CN1916133A

CN1916133A - Vanadium suppress agent in use for heavy oil type gas turbine, and preparation method

Info

Publication number: CN1916133A
Application number: CN 200610035559
Authority: CN
Inventors: 赵志明; 左钟
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-18
Filing date: 2006-05-18
Publication date: 2007-02-21
Anticipated expiration: 2026-05-18
Also published as: CN100457874C

Abstract

This invention relates to a vanadium inhibitor for gas turbines using heavy oil. The vanadium inhibitor is composed of hydrocarbon solvent, magnesium compound, and surface modifier and dispersant for aiding combustion. Compared with present vanadium inhibitors, the vanadium inhibitor in this invention has such advantages as high magnesium content (not lower than 20%), stable quality, no crystal precipitation and no blockage to gas channels.

Description

A kind of vanadium suppress agent in use for heavy oil type gas turbine and preparation method thereof

Technical field:

The present invention relates to a kind of fuel oil additive.

Background technology:

Heavy oil type gas turbine obtains common application in China's power industry generating, owing to more or less contain poisonous metal element K in its fuel heavy oil, Na, V etc., the low melting component that these element burning backs produce can cause fused salt corrosion to the combustion machine, K, Na can remove by washing oil fuel process, can't wash and remove and be present in V in the fuel oil with the porphyrin compound form, can only add additive burns with fuel oil, change the chemical constitution and the physical aspect of its combustion products, form dystectic solid ash and stop and generate the corrosion that low melting point V compound brings and take place.Vanadium-inhibition agent of the present invention can generate dystectic vanadate compounds and play the vanadium rot-resistant effect that presses down after oil fuel participates in burning.

The magnesium compound that existing vanadium-inhibition agent adopts has magnesium acetate, magnesiumcarbonate, magnesium basic carbonate, sal epsom, magnesium chloride etc., after these magnesium compounds are made the vanadium-inhibition agent product of certain flowability, oil soluble or oil-dispersing property by certain surface treatment or dissolving, the content of magnesium elements in system generally is no more than 10%, the system instability that has, the easy crystallization that has is clear to go out to stop up path, the interpolation cost height that has, the use of the fuel oil that is unsuitable for the existing high V content of interpolation equipment that has.

Summary of the invention:

Goal of the invention of the present invention is to provide a kind of Mg content to be equal to or greater than vanadium suppress agent in use for heavy oil type gas turbine of 20% and preparation method thereof.

Vanadium suppress agent in use for heavy oil type gas turbine of the present invention is mainly by varsol, magnesium compound, surface-modifying agent, combustion-supporting dispersion agent constitutes, varsol is common kerosene, the petroleum cuts of diesel oil and other similar performance, magnesium compound is a magnesium hydroxide, wherein a kind of or the two mixture of magnesium oxide, surface-modifying agent is to have-COOH, in the oil soluble macromole of specific function machines such as-NCO group, high polymethyl siloxane, combustion-supporting dispersion agent is a polyethers, polystyrene one embedding one polymethyl acrylic acid, polyhutadiene one connects a polymethyl acrylic acid, anhydrous sorbitol fatty esters etc. are two or more mixture wherein, the varsol weight content accounts for 30-60 part, the magnesium compound weight content accounts for 50-80 part, the surface-modifying agent weight content accounts for 0.5-2.5 part, and combustion-supporting dispersion agent weight content accounts for 0.2-1.0 part.Surface-modifying agent can combine with oxygen magnesium oxide, fine magnesium oxide micro-powder particle surface, thereby with inorganic magnesium hydroxide and even and stable being dispersed in the solvent system of magnesium oxide.This surface-modifying agent is the middle and high polymethyl siloxane of oil soluble macromole, belong to Lewis acid, contain-COOH-NCO isoreactivity group in its molecule, in these groups and the above-mentioned magnesium compound-OH group generation physical chemistry combines, thus play the effect of coupling modification.Combustion-supporting dispersion agent is rich oxygen containing polymeric surface active agent, and it can eliminate the influence of micro-moisture to system stability, and has the effect of coupling dispersive concurrently.By the acting in conjunction of above-mentioned various ingredients, can promote the content (greater than 20%) of magnesium in the additive significantly, and also the additive stable performance, do not have xln and separate out, can not stop up fuel channel.

Vanadium suppress agent in use for heavy oil type gas turbine preparation method of the present invention realizes like this, magnesium compound is washed, dries, pulverized, sizing screen is selected the micro mist of particle fineness less than 2 μ, this micro mist adding of aequum is had in the reactor of heating unit, stir and be warming up to 80～90 ℃, stir well insulation 1～4 hour behind the adding surface-modifying agent, stir well after adding varsol, add combustion-supporting dispersion agent again, temperature was controlled at 50～60 ℃ of stir abouts 1 hour, and filtration, check, packing get product.

Compared with the prior art the present invention has in the additive that Mg content is equal to or greater than 20%, the additive stable performance, does not have xln and separates out, and can not stop up the advantage of fuel channel.

Embodiment:

Now in conjunction with the embodiments the present invention is described in further detail:

Vanadium suppress agent in use for heavy oil type gas turbine of the present invention is mainly by varsol, magnesium compound, surface-modifying agent, combustion-supporting dispersion agent constitutes, varsol is common kerosene, the petroleum cuts of diesel oil and other similar performance, magnesium compound is a magnesium hydroxide, wherein a kind of or the two mixture of magnesium oxide, when adopting mixture, magnesium hydroxide, the magnesium oxide proportioning is 1: 5-5: 1, surface-modifying agent is to have-COOH, in the oil soluble macromole of specific function machines such as-NCO group, high polymethyl siloxane, combustion-supporting dispersion agent is a polyethers, polystyrene one embedding one polymethyl acrylic acid, polyhutadiene one connects a polymethyl acrylic acid, anhydrous sorbitol fatty esters etc. are two or more mixture wherein, and the varsol weight content accounts for 30-60 part, is preferably 40-50 part, the magnesium compound weight content accounts for 50-80 part, be preferably 60 parts, the surface-modifying agent weight content accounts for 0.5-2.5 part, and combustion-supporting dispersion agent weight content accounts for 0.2-1.0 part.

Vanadium suppress agent in use for heavy oil type gas turbine preparation method of the present invention realizes like this, magnesium compound is washed, dries, pulverized, sizing screen is selected the micro mist of particle fineness less than 2 μ, this micro mist adding of aequum is had in the reactor of heating unit, stirring is warming up to 80～90 ℃, stir well insulation 1～4 hour after adding surface-modifying agent, stir well after adding varsol, add combustion-supporting dispersion agent again, temperature was controlled at 50～60 ℃ of stir abouts 1 hour, and filtration, check, packing get product.

The physical and chemical index of products obtained therefrom is as follows:

Outward appearance: grey black thickness oily liquids

Mg％(wt)：≥20％

Viscosity (40 ℃ of cst) :≤200

Density (20 ° of g/ml): 1.20～1.35

Mg/Ca(g/g)：≥150

Mg/(Na+K)(g/g)：≥1500

Mg/Pb(g/g)：≥2000

Mg/V(g/g)：≥5000

Products obtained therefrom effective ingredient magnesium element content height, the system good stability, metals content impurity is low, and the black dirt of formation is loose after heavy oil burns, and very easily washing is removed, and fires the machine favorable anti-corrosion effect, and power decline is slowly, and washing is exerted oneself and is recovered height.

Claims

1, a kind of vanadium suppress agent in use for heavy oil type gas turbine, it is characterized in that by varsol, magnesium compound, surface-modifying agent, combustion-supporting dispersion agent constitutes, varsol is common kerosene, the petroleum cuts of diesel oil and other similar performance, magnesium compound is a magnesium hydroxide, wherein a kind of or the two mixture of magnesium oxide, surface-modifying agent is to have-COOH, in the oil soluble macromole of specific function machines such as-NCO group, high polymethyl siloxane, combustion-supporting dispersion agent is a polyethers, polystyrene one embedding one polymethyl acrylic acid, polyhutadiene one connects a polymethyl acrylic acid, anhydrous sorbitol fatty esters etc. are two or more mixture wherein, the varsol weight content accounts for 30-60 part, the magnesium compound weight content accounts for 50-80 part, and the surface-modifying agent weight content accounts for 0.5-2.5 part, and combustion-supporting dispersion agent weight content accounts for 0.2-1.0 part.

2, vanadium suppress agent in use for heavy oil type gas turbine according to claim 1 is characterized in that magnesium compound is a magnesium hydroxide, the magnesium oxide mixture, and magnesium hydroxide, the magnesium oxide proportioning is 1: 5-5: 1.

3, vanadium suppress agent in use for heavy oil type gas turbine according to claim 1 and 2 is characterized in that the varsol weight content accounts for 40-50 part, and the magnesium compound weight content accounts for 60 parts.

4, a kind of vanadium suppress agent in use for heavy oil type gas turbine preparation method, it is characterized in that magnesium compound is washed, dries, pulverized, sizing screen is selected the micro mist of particle fineness less than 2 μ, this micro mist adding of aequum is had in the reactor of heating unit, stir and be warming up to 80～90 ℃, stir well insulation 1～4 hour behind the adding surface-modifying agent, stir well after adding varsol, add combustion-supporting dispersion agent again, temperature was controlled at 50～60 ℃ of stir abouts 1 hour, and filtration, check, packing get product.