Annotation

Based on usage of compact and, if it's require, yielding blocks increasing methanol producing sets by technique of direct oxidation with highest purity (85-95%), its offered to provide works, which let use West-Polar deposit as methanol production base for Polar GCD operating. Approach requires minimum of investment that quickly recouping. It is based on Canadian research works and advance experiments providing by DAST department of OAO "Sibneftgaz". Performance deadline 9-10 month, financing - 39-42,5 mln$.

Patenting of research results let would not buy Canadian patent and lead licensed work with stand aside enterprises and/or operate mini sets on the other deposit-satellite.

"Small" natural gas deposit (deposit-satellite) on the north of Tumen region is small profitable when their operating by traditional for branch way, i.e. at natural gas extraction and its long transporting as fuel power product. This situation provides unpromising development and operating such a deposits in spite of relatively lager total stocks of hydrocarbon raw.

On the other side, "lager" deposit consumes big quantity of hydrating inhibitor - methanol, which is product of natural gas treatment and deposit-satellite is situated nearby lager deposit. However the technology of existing industrial sets of methanol production require lager-scale produce (minimum of 300 th.t/year and this sets don't profitable without such produce especially at their building in Far North. Such amount of methanol need not on the giant-deposit as Urengoy GCD. North of Tumen region total maximum requiring rating in methanol is 150 thousand form per year.

In this case, if such set was built (in spite of lager investment and unprofitableness), there are any problems in methanol transporting to the specific deposit cause that require creating and supporting power transport network with center in the methanol producing dislocation place in Far North condition.

The result of this is following situation: natural gas is transported to the Russia central regions, where it has been treated on the lager-scale sets with methanol production, which in its turn is transported back to deposit of natural gas by different transporting plans existing this time.

Solution of that problems ought to be powerless (5-10 t/day) and compact sets for inhibitor producing which are installed on the deposit-satellite, using of "good" prospecting gassers with corresponding tier. Such yielding sets, capable of inhibitor providing from 2 to 10 GCPS of senoman deposit with extraction about 30 mln.m3/day each one. Ideal range for offering scheme is tandem Polar + West-Polar deposits.

There is technology that let producing methanol on the compact sets, it is direct methanol oxidation method.

This method does not apply today, because of two reasons:
1. Neither more than 5% of using methanol is treated by one reactor pass and after that cooling of methanol mixture, dividing of methanol and resiculation of 45% are required.
2. The result of modern usage of construction and reactor materials and bad mixing of sources gas is not methanol, it is so-called "methanol product containing only 40% of methanol, other are water aldehyde and acids, which is worse.

However, there is developments (Canadian patent ¹4618732, October 21, 1986) providing possible producing methanol product with containing 85-95% pure methanol and water the rest, by reaction of direct methanol oxidation.

By author information this result is provided in connection with inert material for reactor walls (glass) using inert and very care mixing of initial gas, and providing specific reaction temperature conditions and reagent flow rate through reaction zone.

It is possible to avoid frequent circulation of initial raw in reactor at the methanol producing on the deposit using five-seven stage scheme from one-type blocks reactor-divider and layer gas pressure. Cooling of methanol mixture can provide in ABO small yield type of apparatuses and dividing of condensating methanol on the metal-ceramic multi-layer filters with effectiveness to 99,999% by drops with dimensions more than 0,1 mcm., that provide dividing of methanol and methane-methanol mixture before its supply to the next reactor stage.

Some examines of this process provided by DAST department of OAO "Sibneftgaz" in 1999, in spite of research financing absents. Obtained advance rates and capability of dividing methane-methanol mixture by offering way.

For producing of 10t/day methanol is required to install producing of oxygen (such compact sets are produced by domestic and foreign industry), plus 5t/day, i.e. at natural gas density 700 kg/1000 m3 - 7,14 th.m³/day. Precisely, it is required more including incomplete treatment of oxygen and natural gas, but it is not important for real rating. Obviously, it would not be falling down of layer pressure during operating at such debit and that is extremely important cause of requiring pressure for methanol synthesis is about 70-90 atm.

Rough cost rating of such methanol producing set is approximately 1 mln$ and year profit - 10 t/day*330day/year*300$/t=990000$. Thus, it is possible to relay on approximately one-year recoupment of such set.

Stages of Research and financing, performance deadline:

For substantiated rating of technical realization and economic efficiency it is necessary to provide following works:
1. Provide examine of results rendering in patent ¹4618732, October 21, 1986, namely:
1.1 Produce system of precision mix of gas-reagents (possible patent capability);
1.2 Produce inert reactor of methanol synthesis with heating system (possible patent capability), pressure control and reagent flow rate control.
1.3 Produce reactor following and management system. Deadline 2,5-3 month. Cost 18000-19000$.
1.4. Provide series of experiments at pressure 70, 75, 80, 85, 90 atm.
1.5. Provide series of experiments at oxygen concentration 2%, 2,5%, 3%, 3,5%, 4%, 4,5%, 5%, 6%.
1.6 Provide series of experiments with various gas flow rate in reactor. Deadline 1,5-2 month from reactor producing finish. Cost 9000-9500$.
1.7 Provide precision heat-exchange-divider gas-drop mixture of gas reagents (possible patent capability). Deadline 1,5-2 month (producing simultaneously with reactor). Cost 5000-5500$.
1.8. Provide optimization of stages of precision dividing. Deadline 1,5-2 month (producing simultaneously with reactor experiments). Cost 4000-4500$.
1.9. Provide patent search in researching theme, form and submit application for RF patent. Deadline 1-1,5 month. Cost 2000-2500$.
1.10. Develop Technical Task to producing set sample (test-industrial set) at methanol producing by direct oxidation method with yield 5-10 t/day. Deadline 1month. Cost 1000-1500$.

Performance of total work deadline 9-10 month, from financing beginning.

Kind of payment: 50 % advance payment, 25% after finishing of first part of works, 25 % after reports delivery.

Total cost - 39-42,5 thousand $.

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