In order to ensure the safe production of coal mines, it is necessary to supply a large amount of fresh air to the underground coal mine to dilute the concentration of biogas and eliminate harmful gases. This depends on ventilation. Almost all coal mine exhaust gas is directly discharged into the atmosphere, which not only causes environmental pollution, but also wastes a large amount of available gas resources. The US Environmental Protection Agency estimates that in 2002, for example, the global coal mine ventilation gas emissions were more than 17.3 billion cubic meters, equivalent to 237 million tons of carbon dioxide emissions into the atmosphere. Among them, 11 major coal-producing countries accounted for more than 88%: China ranked first with 6.7 billion cubic meters, followed by 2.6 billion cubic meters in the United States, 2.2 billion cubic meters in Ukraine, and 700 million cubic meters in Russia and Australia. Poland and Kazakhstan reached 400 million cubic meters and 300 million cubic meters respectively.

There are many technologies available for oxidizing coal mine exhaust gas. The US Environmental Protection Agency is evaluating the optimal airflow, biogas concentration, and effective market use.

The most promising is the wind reverse reactor technology. This technique utilizes the principle of regenerative heat exchange between the hard bed of gas and heat exchanger media. The exhaust gas flows in one direction, passes through the reactor, and the temperature rises until the gas is oxidized. When the oxidized gas heat product continues to flow toward the far side of the hard bed, it loses heat until the wind flow automatically reverses, eventually emitting air, carbon dioxide, water and heat. Heat can be supplied to the local area, or a gas turbine can generate electricity. Based on experimental and field experience, the airflow reverse reactor can be operated with a venting gas concentration as low as 0.1%. In the United States, this mature technology is about to be put into commercial use.

Mine exhaust gas can also be used directly as fuel gas for power generation. Commercial applications have proven to be technically feasible and the process is simple, although it is limited in reducing the amount of greenhouse gases. Australia's Anping Coal Mine uses 10% of the exhaust gas for many internal combustion engines. Exhaust gas (concentration: 0.7%) does not require processing, and can be directly used to generate electricity from internal combustion engines and generator units that use coal mine gas and old pond gas (plus natural gas if necessary) as the main fuel.

Some companies have become or are developing gas turbines that use exhaust gas as their main fuel. Some technologies use a catalyst to burn exhaust gas. Some techniques use gas on an external burner without a catalyst, but the effect is lower than the standard turbine temperature, so there is still a problem of insufficient combustion. .

At present, some developers say they can use mine exhaust gas with a gas concentration of 1% to 1.6%, or a mixture of mine exhaust gas and high concentration gas. There are also developers working on the use of exhaust gas with a gas concentration of 0.8% or less. If the gas concentration is high, the turbine can use up to 80% of the total fuel, and at low concentrations, only 20% of the total fuel can be used.

Another technology that has been developed to demonstrate the use of exhaust gas is the combination of coal gangue and exhaust gas in the converter, and the heat obtained can meet the needs of 1.2 megawatts of turbine power. Depending on the proportion of coal gangue exhaust gas, the equipment can be used as an auxiliary technology or main technology to utilize exhaust gas. It does not need to replenish gas or increase the concentration of exhaust gas to maintain operation.

The concentrator is another new technology that economically uses exhaust gas. A concentrator can increase the concentration of exhaust gas by 20 times. This may be advantageous for blending with low concentration exhaust gas for lower fuel turbines, or for increasing the concentration to undiluted gas. The key is how to improve the efficiency of increasing the concentration of exhaust gas. At present, although the experiment to increase the efficiency of increasing the exhaust gas concentration by 0.1% to 1.0% has made some progress, it is not satisfactory.

There are also a number of ways to use the exhaust gas to produce protein and supplement animal feed.

The use of exhaust gas to generate electricity, or the use of exhaust gas to reduce greenhouse gas emissions, can not only greatly improve the environment, turn waste into treasure, but also obtain considerable economic benefits, the economic significance and practical significance of exhaust gas utilization technology is Unquestionable.

Anti-Slip Paper

1.Material:This type of paper is made out of 100% natural virgin wood pulp or recycled paper,which has no pungent odor. The raw materials which are selected carefully and imported from USA will be dealt with special process.The imported original wood pulp with 450 ° c high temperature sterilization is not easy to break and tear up.All the paper we used to manufacture the paper bag is not only super durable and reinforcement but also ECO friendly ,biodegradable,compostable environmental-friendly,natural friendly and PLA recyclable Owing to this good quality materials.We have very high standards on controlling raw materials.So that the quatity of our paper is higher than those at the market. Reuse the paper as many times as you like and recycle them when you are done for a greener Earth! We offer a wide variety of material and color option to meet your requirements.

2.Size:Multi customized sizes are available,we accept personalized sizes.Different sizes including small,medium and large measurement which are suitable for different usages.It`s versatile.we category for kinds of industrial usage.

3.Printing:We have the best advanced technology fully automatic printing machines which can support up to 8 colours printing.We accept customer designs and logos.Gravure printing,embossing printing,debossing printing,hot stamping,screen printing,UV printing,offset printing,flexo printing with CMYK pantone non-toxic water based ink are all available. Our printing has a pretty good quality as the printing of the designs is not only more durable,sun proof,weather proof but also beautiful and bright,which absorbs ink well and is stable not easy to tide the color.We aslo supply plainpaper bag, which are perfect for craft and DIY. Printed and embellished as you may wish. Personalize the bags to make them uniquely yours. Print your own business logo and use them as retail carry bags.

4.Surface handling:we supply glossy and matte surface dealing.This all depends on customer`s requirements.Whatever the glossy or matte surface makes the paper more luxurous.

5.Appication: anti-slip,anti-skid paper,tray paper,sheet and placemat is widely used in airline,train,ship and resturants.Burger wrapping paper are perfect for packing bread, hamburgers,hot dogs,fast food,sausage, cookie,etc. They are great suitable for any occations and affordable for small to medium businesses, parties & events, wedding reception and start-up business.

6.Quatity inspection systerm : One of the reasons for our good Quality is that inspection system is best of its kind. We're proud of our quality control system. Our standards are very high. we put great stress on quality of products.Almost every process is computerized.. All products have to pass strict inspection before they go out. I believe the quality is soul of an enterprise. So we won't sacrifice the quality for quick profit.All of our products are suitable for the world market. Our products has always come up to international standards. We have trained analysts to do quality analysis of each process when we make the product.We also provide quality analysis training as part of training for new workers plus a week of futher training every year. So our products are well known for their fine quality. All the paper bag are received a warm welcome in the world market wherever they go.Our clients are all satisfied with them.

7.Sample:We offer free samples between three and five days, but excluding complicate condition upon customer`s requirnments.For instance, we charge you like 50 dollars for samples,but we will refund you after placing an order.The expenses of samples delivery can be nagotiated.

8.Our factory: Jinan Xin Shun Yuan Packing Co., Ltd is located in Ningjiabu Industrial Park,Zhangqiu district, Jinan city, Shandong province, China.It originated in Shandong Printing Factory (founded in 1994).It is professional manufacture of new environmental-friendly packing bag based printing processing enterprise with more than 12 years of experience in production and management.Recent years, our scale is expanding. Covering an area of about 2 million square meters. And also expand our equipment, like unit type flexo printing machines, satellite adagio printing machines, lamination type flexo printing machines, gravureprinting , dry laminating machines, automatic square bottom paper bag machines, food paper bag machines, automatic control stick bag machines, trilateral, edges the closure, self-reliance paper bag machines, CNC cutting machines.We have 8 sets flexo printing machines, 1 set Gravure printing machine;12 sets Paper bag machines ; 5 sets cutting machines, tin tie machines;30 sets heat sealing machines ; 3 sets glue coating machines , etc. We have150 staff menbers,18 management staff ,12 salesmen and 120 workers. We have ISO9001, FSC certificates.

9.Packing & Shipment:Standard export packing, 250PCS or 500PCS each carton. We try our best to make sure the packing is seaworth and strong enough to stand the rough handling in a long distance shipment .In order to ensure the packing is moisture resistance,water proof,weather proof etc.The packing corrugated cartons therefore are lined with plastic bag from inside and strengthened double solid plastic straps.We have rich experience on packing.We normally do not only provide air transportment and sea transportment but also multi modal combined transportments,which is up to customer`s requirements.

10.Payment methord: L/C,D/A,D/P,T/T,Western Union,MoneyGram Paypal payments.

11.Our service:we are in 24/7 service,we are responsibilable for replacing the defect products.Feel free to talk to us.

Anti Slip Paper,Anti Skid Paper,Anti Slip Pallet Paper,Anti Slip Kraft Paper

JINAN XINSHUNYUAN PACKING CO., LTD , https://www.xsy-packaging.com