WO2009023987A1

WO2009023987A1 - A preparing process of co-producing methanol as high clean fuel using industrial waste gas

Info

Publication number: WO2009023987A1
Application number: PCT/CN2007/002523
Authority: WO
Inventors: Xichao Ma
Original assignee: Xichao Ma
Priority date: 2007-08-21
Filing date: 2007-08-21
Publication date: 2009-02-26

Abstract

Disclosed is a preparing process of synthesizing methanol as high clean fuel using coal gasifying, power plant or other industrial waste gas and compounding absent gas itself, which comprises the following steps: introducing industrial waste gas as raw materials; processing industrial waste gas to prepare one or two product gases of O2, CO and H2; introducing product gases to synthetic tower; controlling the ratio of the gases entering synthetic tower and ensuring the gas components in synthetic tower, and automatically supplementing the absent gas in synthetic tower by computer, till the supplement obtains required ratio, to synthesis methanol; and inputting methanol as fuel to storage base for use.

Description

利用工业废气联产高清洁燃料甲醇的制备工艺技术领域 Process for preparing high-clean fuel methanol using industrial waste gas

本发明涉及工业废气的处理方法，特别是涉及一种利用电厂废气、煤炭气化或其他工业废气，配入本身缺少的气体合成高清洁燃料甲醇的制备工艺。利用该工艺生成的高清洁燃料甲醇不论用于清洁发电，高清洁车用燃料，还是制成居民生活和工业使用的化工产品，都能够达到有害气体零排放的效果。背景技术 The invention relates to a method for treating industrial waste gas, in particular to a process for preparing a high-clean fuel methanol by using a power plant exhaust gas, coal gasification or other industrial waste gas, and a gas which is lacking in itself. The high-clean fuel methanol produced by this process can achieve zero-emissions of harmful gases, whether it is used for clean power generation, high-cleaning vehicle fuels, or chemical products for residential and industrial use. Background technique

世界各国传统的煤炭直接燃烧发电的工艺，每吨煤炭的利用效率只有 30% 左右，其余的 70%与氧气（0₂)混合产生 2吨左右的二氧化碳（CO₂)、二氧化硫（SO₂) 以及氮氧化合物。我国使用传统工艺利用煤炭直接燃烧发电、冶炼焦炭、冶炼钢铁等，不仅浪费了大量的煤炭资源，每年还要向自然环境中排放 30亿吨以上的 CO₂、 80₂和氮氧化合物，这给自然环境造成严重的污染并形成酸雨和温室效应。 The traditional coal direct combustion power generation process in the world, the utilization efficiency per ton of coal is only about 30%, and the remaining 70% is mixed with oxygen (0 ₂ ) to produce about 2 tons of carbon dioxide (CO ₂ ), sulfur dioxide (SO ₂ ) and Nitrogen oxides. China uses traditional technology to directly use coal to burn electricity, smelt coke, smelt steel, etc., not only wastes a lot of coal resources, but also discharges more than 3 billion tons of CO ₂ , 80 ₂ and nitrogen oxides into the natural environment every year. The natural environment causes serious pollution and forms acid rain and greenhouse effects.

为了达到国际上规定的排放标准，目前发达国家已经研究发明了世界上先进的煤炭气化发电或合成甲醇 (CH₃OH)工艺。由于采用的煤炭质量不同，每吨煤炭气化获得煤气的数量和质量也有所不同。典型的煤气成分见表 1。 In order to meet the internationally specified emission standards, developed countries have researched and invented the world's advanced coal gasification power generation or synthesis methanol (CH ₃ OH) process. Due to the different quality of coal used, the quantity and quality of gas obtained per ton of coal gasification are also different. Typical gas compositions are shown in Table 1.

表 1

从上述典型的煤气成分表 1中可以看出，煤气成分中的 CO比 H₂高出 35%，如合成 CH₃OH燃料只利用了 15%的 CO。因此，还有 50%的 CO不能被充分利用。所以，使用表 1 中的煤气不论是合成 CH₃OH还是发电等，都要剩余 50% 的 CO， CO与 O₂混合后将产生 1吨以上的 CO₂。由于煤炭气化时回收了 98% 以上的硫元素，所以 S0₂和氮氧化合物都能达到低排放。 Table 1

As can be seen from Table 1 of the above typical gas composition, CO in the gas component is 35% higher than H ₂ , and only 15% CO is utilized for the synthesis of CH ₃ OH fuel. Therefore, 50% of the CO cannot be fully utilized. Therefore, using the gas in Table 1 is 50% CO remaining in the synthesis of CH ₃ OH or power generation. When CO and O _{2 are} mixed, more than 1 ton of CO ₂ will be produced. Since more than 98% of the sulfur is recovered during coal gasification, both S0 ₂ and nitrogen oxides can achieve low emissions.

煤炭气化后发电能把煤炭直接燃烧发电的效率从 30%提高到 50%，并能降低 40%的污染源。如果就一座电厂来衡量，煤炭气化后发电是完全可以满足国际上规定的对一个电厂 C0₂排放数量的要求。然而，地球大气层对污染源的容量是固定的，随着世界经济的快速发展，用电需求和能源需求却以数倍的速度增长，就整体情况来看，煤炭气化后发电或合成甲醇的技术都还是无法达到国际上规定的对 0¾总体排放数量的要求。目前煤炭气化发电的先进技术只有法国、日本、英国、美国、荷兰、德国等少数国家在进行工业试验和推广应用阶段。我国也正在少数煤炭气化后利用煤气发电的工厂进行工业试验。煤炭气化发电能够节约 20%的能源，并可以减少 40%的 CO₂排放。我国每年排放的 1000 亿立方米焦炉煤气只有一小部分被简单地利用，利用效率很低。由于焦炉气本身含 H₂60%左右，含 C017%左右，所以简单地利用还是要浪费掉 26%左右的 ¾，仍难以满足要求。发明内容 After coal gasification, power generation can increase the efficiency of coal direct combustion power generation from 30% to 50%, and can reduce pollution sources by 40%. If measured by a power plant, the power generation after coal gasification is fully satisfactory. The requirement for the amount of C0 ₂ emissions from a power plant. However, the Earth's atmosphere has a fixed capacity for pollution sources. With the rapid development of the world economy, electricity demand and energy demand have increased several times. As a whole, the technology of power generation or methanol synthesis after coal gasification It is still unable to meet the internationally required requirements for the total emissions of 03⁄4. At present, the advanced technologies of coal gasification power generation are only in the industrial trial and promotion and application stages of a few countries such as France, Japan, Britain, the United States, the Netherlands, and Germany. China is also conducting industrial tests at a factory that uses gas to generate electricity after a few coal gasification. Coal gasification power generation can save 20% of energy and can reduce CO ₂ emissions by 40%. Only a small part of the 100 billion cubic meters of coke oven gas emitted annually in China is simply used, and the utilization efficiency is very low. Since the coke oven gas itself contains about 60% of H ₂ and contains about C017%, it is still difficult to meet the requirement by simply using about 26% of the 3⁄4. Summary of the invention

本发明的目的在于克服现有技术中存在的不足，提供一种利用煤炭气化、电厂废气、焦化厂废气、炼钢厂高炉废气、化工厂废气等工业废气作为原料，配入本身缺少的气体，生产出高清洁燃料甲醇的制备工艺。可用于电厂发电'，居民生活和工业使用，或作为高清洁汽车燃料以及生产化工产品等。 The object of the present invention is to overcome the deficiencies in the prior art and provide an industrial waste gas such as coal gasification, power plant exhaust gas, coking plant waste gas, steelmaking plant blast furnace waste gas, chemical plant waste gas, and the like as raw materials, and the gas which is lacking itself is allocated. , the production process of producing high clean fuel methanol. It can be used for power generation in power plants, residential and industrial use, or as a high-clean car fuel and in the production of chemical products.

为了实现上述目的，本发明的利用工业废气联产高清洁燃料甲醇的制备工艺包括：（1 ) 引入工业废气，作为原料；（2) 对工业废气进行处理，分别制取生成物 O₂、 CO 、 ¾气体中的一种或两种；（3 )将生成物气体引入合成塔；（4) 通过计算机自动控制进入合成塔中各种气体的比例，确定合成塔中的各种气体成分，并对合成塔中缺少的气体自动进行补充，配入缺少的气体，直至达到所需比例为止，合成甲醇；（5 ) 将最终生产的高清洁燃料甲醇输入储存基地，待用。 In order to achieve the above object, the preparation process of the invention for co-production of high-clean fuel methanol using industrial waste gas comprises: (1) introducing industrial waste gas as a raw material; (2) treating industrial waste gas to separately produce products O ₂ and CO (3) introducing a product gas into the synthesis tower; (4) automatically controlling the proportion of various gases entering the synthesis tower by a computer to determine various gas components in the synthesis tower, and The gas lacking in the synthesis tower is automatically replenished, and the missing gas is added until the desired ratio is reached to synthesize methanol; (5) The finally produced high-clean fuel methanol is input to the storage base for use.

所述的工业废气可以选用煤炭气化、电厂废气、焦化厂废气、炼钢厂高炉废气、化工厂废气中的一种或多种，进行处理，合成甲醇。 The industrial waste gas may be treated with one or more of coal gasification, power plant waste gas, coking plant waste gas, steel mill blast furnace waste gas, and chemical plant waste gas to synthesize methanol.

最终生产的高清洁燃料甲醇成分中含 C033%左右、含 H₂66%左右。 The final high-purity fuel methanol component contains about C033% and about 66% H ₂ .

下面结合附图和较佳实施例对本发明的优点和其它特点做进一步描述。附图说明图 1为本发明的整体工艺流程示意图。具体实施方式 Advantages and other features of the present invention are further described below in conjunction with the drawings and preferred embodiments. DRAWINGS Figure 1 is a schematic view of the overall process flow of the present invention. detailed description

本发明的利用工业废气联产高清洁燃料甲醇的制备工艺，是利用煤炭气化、电厂废气、焦化厂废气、炼钢厂高炉废气、化工厂废气等工业废气作为原料，对引入的工业废气中的一种或多种进行处理，分别制取生成物 O₂、 CO 、 H₂ 气体中的一种或两种。再将生成物气体引入合成塔，合成塔可选用林达低温合成塔或其它合成塔。根据需要向合成塔中配入相应的缺少气体，直至达到所需比例为止，合成出高清洁燃料 CH₃OH。所制得的高清洁燃料成分中含有 CO33% 左右和 ¾66%左右。图 1示出本发明的整体工艺流程示意图。 The preparation process of using the industrial waste gas to produce high-clean fuel methanol is to use industrial gas such as coal gasification, power plant waste gas, coking plant waste gas, steelmaking plant blast furnace waste gas, chemical plant waste gas, etc. as raw materials, and is introduced into the industrial waste gas. One or more of the treatments are performed to obtain one or both of the products O ₂ , CO , and H ₂ gases, respectively. The product gas is introduced into the synthesis tower, and the synthesis tower can be selected from a Linda low temperature synthesis tower or other synthesis tower. A high clean fuel CH ₃ OH is synthesized by incorporating a corresponding lack of gas into the synthesis column as needed until the desired ratio is reached. The high clean fuel composition produced contains about 33% CO and about 3⁄466%. Figure 1 shows a schematic diagram of the overall process flow of the present invention.

工艺（1 ) Process (1)

煤炭气化处理：本发明的煤炭气化处理是煤炭地下气化处理，就是将处于地下的煤炭直接进行有控制的燃烧，通过对煤的热作用及化学作用而产生可燃 . 气体。气化过程如下： Coal gasification treatment: The coal gasification treatment of the present invention is underground coal gasification treatment, that is, the underground coal is directly subjected to controlled combustion, and flammable gas is generated by the thermal action and chemical action on coal. The gasification process is as follows:

1 ) 媒质大分子周围的官能团，以挥发分解的形式脱去，某些交联键断裂，氢化芳烃裂解并挥发析出，形成烃类轻质气体。氢化芳烃还可以转化成附加的芳香部分，芳香部分转化成小的碳（C ) 微晶， C微晶聚集形成煤焦。 1) The functional groups around the macromolecule of the medium are removed by volatilization, some crosslinks are broken, and the hydrogenated aromatics are cleaved and volatilized to form a hydrocarbon light gas. The hydrogenated aromatic hydrocarbons can also be converted to additional aromatic moieties, the aromatic moieties converted to small carbon (C) crystallites, and the C crystallites aggregate to form coal char.

2)在脱挥发分解过程中，生成活性的、不稳定的 C，它们可以与周围气体直接作用而气化，也可以失活而形成煤焦。 2) During the devolatilization decomposition process, active, unstable C is formed, which can be vaporized directly by the surrounding gas, or can be deactivated to form coal char.

3 ) 析出的挥发分解与气相的 O₂、 H₂O、 ¾和甲垸（CH₄)。 3) The volatile decomposition of the precipitate and O ₂ , H ₂ O, _3⁄4 and formazan (CH ₄ ) in the gas phase.

4) 由 C微晶形成的煤焦，可以气化成煤气，也可以进一步缩聚成焦炭。 ' 煤炭地下气化就是在地下煤层中实现上述四个步骤而产生可燃气体的过程。.这一过程是煤炭经进气炉被送进地下气化炉的气化通道，在气化通道中的氧化区、还原区和干馏干燥区三个反应区域内来实现煤炭地下气化，如图 1所示。 4) Coal char formed by C crystallites can be gasified into gas or further polycondensed into coke. 'Underground coal gasification is the process of producing the combustible gas in the above four steps in the underground coal seam. This process is a gasification channel in which coal is sent to an underground gasifier via an inlet furnace, and underground coal gasification is realized in three reaction zones of an oxidation zone, a reduction zone and a dry distillation zone in the gasification channel, such as Figure 1 shows.

' 地下气化炉气化通道中的三个反应区域的反应过程- 'Reaction process of three reaction zones in the gasification channel of underground gasifiers -

1 ) 氧化区：主要是气化剂中的 0₂与煤层中的 C发生多项化学反应，产生大量的热，使附近煤层炽热。 1) oxidation zone: ₀₂ with the main seam gasifying agent occurs in a number of chemical reaction C, a large amount of heat, near the hot coal seam.

反应式： x c+ 0₂ ·_ ^ 2 ( λ -ΐ ) C0+ (2- λ ) C0₂ 式中 λ为常熟。 Reaction formula: x c+ 0 ₂ ·_ ^ 2 ( λ -ΐ ) C0+ (2- λ ) C0 ₂ Where λ is a permanent ripe.

2)还原区：主要反应为 CO₂、 H₂O和炽热的 C相遇，在足够高的温度下， CO₂还原成 CO， H₂O分解为 H₂和 CO。还原反应为吸热反应，该吸热反应使气化通道温度降低，当通道温度降低到不能再继续进行上述还原反应时，还原区的反应结束。 2) Reduction zone: The main reaction is CO ₂ , H ₂ O and hot C. At a sufficiently high temperature, CO _{2 is} reduced to CO, and H ₂ O is decomposed into H ₂ and CO. The reduction reaction is an endothermic reaction which lowers the temperature of the gasification passage, and when the passage temperature is lowered until the above reduction reaction can no longer be carried out, the reaction in the reduction zone ends.

3 )干馏干燥区：通过还原区后，气体温度仍然很高，这一热作用使煤热分解，而析出干馏煤气。形成的可燃组分主要是含 H₂、 CO和 CH₄的煤气。 3) Dry distillation drying zone: After passing through the reduction zone, the gas temperature is still high, and this thermal action causes the coal to thermally decompose and precipitate the dry distillation gas. The flammable components formed are primarily gas containing H ₂ , CO and CH ₄ .

生成的可燃气体经排气孔排出，被引入合成塔。典型的煤气成分中 CO的含量达到 65%以上， H₂的含量达到 30%以上。再利用电厂或其他工业废气 C0₂ 制取 0₂和 CO，从而生产出高清洁燃料 CH₃OH, 用于电厂发电，居民生活和工业使用，或作为高清洁汽车燃料及生产化工产品。所制得的高清洁燃料 CH₃OH成分中含有 CO33%左右和 H₂66%左右。 The generated combustible gas is discharged through the vent hole and introduced into the synthesis column. The typical gas component has a CO content of 65% or more and a H ₂ content of 30% or more. The plant or other industrial waste gas C0 _{2 is} used to produce 0 ₂ and CO to produce high clean fuel CH ₃ OH for power generation, residential and industrial use, or as a high-clean automotive fuel and chemical product. The high clean fuel CH ₃ OH component produced contains about 33% CO and about 66% H ₂ .

所述煤炭气化的设备工艺，可选用成熟设备工艺：恩德炉、灰熔聚、德士古、谢尔气流床气化炉等来完成煤炭气化获得 CO和 H₂原料的目的。 The equipment for coal gasification can be selected from mature equipment processes: Ende furnace, ash fusion polymerization, Texaco, Schell's entrained flow gasifier, etc. to achieve the purpose of obtaining CO and H ₂ raw materials by coal gasification.

工艺（2) Process (2)

电厂废气处理：参见图 1，本发明的电厂废气处理是将电厂废气 co₂经水除尘装置除尘后，在气体分离装置中采用变压吸附法、溶剂吸收法、吸附精馏法、化学吸收法中的任一种进行脱硫、脱氮、脱氧，制取 O₂和 CO气体，被引入合成塔，配入 ¾，合成高清洁燃料 CH₃OH，其成分中含有 C033%左右、含有1¾66%左右。并生产出硫磺、氮肥和其他化工产品，，作他用。 Power plant exhaust gas treatment: Referring to Figure 1, the power plant exhaust gas treatment of the present invention is to remove the dust of the power plant exhaust gas co ₂ by the water dust removing device, and adopt the pressure swing adsorption method, the solvent absorption method, the adsorption distillation method, the chemical absorption method in the gas separation device. Any one of them is desulfurized, denitrified, deoxidized, and O ₂ and CO gas are produced, introduced into a synthesis tower, and mixed into 3⁄4 to synthesize a high clean fuel CH ₃ OH, which contains about C033% and contains about 13⁄466%. . It also produces sulphur, nitrogen and other chemical products for other uses.

所述的电厂废气处理也可以将电厂废气 CO₂直接配入 H₂，采用变压吸附法、溶剂吸收法、吸附精馏法、化学吸收法中的任一种进行脱硫、脱氮，释放 0₂后，被引入合成塔，合成高清洁燃料 C¾OH，其成分中含有 CO33%左右和 H₂66%左右。并生产出硫磺、氮肥和其他化工产品，作他用。 The power plant exhaust gas treatment can also directly integrate the power plant exhaust gas CO ₂ into H ₂ , and adopt any one of a pressure swing adsorption method, a solvent absorption method, an adsorption rectification method, and a chemical absorption method to perform desulfurization, denitrification, and release of 0. _{After 2} , it was introduced into a synthesis tower to synthesize a high clean fuel C3⁄4OH, which contained about 33% CO and about 66% H ₂ . It also produces sulphur, nitrogen and other chemical products for other uses.

工艺（3) Process (3)

11₂的获得：可以选用较成熟的工艺设备进行生产，例如：煤炭地下气化转换1¾的生产工艺以及水电解等工艺生产 H₂。如果采用水电解工艺比较成熟和简单，又能同时获得 0₂和 ¾，作为原料配入合成塔。水电解工艺设备有几十种，常用的有水电解槽、多孔电极槽、高温电解槽等等，均适用于本发明的制备工艺。 11 ₂ acquisition: It is possible to use more mature process equipment for production, such as: production process of coal underground gasification conversion 13⁄4 and process of water electrolysis to produce H ₂ . If the water electrolysis process is relatively mature and simple, it can simultaneously obtain 0 ₂ and 3⁄4, and is used as a raw material in the synthesis tower. There are dozens of water electrolysis process equipments, commonly used water electrolysis tanks, porous electrode tanks, high temperature electrolysis tanks, etc., all suitable for the system of the present invention. Preparation process.

工艺（4) Craft (4)

焦化厂废气处理：参见图 1 是将魚化厂废气经水除尘装置除尘后，在气体分离装置中采用变压吸附法、溶剂吸收法、吸附精馏法、化学吸收法中的任一种进行脱硫、脱氮后，制取典型的富 ¾低 CO气体，其气体成分中含 H₂61% 以上、含 CO17%左右，被引入合成塔，配入 CO或煤炭地下气化制取的煤气，合成高清洁燃料 CH₃OH，其成分中含有 CO33%左右和 ¾66%左右。并生产出硫磺、氮肥和其他化工产品，作他用。 Coking plant waste gas treatment: See Figure 1 for the desulfurization of the fish chemical plant waste water through the water dedusting device, using any one of the pressure swing adsorption method, the solvent absorption method, the adsorption rectification method, and the chemical absorption method in the gas separation device. After desulfurization and denitrification, a typical rich 3⁄4 low CO gas is produced, and the gas component contains more than 61% of H ₂ and contains about 17% of CO. It is introduced into the synthesis tower and is equipped with CO or coal gas obtained by underground gasification. The high-purity fuel CH ₃ OH is synthesized, and its composition contains about 33% CO and about 3⁄466%. It also produces sulphur, nitrogen and other chemical products for other uses.

工艺（5) Craft (5)

炼钢厂高炉废气处理：参见图 1，是将炼钢厂高炉废气经水除尘装置除尘后，在气体分离装置中采用变压吸附法、溶剂吸收法、吸附精馏法、化学吸收法中的任一种进行脱硫、脱氮后，制取富 CO和低气体，被引入合成塔，配入 H₂，合成高清洁燃料 CH₃OH，其成分中含有 CO33%左右和 H₂66%左右。并生产出硫磺、氮肥和其他化工产品，作他用。 Steelmaking blast furnace waste gas treatment: See Figure 1, after the steelmaking blast furnace exhaust gas is dedusted by the water dedusting device, in the gas separation device, the pressure swing adsorption method, the solvent absorption method, the adsorption rectification method, the chemical absorption method After desulfurization and denitrification, any of the CO-rich and low-gas gases are introduced into the synthesis tower and H _{2 is added} to synthesize a high-purity fuel CH ₃ OH, which contains about 33% CO and about 66% H ₂ . It also produces sulphur, nitrogen and other chemical products for other uses.

工艺（6) Craft (6)

同时利用相同数量的焦化厂废气以及炼钢厂高炉废气合成高清洁燃料 Simultaneously using the same amount of coking plant waste gas and steelmaking blast furnace exhaust gas to synthesize high clean fuel

CH₃OH。并生产出硫磺、氮肥和其他化工产品，作他用。 CH ₃ OH. It also produces sulphur, nitrogen and other chemical products for other uses.

综上所述，根据所釆用的原料，对进入林达低温合成塔或其它合成塔中的各种气体通过计算机自动控制，确定合成塔中的气体成分，并根据需要对合成塔中缺少的气体进行补充，最终使得生产出来的高清洁燃料成分中含 CO33% 左右、含 ¾66%左右。 In summary, according to the raw materials used, various gases entering the Linda low-temperature synthesis tower or other synthesis towers are automatically controlled by a computer to determine the gas composition in the synthesis tower, and if necessary, the missing in the synthesis tower The gas is replenished, which ultimately results in a high clean fuel composition containing about 33% CO and about 3⁄466%.

燃料中的硫元素、氮元素和其它化学元素也被气体分离装置净化和收集，并生产出硫磺、氮肥和其他化工产品，使燃料成分达到如下标准，见表 2 表 2

根据实际情况，可以制定出选择使用哪几种原料合成高清洁燃料 CH₃OH 才是最经济、最合理的配置方案。例如：发电厂废气 C0₂采用气体分离装置进行脱氧并获得 CO，再配入电解水生产的 H₂，或者使用焦化厂废气生产的高 H₂ 气体来制取高清洁煤气才是理想的方案。也可利用富 H₂的焦化厂废气与煤炭地下气化后所获得的富 CO气体混合，不足的部分再配入 H₂或 CO，也是最佳的配置方案。 Sulfur, nitrogen and other chemical elements in the fuel are also purified and collected by a gas separation unit to produce sulfur, nitrogen and other chemical products, so that the fuel composition meets the following criteria, see Table 2, Table 2.

According to the actual situation, it can be determined that the choice of which raw materials to use to synthesize high clean fuel CH ₃ OH is the most economical and reasonable configuration. For example: Power plant exhaust gas C0 ₂ uses a gas separation device It is an ideal solution to deoxidize and obtain CO, then blend it into H ₂ produced by electrolyzed water, or use high H ₂ gas produced by coking plant waste gas to produce high clean gas. It is also possible to use the H ₂ -rich coking plant exhaust gas to mix with the CO-rich gas obtained after underground coal gasification, and the insufficient portion is further blended with H ₂ or CO, which is also the best configuration.

然后，将所生产的高清洁燃料 CH₃OH进行储备，这种高清洁燃料可用于电厂发电，居民生活和工业使用，或作为高清洁汽车燃料以及生产化工产品等。不论应用于何种行业，高清洁燃料 CH₃OH都不会产生 00₂及其它污染物，是当今世界上真正的高清洁能源。 Then, the high-purity fuel CH ₃ OH produced is stored. This high-clean fuel can be used for power generation, residential and industrial use, or as a high-cleaning vehicle fuel and chemical products. Regardless of the industry, the high clean fuel CH ₃ OH does not produce 00 ₂ and other pollutants. It is truly a high clean energy source in the world today.

如图 1所示，所生产的高清洁燃料 CH₃OH通过储存基地，应用到工业生产和人民生活的各个方面：用于居民生活、工业生产、作为汽车高清洁燃料、生产化工产品以及清洁发电等等。工业实用性 As shown in Figure 1, the high-purity fuel CH ₃ OH produced is applied to various aspects of industrial production and people's lives through storage bases: for residential life, industrial production, high-clean fuel for automobiles, production of chemical products, and clean power generation. and many more. Industrial applicability

本发明利用工业废气联产高清洁燃料 CH₃OH的制备工艺，完全是利用煤炭气化、电厂废气、焦化厂废气、炼钢厂高炉废气、化工厂废气等工业废气作为原料，经过相应的工艺处理后联产出高清洁燃料 CH₃OH，同时在处理过程中去除其它微小的污染物，废气中的硫元素、氮元素和其它化学元素也被气体分离装置净化并收集，生产出硫磺、氮肥和其他化工产品等。因此本发明的制备工艺的废气利用率高，可节约能源，降低污染源排放量，合成 CH₃OH是目前唯一能同时解决能源问题和环境保护问题的高清洁燃料。另外，由于本发明的煤炭气化处理是煤炭地下气化处理，将处于地下的煤炭直接进行有控制的燃烧，通过对煤的热作用及化学作用而产生可燃气体。该过程集建井、采煤、地面气化三大工艺为一体，变传统的物理釆煤为化学釆煤，省去了庞大的煤炭开采、运输、洗选、气化等工艺的设备，因而具有安全性好、投资少、效益高、污染少等优点，是从根本上解决传统的煤炭开釆和使用方法存在的一系列技术和环境问题的重要途径。 The invention utilizes industrial waste gas to produce a high clean fuel CH ₃ OH preparation process, and completely utilizes industrial gas such as coal gasification, power plant waste gas, coking plant waste gas, steelmaking plant blast furnace waste gas, chemical plant waste gas, etc. as raw materials, and corresponding processes After treatment, the high clean fuel CH ₃ OH is produced, and other tiny pollutants are removed during the treatment. The sulfur, nitrogen and other chemical elements in the exhaust gas are also purified and collected by the gas separation device to produce sulfur and nitrogen fertilizer. And other chemical products. Therefore, the preparation process of the present invention has high utilization rate of exhaust gas, can save energy, and reduce emission of pollution sources. The synthesis of CH ₃ OH is currently the only high-cleaning fuel capable of simultaneously solving energy problems and environmental protection problems. In addition, since the coal gasification treatment of the present invention is underground coal gasification treatment, the underground coal is directly subjected to controlled combustion, and a combustible gas is generated by thermal action and chemical action on coal. The process integrates three processes of well construction, coal mining and surface gasification. The traditional physical coal is chemical tantalum, which saves a huge amount of equipment for coal mining, transportation, washing, gasification and so on. It has the advantages of good safety, low investment, high efficiency and less pollution. It is an important way to fundamentally solve a series of technical and environmental problems existing in traditional coal mining and use methods.

Claims

权利要求 Rights request

1、利用工业废气联产高清洁燃料甲醇的制备工艺，包括： ( 1 )引入工业废气，作为原料；（2)对工业废气进行处理，分别制取生成物 0₂、 CO 、 H₂气体中的一种或两种；（3 ) 将生成物气体引入合成塔；（4) 通过计算机自动控制进入合成塔中各种气体的比例，确定合成塔中的各种气体成分，并对合成塔中缺少的气体自动进行补充，配入缺少的气体，直至达到所需比例为止，合成甲醇； ( 5 ) 将最终生产的高清洁燃料甲醇输入储存基地，待用。 1. The preparation process of industrial high-clean fuel methanol by industrial waste gas, including: (1) introducing industrial waste gas as raw material; (2) treating industrial waste gas to separately produce product 0 ₂ , CO , H ₂ gas (3) introducing the product gas into the synthesis tower; (4) automatically controlling the proportion of various gases entering the synthesis tower by computer, determining various gas components in the synthesis tower, and The missing gas is automatically replenished, and the missing gas is dispensed until the desired ratio is reached to synthesize methanol; (5) The final high-purity fuel methanol is fed into the storage base for use.

2、根据权利要求 1所述的制备工艺，其特征在于，所述的工业废气可以是煤炭气化、电厂废气、焦化厂废气、炼钢厂高炉废气、化工厂废气中的一种或多种，进行处理，合成甲醇。 The preparation process according to claim 1, wherein the industrial waste gas may be one or more of coal gasification, power plant waste gas, coking plant waste gas, steel mill blast furnace waste gas, and chemical plant waste gas. , processing, synthesizing methanol.

3、根据权利要求 2所述的制备工艺，其特征在于，所述的煤炭气化处理是煤炭地下气化处理，就是将地下煤炭经进气炉被送进地下气化炉的气化通道，在气化通道中的氧化区、还原区和干馏干燥区三个反应区域内进行反应，实现煤炭产生可燃气体，经排气孔排出，被引入合成塔，典型的煤气成分中 CO的含量达到 65%以上， H₂的含量达到 30%以上；再利用电厂或其他工业废气 CO₂ 制取 0₂和 CO，配入，生产出高清洁燃料 CH₃OH，其成分中含有 CO33%左右和 ¾66%左右。 3. The preparation process according to claim 2, wherein the coal gasification treatment is underground coal gasification treatment, that is, the underground coal is sent to the gasification passage of the underground gasification furnace through the intake furnace, The reaction is carried out in three reaction zones of the oxidation zone, the reduction zone and the dry distillation zone in the gasification channel, so that the coal generates combustible gas, is discharged through the vent hole, and is introduced into the synthesis tower, and the CO content of the typical gas component reaches 65. More than %, the content of H ₂ is more than 30%; then using the power plant or other industrial waste gas CO _{2 to} make 0 ₂ and CO, and blending, to produce a high clean fuel CH ₃ OH, the composition contains about 33% CO and 3⁄466% about.

4、根据权利要求 3所述的制备工艺，其特征在于，所述的在氧化区的反应主要是气化剂中的 0₂与煤层中的 C发生多项化学反应，产生大量的热，使附近煤层炽热；所述的在还原区的反应主要是 00₂和1¾0与炽热的 C相遇， C0₂ 还原成 CO， H₂O分解为 1¾和（ 0，还原反应使气化通道温度降低，当气化通道温度降低到不能再继续进行上述还原反应时，还原区的反应结束；所述的在干馏干燥区的反应是煤热分解，析出干馏煤气，形成的可燃组分主要是含 H₂、 CO和 CH₄的煤气。 4. The preparation process as claimed in claim 3, wherein said oxidation reaction zone ₀₂ with the main seam gasifying agent occurs in a number of chemical reactions C, a large amount of heat, so that The nearby coal seam is hot; the reaction in the reduction zone is mainly 00 ₂ and 13⁄40 meets the hot C, C0 _{2 is} reduced to CO, H ₂ O is decomposed to 13⁄4 and (0, the reduction reaction lowers the temperature of the gasification channel, when When the temperature of the gasification passage is lowered until the above reduction reaction can no longer be continued, the reaction in the reduction zone ends; the reaction in the dry distillation drying zone is thermal decomposition of coal, and the dry distillation gas is precipitated, and the combustible component formed mainly contains H ₂ , CO and CH ₄ gas.

5、根据权利要求 2所述的制备工艺，其特征在于，所述的电厂废气处理是将电厂废气。0₂经水除尘装置除尘后，在气体分离装置中釆用变压吸附法、溶剂吸收法、吸附精熘法、化学吸收法中的任一种进行脱硫、脱氮、脱氧，制取 0₂和 0气体，被引入合成塔，配入 H₂，合成高清洁燃料 CH₃OH，其成分中含有 CO33%左右和 H₂66%左右，并生产出硫磺、氮肥和其他化工产品，作他用。 5. The process according to claim 2, wherein the power plant exhaust gas treatment is a power plant exhaust gas. 0 ₂ After dedusting by the water dedusting device, desulfurization, denitrification and deoxidation are carried out in the gas separation device by any of pressure swing adsorption method, solvent absorption method, adsorption fine method and chemical absorption method, to obtain 0 ₂ And 0 gas, introduced into the synthesis tower, equipped with H ₂ , to synthesize high clean fuel CH ₃ OH, in its composition It contains about 33% CO and about 66% H ₂ and produces sulfur, nitrogen fertilizer and other chemical products for other purposes.

6、根据权利要求 2所述的制备工艺，其特征在于，所述的电厂废气处理是将电厂废气 (：0₂直接配入 ¾，采用变压吸附法、溶剂吸收法、吸附精馏法、化学吸收法中的任一种进行脱硫、脱氮，释放 O₂后，被引入合成塔，合成清洁燃料 CH₃OH，其成分中含有 CO33%左右和 H₂66%左右，并生产出硫磺、氮肥和其他化工产品，作他用。 The preparation process according to claim 2, wherein the power plant exhaust gas treatment is to directly integrate the power plant exhaust gas (0 ₂ , using a pressure swing adsorption method, a solvent absorption method, an adsorption distillation method, Any one of the chemical absorption methods performs desulfurization and denitrification, releases O ₂ , and is introduced into a synthesis tower to synthesize a clean fuel CH ₃ OH, which contains about 33% CO and about 66% H ₂ and produces sulfur. Nitrogen fertilizers and other chemical products are used for other purposes.

7、根据权利要求 2所述的制备工艺，其特征在于，所述的焦化厂废气处理是将焦化厂废气经水除尘装置除尘后，在气体分离装置中釆用变压吸附法、溶剂吸收法、吸附精馏法、化学吸收法中的任一种进行脱硫、脱氮后，制取典型的富 H₂和低 CO气体，被引入合成塔，配入 CO或煤炭地下气化制取的煤气，合成高清洁燃料 CH₃OH，其成分中含有 CO33%左右和 ¾66%左右，并生产出硫磺、氮肥和其他化工产品，作他用。 The preparation process according to claim 2, wherein the coking plant waste gas treatment is to dedust the coking plant waste gas through a water dedusting device, and the pressure separation adsorption method and the solvent absorption method are used in the gas separation device. After desulfurization and denitrification, any of the adsorptive rectification method and the chemical absorption method are used to prepare a typical H ₂ -rich and low CO gas, which is introduced into a synthesis tower, and is coupled with CO or coal gas for underground gasification. , the synthesis of high clean fuel CH ₃ OH, its composition contains about 33% CO and 3⁄466%, and produces sulfur, nitrogen fertilizer and other chemical products for other uses.

8. 根据权利要求 2所述的制备工艺，其特征在于，所述的炼钢厂高炉废气处理是将炼钢厂高炉废气经水除尘装置除尘后，在气体分离装置中采用变压吸附法、溶剂吸收法、吸附精馏法、化学吸收法中的任一种进行脱硫、脱氮后，制取富 CO和低 ¾气体，被引入合成塔，配入 ¾，合成高清洁燃料 CH₃OH，其成分中含有 C033%左右和 ¾66%左右，并生产出硫磺、氮肥和其他化工产品，作他用。 The preparation process according to claim 2, wherein the blast furnace exhaust gas treatment of the steelmaking plant adopts a pressure swing adsorption method in the gas separation device after the blast furnace exhaust gas of the steelmaking plant is dedusted by the water dust removing device. Solvent absorption method, adsorption rectification method, chemical absorption method for desulfurization, denitrification, preparation of CO-rich and low 3⁄4 gas, is introduced into the synthesis tower, is formulated into _3⁄4 , and synthesizes high clean fuel CH ₃ OH, Its composition contains about C033% and about 3⁄466%, and produces sulfur, nitrogen fertilizer and other chemical products for other purposes.

9. 根据权利要求 2所述的制备工艺，其特征在于，将相同数量的焦化厂废气以及炼钢厂高炉废气经水除尘装置除尘后，在气体分离装置中釆用变压吸附法、溶剂吸收法、吸附精馏法、化学吸收法中的任一种进行脱硫、脱氮后，制含。0和 1¾气体，被引入合成塔，合成高清洁燃料 CH₃OH，其成分中含有 C033%左右和 H₂66%左右，并生产出硫磺、氮肥和其他化工产品，作他用。 9. The preparation process according to claim 2, wherein the same amount of coking plant exhaust gas and steelmaking blast furnace exhaust gas are dedusted by a water dedusting device, and the pressure separation adsorption method and solvent absorption are used in the gas separation device. Any one of the method, the adsorption rectification method, and the chemical absorption method is subjected to desulfurization and denitrification, and is contained. 0 and 13⁄4 gases are introduced into the synthesis tower to synthesize high clean fuel CH ₃ OH, which contains about C033% and H ₂ 66%, and produces sulfur, nitrogen fertilizer and other chemical products for other purposes.