Series-wound type poly-generation technology for coal chemical industry

A polygeneration and series-type technology, which is applied in the chemical industry, organic chemistry, petroleum industry, etc., can solve the problems of lower product synthesis rate and failure to play the purpose of polygeneration, and achieve the effect of improving energy saving effect

Active Publication Date: 2011-09-21
PETROCHINA CO LTD +1
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Problems solved by technology

However, the simple coal chemical series polygeneration process has some unreacted gas, and the product synthesis rate is lower than t

Method used

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  • Series-wound type poly-generation technology for coal chemical industry
  • Series-wound type poly-generation technology for coal chemical industry
  • Series-wound type poly-generation technology for coal chemical industry

Examples

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Example Embodiment

[0018] Example 1: The complex coal chemical industry series polygeneration process using the method of the present invention will figure 1 The project in which the chemical products in China are replaced with methanol is the flow chart of the complex coal chemical industry series methanol-power polygeneration system, such as figure 2 Shown. The raw coal is Shanxi Jincheng No. 9 anthracite, and the basic components of the coal are shown in Table 1.

[0019] Table 1 Composition of Shanxi Jincheng No. 9 Anthracite

[0020]

[0021] Gasification process: Choose Shell gasification process. According to the temperature required for the reaction of the gasifier (>1000°C to ensure liquid slag discharge), and under the condition of optimal thermal efficiency, the inlet parameters of the gasifier are selected as shown in Table 2:

[0022] Table 2 Proportion of gasification agent

[0023]

[0024] Purification and steam conversion process: According to the complex coal chemical industry serie...

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Abstract

The invention discloses a series-wound type poly-generation technology for coal chemical industry, wherein the coal gasification is taken as the source and a chemical process and a power system are connected in series to form an upstream-and-downstream optimal combination. After undergoing the cooling and purification process, raw gas is directly subjected to a synthetic reaction to produce chemical products. Unreacted gas is divided into recycle gas and unrecycled gas: based on the technology of adjusting non-synthetic gas and appropriately recycling unreacted gas, the recycle gas undergoes syngas adjustment to raise the ratio of H2 to CO and then is mixed with the new synthetic gas so as to make the components of the synthetic gas more close to the chemical dose ratio required by the chemical reaction; and the unrecycled gas undergoes the preheating and swelling treatment and then sent to a gas-steam combined-cycle power generation system. The system adopted in the invention includes a space division unit, a synthetic gas preparation unit, a sensible heat recycle unit, a purification unit, a synthesis unit, a conversion unit and a power generation unit. The production technologyprovided by the invention can raise energy utilization efficiency, reduce investment and cost and markedly enhance economic performance.

Description

Technical field: [0001] The invention belongs to the technical field of energy power and chemical engineering, and relates to a series polygeneration process of coal chemical industry, in particular to an optimized integration of coal-based energy and chemical process for efficient use of materials and energy, forming chemical, electric, thermal, etc. A new process for joint production of multiple products. Background technique: [0002] my country's energy structure has been dominated by coal for a long time, and fundamental changes are unlikely to occur in the next few decades. However, coal, as a non-renewable resource, has been exploited in large quantities, and the energy crisis has become increasingly severe. A very effective way to reduce investment, alleviate energy crisis, save energy and reduce emissions in the future is to implement coal chemical polygeneration technology. The existing coal chemical cogeneration process generally adopts the process of parallel co...

Claims

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Application Information

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IPC IPC(8): C10J3/06C10J3/84C10J3/72C10J3/86C10L1/02F02C6/00C07C31/04C07C29/151C07C43/04C07C41/01
CPCY02E20/18Y02E20/14Y02P20/129Y02P20/50
Inventor 李云程光旭杨莉张旭谢新华
Owner PETROCHINA CO LTD
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