vpsatech-blog

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vpsa technology

http://www.vpsatech.com/product/vpsa-oxygen/

Based on the high-efficient lithium-based VPSA-O2 adsorbent PU-8, combining with the unique airflow distribution technology, advanced process design and reliable supplementary devices, PIONEER has successfully ensured energy-efficient and large-scale VPSA-O2 plants to provide O2 product at a lower cost. PIONEER has built up over 100 sets of VPSA-O2 plants and taken the lion share in the field of VPSA-O2 in China. The VPSA-O2 technology won the first prize for Science and Technology Progress by the Ministry of Education. PIONEER is committed to mutual development with the customers, by providing economical O2utilization program, optimization of existing plants or on-site gas supply.

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psa h2 purification unit

http://www.vpsatech.com/product/psa-h2-plant/

Using the independently-developed and high-efficiency PSA-H2 adsorbent, PIONEER's rapid, low consumption and high-efficiency PSA-H2 process has the following features, low investment and operating cost, high purity and recovery of gas product, flexibility of feed gas and easy load regulation. PIONEER's Rapid PSA-H2 technology can purify H2 from shift gas, coke oven gas, semiwater gas, methanol purge gas, methanol pyrolysis gas, ammonia pyrolysis gas, formaldehyde exhaust, refinery reformed gas, refinery FCC dry gas and refined gas.

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separation of co by psa

http://www.vpsatech.com/product/psa-co-plant/

PIONEER's independently-developed and produced PSA-CO adsorbent PU-1 was granted the Chinese, USA and Canadian patents. PU-1 has ultra-high adsorption capacity and selectivity for CO, which are the key features for PSA-CO technology which reaches the advanced level in the world. PIONEER originates the high and low consumption PSA-CO technology based on PU-1 adsorbent, achieving the efficient separation of CO from nitrogen, methane and other components, which is of great importance for the carbonyl synthesis industry. This technology won the Second Prize for National Technology Invention. PIONEEER has designed and constructed dozens of PSA-CO plants for the clients, and becomes the highest shares holder in market with the features including low cost of gas product, high purity, high yield, flexibility of feed gas, moderate operating conditions and easy load regulation , which brings much economic earning and market competitiveness to the user.

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phosphorus off-gas purification

http://www.vpsatech.com/product/phosphorus-off-gas-purification.html

The content of CO in the yellow phosphorus tail gas reaches up to 90%. Yellow phosphorus tails gas belongs to the ore smelting tail gas whose components are complicated and impurities are various. The existence of phosphorus and sulfur in the tail gas utilization may corrode the equipment and shorten the life of the catalyst, so the utilization rate is quite low.

The yellow phosphorus resource is abundant in China and deposit reaches 800-1000 thousand tons, which weighs 80% in the world. In absence of the efficiency and advanced purification technique and utilization mode, the yellow phosphorus plant only burns little tail gas to dry the raw material or for the boiler combustion but most of the tail gas is discharged, thus greatly wasting the resource, intensifying the environmental pollution and obstructing the energy saving and emission reduction.

Besides, the resource utilization of C1 chemical products requires deep purification of the impurity in the raw gas, but impurities such as phosphorus, sulfur, arsenic, cyanogens and fluorine in the yellow phosphorus tail gas may result in the toxication of the chemical catalyst and corrosion of the material. Purification depth of the impurity determines the utilization value of the yellow phosphorus tail gas.

Application of PIONEER technology in the yellow phosphorus industry

Utilization mode of the tail gas depends on the purification degree. There are three existing purification techniques of the yellow phosphorus tail gas: the traditional alkali washing method can only be applied to the extensive purification; the temperature-change PSA method is complicated and consumes much energy; the general catalytic oxidation method may not realize the continuous dephosphorization and consumes much catalyst. Recently, in view of the atmosphere and purification situation of the yellow phosphorus tail gas, PIONEER has developed a brand new dephosphorization catalyst, the DePOx catalyst, which may realize the continuous dephosphorization with various impurities in the yellow phosphorus tail gas that the dephosphorization process is not renewed and is simple in the technique. The dephosphorized gas may be used in the combustion power generation or synthesis of the C1 chemical production in combination with other purification techniques.

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purification of co from converter gas

http://www.vpsatech.com/product/industrial-gas-purification/steel-tail-gas-purification/

STEEL TAIL GAS PURIFICATIONIn the process of steel production, a large number of blast furnace gas, converter gas, coke oven gas, rich in carbon monoxide, hydrogen and methane are valuable components, which are the main secondary energy sources of steel works. 55-60% of H2 is contained in coke oven gas, converter gas and blast furnace gas respectively containing 60% ~ 60% and ~25% CO, so steel exhaust completely can be used as a source of chemical synthesis of CO and H2 needed. PIONEER, on the basis of its mature and leading PSA technology, according to the characteristics of blast furnace gas, developed the process of the formation of a unique CO separation technology of blast furnace gas, by which blast furnace gas can be used from the low cost of mass separation CO. CO is a kind of important raw material with chemical synthesis. It can purify CO from the converter gas to over 99%, which is used for the production of ethylene glycol, acetic acid, dimethyl carbonate, polycarbonate, TDI, DMF and other chemical products, thus significantly enhancing the added value of the gas. To obtain CO by the use of converter gas has a large cost advantage. With the rapid development in the non-steel industry, it has attracted attention by many domestic and overseas famous iron and steel enterprises.

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recovery of tail gas from calcium carbide furnace

http://www.vpsatech.com/product/calcium-carbide-furnace-to-co.html

There are nearly 400 calcium carbide manufacturing enterprises in China at present whose total annual productivity exceeds 15 million tons. More than 15 billion m3  tail gas of calcium carbide furnace is produced in China every year. It mainly contains CO (75%~90%) which is total If fully discharged, equaling to the waste of 2.4 million tons of standard coal, and emits 12 million tons of CO2 and more than 900,000 tons of dust every year. It is the best way to save the energy, reduce the emission and transform the waste to treasure by reasonably utilizing CO.

Application of PSA-CO technology to the calcium carbide industry

Purification of CO by the PSA-CO technology may obtain the 99% high-purity CO and synthesize the high value-added chemical products, such as MEG, methyl carbonate, acetic acid, methanol, TDI and DMF.

Economic Benefit

More than 75% of the tail gas of calcium carbide furnace is CO. Purification of CO by the PSA technology and synthesis of the high value-added chemical product such as MEG largely reduce the raw material cost of the high-purity CO. The new-type purification device of PIONEER not only utilizes the high value-added tail gas of calcium carbide furnace but also gives a new idea for the development of the technology of synthesis gas-to-MEG.

Successful Case

Xinjiang Tianye Group adopts the unique PSA technology of PIONEER to separate the high-purity CO from the tail gas of calcium carbide furnace to synthesize MEG. As the first industrial device synthesizing MEG by the tail gas of calcium carbide furnace in China, it completely solves the problem of tail gas reclamation. Besides, it not only promotes the emission reduction but also largely reduces the raw material cost of high-purity CO which saves a lot gas generation expenses.

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recovery of bf-gas

http://www.vpsatech.com/product/bfg-to-carbon-monoxide.html

Separation of CO from blast furnace gas is an international problem, which is mainly due to the blast furnace gas also contains a large number of N2 and CO2. Because of the close boiling point of N2 and CO, the traditional cryogenic rectification process cannot be used to separate CO from blast furnace gas. The adsorption of CO and N2 is low, and the adsorption of CO2 is easy to poisoning and deactivation, so the conventional pressure swing adsorption method cannot be used for CO separation of blast furnace gas.

PIONEER, on the basis of its mature and leading PSA technology,  according to the characteristics of blast furnace gas, developed the process of the formation of a unique CO separation technology of blast furnace gas,  by which blast furnace gas can be used from the low cost of mass separation CO. The enriched CO gas can be used for the following three purposes:

1. To produce high value-added chemical products

CO is a kind of important raw material with chemical synthesis which can be purified to 99% from the blast furnace for the production of ethylene glycol, acetic acid, dimethyl carbonate, polycarbonate, TDI, DMF and other chemical products, thus significantly enhancing the added value of the gas. To obtain CO by the use of blast furnace gas has a large cost advantage. With the rapid development in the non-steel industry, it has attracted attention by many domestic and overseas famous iron and steel enterprises.

2. To be premium fuel

The carbon monoxide purified up to 70% from blast furnace, whose heat value is up to 8200kj/nm3, can replace the coal and natural gas for metallurgy, such as the combustion section in iron making links.

3. To be reducing gas of blast furnace injection

The research shows that, to increase concentration of CO from the blast furnace gas and converter gas to above 45%, by  the use of separation technology, and then to inject into the blast furnace will significantly improve the carbon monoxide and hydrogen content of the furnace, and indirect reduction acceleration of the sinter in the furnace shell, which helps improve the production and heat efficiency.

Economic Benefit Analysis

PIONEER makes the following calculation according to the present coal-chemistry industry situation. To produce 1m3 CO with high purity by separation and purifying of CO from coal gas cost ￥2.00 at the current price of coal, but it only cost less than ￥1.00 to produce 1m3 CO with high purity by separation and purifying of CO from BFG with PIONEER’s technology. This means Pioneer can save 50% of the CO producing cost than coal gas making.

Successful Cases

This technology has been implemented by Hengyang Steel Group. The project design of BFG handling capacity of 67000 Nm3/h, to17500 Nm3 preparation of CO product gas, purity of 70%. CO-enriched will be used as an alternate to natural gas and weighs 30% of total gas consumption at full capacity. It created significant economic benefits to the enterprise, and the elimination of the BFG emission, and a significant reduction in carbon emissions.

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co-containing tail gas utilization

PKU PIONEER: Break the Dilemma of Industrial Tail Gas Utilization

http://www.vpsatech.com/news-information/pku-pioneer-break-the-dilemma-of-industrial-tail-g.html

——PSA-CO Separation Technology list in the National key energy-saving low-carbon technology promotion catalogue(2017)

In March 17th, 2017, National Development and Reform Commission published < National key energy-saving & low-carbon technology promotion catalogue (2017 Low-carbon Part)> in his official website. “Carbon monoxide rich gas secondary comprehensive utilization technology ”declared by PKU PIONEER has been listed in the catalogue, as the only carbon capture, utilization and storage technology this year.

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value of blast furnace gas

The Combustion Economy of Purifying CO from Blast Furnace Gas by Pressure Swing Adsorption

http://www.vpsatech.com/bef-co.html

Abstract: Owning to its low calorific value and combustion efficiency, a lot of blast furnace gas (BFG) is wasted in China. In this paper, pressure swing adsorption (PSA) technology was applied to purify BFG, which can improve the calorific value and combustion efficiency significantly. The technical feasibility, combustion efficiency and engineering economy analysis showed that BFG purified by PSA was the most effective way for energy saving and had a broad application prospect.

Key words: Blast Furnace Gas, Pressure swing adsorption, combustion economy.

1. Introduction

Blast Furnace Gas (BFG) is a byproduct of blast furnace ironmaking process, and its emission occupies the highest proportion in the by-product gas of the steel industry. It consists primarily of N2, CO, CO2, H2, CH4, etc., with the specific composition as shown in Table 1. Because the calorific value of blast furnace gas is generally only about 3,000-3,800 kJ/Nm3, it cannot meet the requirement of industrial furnace theoretical combustion temperature on the calorific value. Most of the steel plants have surplus in blast furnace gas; there are different degrees of emission phenomenon, resulting in environmental pollution and waste of energy.

In recent years, due to the national attention on the energy saving technology of iron and steel enterprises, enterprises' emission of blast furnace gas has decreased. Way of use of blast furnace gas is mainly burning, the main uses are:

1) direct use in hot blast stove;

2) direct use in complex thermal coke oven;

3) mixed use with high calorific value gas in heating furnace and soaking pit;

4) use of regenerative combustion technology in rolling mill furnace;

5) boiler generation of pure BFG;

6) combined cycle power plant (CCPP) of gas turbine and steam turbine with blast furnace gas as the main fuel.

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Peking University Pioneer Technology Co., Ltd.

http://www.vpsatech.com/

Beijing Peking University Pioneer Technology Co., Ltd. (here in after referred to as “PIONEER”) affiliated to Peking University, is mainly engaged in design and manufacture of PSA gas separation technology and equipment, also related adsorbent and catalyst. Pioneer can provide advanced and mature gas separation solutions for chemical industry, steel, non-ferrous metallurgical, glass fiber, paper making, electronic, refuse incineration and water treatment. Up to date, over 200 sets of medium/large-scale equipment have been built, with performance reaching the international advanced standard.