gas quality is affected by the use of different gasification agents. For example, biomass gasification using air as the gasification agent produces only about 4.4 MJ / m 3 Syngas with low LHV, while using pure oxygen, can obtain higher LHV (~9.6MJ / m 3 ). However, the use of pure oxygen as the gasification agent requires additional costs associated with the air separation un...

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Abstract

The present invention provides a method (1) and a system for removal of tar from a synthesis gas (10) using a chemical loop (23). A first reactor (20, 55) is fed with mineral particles and the synthesis gas. The mineral particles catalyze the tar in the synthesis gas to produce a mixture comprising hydrogen and a mineral carbonate. A second reactor (15, 70) is fed with oxygen and the mineral carbonate. The oxygen reacts with the mineral carbonate to produce a flue gas (25) comprising carbon dioxide and mineral particles, which are then separated and the mineral particles are recycled to the first reactor.

Description

technical field [0001] The present invention relates to methods and systems for tar removal, and more particularly to mineral recycling methods and systems for tar removal. The present invention was primarily developed for the removal of tar from syngas using mineral-based chemical recycling methods. Background technique [0002] The following discussion of the prior art is intended to present the present invention with an appropriate technical background and to enable the advantages of the present invention to be properly understood. However, unless expressly indicated to the contrary, reference to any prior art in this specification should not be construed as an express or implied admission that such art is widely known or forms part of the common general knowledge in the art. [0003] Biomass, which is mainly composed of cellulose, hemicellulose and lignin, is a promising fuel resource. Biomass is available all over the world, and due to CO 2 The biological cycle, biom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10K3/00C10J3/72C10J3/00
CPCC10J3/72Y02E20/16Y02E20/18C10G2300/4093C10K3/006C01B2203/0435C01B2203/048C10K3/023C01B3/58
Inventor 贝达德·莫格塔代里卡尔皮特·沙阿
Owner NEWCASTLE UNIV
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