polysilicon/methyl alcohol tower manufacturing

The Poly crystalline silicon is the raw material of mono crystalline production, it is the electronic information base material of semiconductor devices such as contemporary artificial intelligence, automatic control, information processing, photoelectric conversion . It's called "the foot stone of microelectronics ".

In the solar energy utilization, mono crystalline silicon and poly crystalline also plays a tremendous role. Although from the fact that will make solar power has large market, and accept by vast consumers , we must improve the solar photoelectric conversion efficiency, reduce production cost. From the current international solar cell development process,it can see the development trends of mono crystalline silicon, poly silicon, ribbon silicon ,thin film materials (including micro crystalline silicon base film, compound base film and dye film).


Low-temperature methanol washing process use the cold methanol as solvent, and the excellent characteristics of  methanol absorbing acidic gas at low temperature , removing the acidic gas gas from raw material gas.
This process is with high degree of the gas purification and  good selectivity, the gas depressurization and decarbonlization can be procesed selectively in the same tower in subsection.

Low-temperature methanol washing process technology is mature and it has a good application performance in industry, it has been used extensively in synthetic ammonia, synthesis methanol and other hydrology synthesis, city gas, industrial hydrogen production and gas desulfurization etc gas purification devices. this technology is used in the large ammonia plant with coal and residue as raw material in domestic.

The following poly silicon/methyl alcohol tower devices are designed and manufactured by Wuhan XinFa Petrifaction Equipment Co., Ltd.

tower design graph

From left to right are Hydrogen absorbing tower, Hydrogen resolving  tower,circulating chlorosilane rectifying tower, methyl alcohol washing tower, methyl alcohol regenerating tower

Hydrogen absorbing tower

Hydrogen resolving  tower

methyl alcohol regenerating tower

Chlor-Alkali converter equipment

The converter is the key equipment in the in chlor-alkali production ,the converter is made by Wuhan XinFa Petrochemical Equipment Co., Ltd that has nice sealing effect as well as working life long.

With scientific processing technology, superb production technology and strict quality guarantee system, our company ensure every one of heat exchange tube and tube plate perfect union, flawless, durable. Adopt before welding welding parts with surrounding acetone cleaning, polishing and grinding collection scope face to metallic luster. Comprehensive automatic tube plate argon arc welding again from melting, twice wire filling welding and ultrahigh pressure pipe liquid bulging bag twice the tube expanding, shading and long time pressure-keeping tightness test, the entire many-side damping transportation measures, to ensure the high standard requirement of the converter for customers.

The following photos are the converters we designed and produced for our Chlor-Alkali plant customer.

converter design diagram

DN2800mm after converter

DN3000mm former converter

DN3200mm former converter

Converters we produced

Loading converters

Chlor-Alkali plant

The syntheticammonia pressure vessel manufacturing samples

During these years, the low sulphur low temperature shift device designed and retrofit by Wuhan XinFa Petrochemical Equipment Co., Ltd has been more than 300 sets, these devices has completed and put the total production ability has more than 3,000 tons ammonia/year. The device is under construction total capacity about 200 million tons ammonia/year. all of them have been put into operation called first success. the Scale from less than 2 million tons to 50 million tons, the pressure vessels has different grades from 0.60 Mpa to 2.0Mpa ,the typical shift device is for synthetic ammonia process, the combined methanol process, methanol unit process corresponding , even provide the hydrogen for the hydrogen peroxide factory . Earlier production device has been stable operation more than ten years, among them main heat ex-changer has been used already more than thirteen years.

There are some pressure vessel design draft by our company.

pressure vessel design draft

From the left to right side are saturating hot water tower, Main heat exchanger separator, interstage coolers, Soft water heater,shift conversion gas cooling separator.

The following are some syntheticammonia pressure vessel manufacturing samples for you as a reference.

0.24 million tons/year shift conversion F6

0.12 million tons/year shift conversion F2/F3

0.2 million tons/year shift conversion F4/F5

0.18 million tons/year shift conversion F5/F6

0.18 million tons/year shift conversion F6

0.16 million tons/year shift conversion F6/F7

The new process of pressure vessel

Wuhan Xinfa Petrifaction Equipment Co., Ltd is the only designated design and promotion unit of  Carbon monoxide low-temperature low-sulfur shift process invented by professor Chen Fushui(Patent No: ZL93 1 05606.3)  and the only manufacturer of high-efficient, low-friction heat-exchange equipment patent(Patent No: ZI2007 2 0088017.2) invented by professor Chen Fushui.

The commonly pressure vessel alternate design has some obvious disadvantages:  1) not paying enough attention to reduce resistance.  Production is still in progress for some devices even when the system resistance is up to 0.15 MPa; 2) lacking in system calculation, resulting in poor compatibility; 3) not paying enough attention to purification. In view of these questions,  based on the further research and calculation of  shift section, Mr Chen Fushui  carried out system optimization for  the process and equipment, inventing Carbon monoxide low-temperature low-sulfur shift process patent technology. Low-sulfur means meeting  the needs of preventing devulcanization without  increasing the concentration of hydrogen sulfide in semi-water gas on purpose. In general, the concentration of organic sulfur  in semi-water gas is more than 50 mg/NM3 and the concentration of  hydrogen sulfide  between 30-70 mg/NM3  after desulfuration. In total, the sulfur is between 80-20 mg/NM3. Low-temperature low-sulfur shift process meets these requirements. Low-temperature means  the low reaction session is responsible for the important part of shift reaction, meeting the requirements of low energy consumption in low temperature shift. Low-temperature low-sulfur shift process is comprised of ***  and ***. *** all uses Co-Mo antisulphuric low-temperature shift catalyst . ***uses both  the traditional iron-based high-temperature shift catalyst. Major features of *** are: retaining the advantage of energy-saving in low-temperature shift process , low expenses of shift catalyst, solving  the common problems of devulcanization and   severe erosion in low-temperature shift process. As for general ammonia plants, ***applies well. As for the methanol unit with high methanol-ammonia ratio(shift gas CO>6.0-8.0%), under the condition of guaranteed quality of gas and water, the lower the better.


 By the end of 2009, we have designed or reformed more than 180 low-temperature low-sulfur shift devices.  It developed from 10,000 tons of ammonia per year to 240,000 tons of ammonia per year for one single device. Total productive capacity is over 11,000,000 tons ammonia per year. Sinochem Plain Chemical Co., LTD.(Shandong Plain) successively built 7 sets of 80,000 tons, 100,000 tons, 120,000 tons,160,000 tons and 20,000-ton ***shift devices with work pressure 0.8/0 MPa after refoming the first four to six shift device.

Shandong Ruixing Chemical (Shandong Dongping) successively built one 120,000-ton shift device , two 240,000-ton shift devices with work pressure 0.80 MPa and the third 240,000-ton shift device is under way; Jiangsu Funing is building the one 200,000-ton shift device with 1.40 MPa work pressure after reforming the first 80,000-ton shit device; Luxi Chemical Group built two 180,000-ton shift devices at the same time in the new-built industrial park in 2007. We designed all the above devices and provided heat ex-changer.

240,000 ton per year shift device layout plan

The qualification of pressure vessel manufacturing

As a senior pressure vessel manufacturer, Wuhan Xinfa Petrifaction Equipment Co., Ltd has won the first tier supplier of PetroChina, Sinopec, China chemical group. In these years we won lots of honor from our clients as below.

Pressure Vessel Manufacturer Qualification

So far the engineering technical personnel in total are 51, 2 of which are professors of engineering, 10 of which are design engineers, 18 of which are middle-level personnel and 11 of which are full-time responsible staff. It has long-term project signing cooperation relationship with Tianjin University, East China University of Science and Technology, Tsinghua University, Beijing Chemical university for technical support, Tianchen Institute, Wuhuan Institute, Chengda Institute, and the alike scientific research institutes. 

You are welcome to send us quote via alexshawn1216@gmail.com. 

About the Pressure Vessel Manufacturer

Wuhan Xinfa Petrifaction Equipment Co., Ltd is located in the Sunshine Street of Miaoshan development zone of Jiang Xia, Wuhan. With convenient transportation, it covers an area of more than 80,000 m2, of which pressure vessel production workshop covers 18,000 m2 and towel internals and packing workshops cover 9,200 m2. It’s suitable for manufacturing and assembly of all kinds of large equipment and components. The company has large-scale cranes, vertical lathes, and annealing furnaces, which offers outward processing of special components. Equipped with special equipment of cutting, mowing, shearing, digging, curving, rolling, pressing, breaking, drilling, lathing, soldering, adjusting and so on, it is able to dependently produce pressure vessels and non-standard equipment of the industry of chemical engineering, oil refining, metallurgy, Biological pharmaceutics, pyrogenation, paper making, food and power, and towel internals, packing and structure parts etc.

The company has experienced designers of pressure vessels, packing and towel internals. So far the engineering technical personnel in total are 51, 2 of which are professors of engineering, 10 of which are design engineers, 18 of which are middle-level personnel and 11 of which are full-time responsible staff. It has long-term project signing cooperation relationship with Tianjin University, East China University of Science and Technology, Tsinghua University, Beijing Chemical university for technical support, Tianchen Institute, Wuhuan Institute, Chengda Institute, and the alike scientific research institutes. It succeeded in offering the overall design scheme, the manufacturing and installation of atmospheric-vacuum distillation and catalytic cracking, delayed coking, hydro desulphurisation, rectifying units to PetroChina Urumqi Petrochemical Company, Lanzhou Petrochemical Company, PetroChina Changling Company, Sichuan Petrochemical Company, CNOOC Huizhou Petroleum branch and the alike. Moreover, the company has Carbon monoxide low-temperature low-sulfur transformation process invented by professor Chen Fushui(Patent No: ZL93 1 05606.3), which are combined with high-efficient, low-friction heat-exchange equipment patent(Patent No: ZI2007 2 0088017.2). More than 100 fertilizer, methanol, Hydrogen Peroxide manufacturer use the proprietary technology developed by our company, achieving very good results and spoke highly of by users. So far, our company has developed from the design of small-scale Synthetic nitrogen transformer in the past to the design of 240,000 ton nitrogen per year transformer(actual productivity is 300,000 tons per year).

Our products include Heat Exchanger, Storage Tank, Reactor, Tower, Tower Internals, Pall Ring, Intalox, Double Saddle Ring, IMTP, Orifice Corrugated Packing, Wire Mesh Corrugated Packing, Sparger, Collector, etc are available all year long. We can provide super-short term emergency production for maintenance users. We provide manufacturing, annealing and transportation business for workpieces below 5 meters and provide field manufacturing and installation business for workpieces above 5 meters.