CN100351430C - A non-corrosive treatment to enhance pressurized and non-pressurized pulverized coal combustion - Google Patents

A non-corrosive treatment to enhance pressurized and non-pressurized pulverized coal combustion Download PDF

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Publication number
CN100351430C
CN100351430C CNB2004800079997A CN200480007999A CN100351430C CN 100351430 C CN100351430 C CN 100351430C CN B2004800079997 A CNB2004800079997 A CN B2004800079997A CN 200480007999 A CN200480007999 A CN 200480007999A CN 100351430 C CN100351430 C CN 100351430C
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aqueous solution
copper
thing
amount
coal
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CN1764741A (en
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尼古拉斯·R·布兰福德
利巴尔多·A·佩雷斯
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General Electric Co
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General Electric Co
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/34—Other details of the shaped fuels, e.g. briquettes
    • C10L5/36—Shape
    • C10L5/366—Powders
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L9/00—Treating solid fuels to improve their combustion
    • C10L9/10—Treating solid fuels to improve their combustion by using additives
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/001—Injecting additional fuel or reducing agents
    • C21B5/003—Injection of pulverulent coal
    • C21B5/004—Injection of slurries
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/02—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in air or gases by adding vapour phase inhibitors

Abstract

Methods and compositions for inhibiting corrosion of metal surfaces in a furnace system are disclosed. In one aspect of the invention, pulverized coal is burned as fuel in the presence of a copper ion catalyst/combustion aid. Corrosion is inhibited in these systems by the use of a blend of primary aminoalcohol such as 2-aminoethanol, tertiary aminoalcohol such as triethanol amine, and boric acid or water soluble salt form of the acid.

Description

Improving the non-aggressive of pressurization and uninflated coal dust burning processes
Technical field
The present invention relates to the method and composition be used to the metal surface corrosion that prevents contact furnace.
Background technology
Using copper and other metal to strengthen the stove operation is widely known by the people. For example, according to United States Patent (USP) 6,077, the instruction of 325 (people such as Morgan), can will comprise the metallic compound of Zr, Cr, Mo, W, Mn, Fe, Co, Ni, Cu, Zn, Al, Sn and Pb add in the coal dust, this coal dust acts as a fuel and burns in blast furnace (blast furnace) etc. Comprise in blast furnace in the preparation of the iron of using the carbon reducing iron oxides, coal dust is through being commonly used to replace part of coke. It is said that this replacement causes less pollution because coke is substituted by part, and because coal is more cheap than coke, the method can realize saving.
In typical blast furnace process, what comprise iron ore, sintering thing (sinter), waste material or other source of iron contains the same fuel of iron material (being generally coke), with flux (flux), lime stone or dolomite from blast furnace is packed at the top into. Blast furnace combustion parts fuel generate to be used for the heat of smelting iron ore, utilizes the balance of fuel to reduce the combination of iron and iron and carbon. Shove charge amount (charge) in typical stove is produced every ton of pig iron, is approximately 1.7 tons of iron ores or other contains iron material, 0.5～0.65 ton of coke or other fuel, and about 0.25 ton of lime stone and/or dolomite. In addition, also in stove, be blown into 1.8～2.0 tons of air during the course.
In the practice, will contain the top of iron material (sintering thing, iron ore, bead etc.), fuel (coke) and flux (lime stone, the dolomite etc.) stove of packing into. Hot-air (air blast) is blown into blast furnace by the opening (being called the air port) at furnace bottom. Air port arm (tuvere stock) is equipped with the injection rifle, injects rifle by this and injects the fuel (gas, oil and coal dust) that replenishes. The air burning fuel that blasts also impels chemical melting to generate iron. Before stove (such as coke oven, the boiler etc.) burning that is used for preheating air blast or other purposes, will purify from the burning gas of blast furnace, remove particle and other harmful gas.
As mentioned above, when coal dust replaced part of coke, metal (those that for example disclose in ' 325 patents) can be used as combustion catalysis agent or auxiliary agent. Because they are provided at the ability of the coal that utilizes lower grade in the stove and allow more multifocal charcoal to be replaced by coal dust, and are therefore highly beneficial. In addition, they help to make " coal cloud (coal cloud) " minimized and reduction LOI. The slag content that reduces, the particle of minimizing disperse and more high-quality iron also is to give the credit to the potential benefit of using these catalyst or auxiliary agent.
Copper class catalyst or burning auxiliary agent have become general especially. Yet subsidiary etching problem has appearred in the result. Problem is caused by corrosion, namely adopts and generates the burning product on the surface of low-carbon steel that exists in the furnace system of combustion catalysis agent/auxiliary agent. (as used herein, " stove " and " furnace system " refers to baking oven, boiler, blast furnace, or the chamber, any chamber (enclosure) of the fuel that wherein burns. )
Because the metal parts of furnace system and this corrosion of assembly, stove equipment itself can be ineffective, causes shut-down time and the expensive replacement of process.
Summary of the invention
We have developed a technology and have prevented the corrosion of furnace system and combustion catalysis agent/auxiliary agent that the metal class is used in permission, and particularly those adopt copper as the combustion catalysis agent/auxiliary agent of active component. In one aspect of the invention, preservative treatment thing of the present invention (corrosion inhibiting treatment) and copper combustion catalysis agent/auxiliary agent are mixed, form the protectiveness film at the surface of low-carbon steel that contacts with burning product in the stove.
Described preservative treatment thing comprises the blend thing of primary amino alcohols (namely have primary amino radical official can) and boric acid or water-soluble salt that should acid. In the blend thing, also can there be uncle's amino alcohol (namely having uncle's amino-functional). Before coal is injected stove, preferably the form of this blend thing with the aqueous solution is sprayed on the coal dust. " cold " end that perhaps, any place that handled thing is applied in furnace system with the form of spraying can be comprised so-called " sole (fire side) " or stove. (referring to United States Patent (USP) 4,458,006 and 4,224,180, be hereby incorporated by)
Concrete enforcement mode
According to the present invention, the metal surface, for example the surface of low-carbon steel of furnace system is effectively processed with the preservative treatment thing, and this preservative treatment thing comprises the blend thing of primary amino alcohols and boric acid or its water-soluble salt. Perhaps, described preservative treatment thing can comprise uncle's amino alcohol. Preferred primary amino alcohols is the 2-ethylaminoethanol, and uncle's amino alcohol is triethanolamine. It is successful that the present invention has been proved to be, and the furnace system for the coal dust that wherein burning acts as a fuel in the presence of copper catalyst/burning auxiliary agent is successfully especially.
Most preferably the form with the aqueous solution provides this preservative treatment thing. Term used herein " aqueous solution " means not only to comprise real chemicals solution, and comprises dispersion liquid, mixture and suspension. Solution can be sprayed directly on the coal dust with the amount of every ton of about 100ml～1L of coal. More preferably for every ton of coal dust, this amount is 300ml～1L.
Preferred preservative treatment thing comprise 2-ethylaminoethanol and triethanolamine the two. In addition, can be with the anticorrisive agent of routine water-soluble gluconic acid salt for example, preferred gluconic acid sodium adds in the preservative treatment thing. When wanting in the presence of as the copper of catalyst/burning auxiliary agent, to burn coal dust, also the copper ion source can be added in the aqueous solution that want to be sprayed on the coal.
The invention still further relates to preservative treatment thing composition, said composition is fit to use or be sprayed on the fuel with the form of the aqueous solution. In these compositions, the component 2-ethylaminoethanol in the aqueous solution, triethanolamine, and the amount of boric acid or its salt is approximately 1～10wt%. The amount of the gluconic acid sodium that can also exist in the aqueous solution is approximately 1～15wt%. Also exist in the aqueous solution in the situation in copper ion source, the amount in copper ion source can be so that the Cu that provides2+Amount be 1～20wt%.
In the presence of copper, the synergy blend thing of 2-ethylaminoethanol, triethanolamine and borate is water-fast. But, when this blend thing when known mild steel anticorrisive agent gluconic acid sodium mixes, gluconic acid salt/" blend thing " though mixture in the presence of copper, in water, also have high dissolving property.
Exemplary composition according to the present invention comprises:
Amino alcohol components and boric acid or its salt 1～10wt%
Gluconic acid sodium 1～15wt%
Copper is (as Cu2+) *           0～20wt％
The amount of water remainder
More preferably, said composition comprises:
2-ethylaminoethanol and triethanolamine and boric acid or its salt
Amino alcohol blend thing 1～10wt%
Gluconic acid sodium 1～15wt%
Copper is (as Cu2+) *           1～20wt％
*Be adapted at providing in the aqueous solution must the amount Cu2+The copper compound of ion
Based on preliminary result, copper ion source, gluconic acid sodium, 2-ethylaminoethanol, triethanolamine preferably are provided in the single aqueous solution, and its water-soluble salt of boric acid, be used for being sprayed at coal dust. Exemplary copper ion source is five hydrated copper sulfates and maltonic acid copper II.
The at present preferred product that is used for industrial use comprises effective material (actives) of about 3% 2-ethylaminoethanol, triethanolamine and boric acid blend thing, also have effective material of 4% gluconic acid sodium and effective material of 19% five hydrated copper sulfates, and the water of capacity is so that the total weight of ingredients equals 100%.
Embodiment
Further describe with the following Examples the present invention, these embodiment should regard as explanation of the present invention, limit the present invention and should not be construed as.
Embodiment 1
Corrosion rate is the bottle examination method of (Corrosion Rate Comparison) relatively
The experiment step
All corrosion tests adopt bottle examination method to carry out with low-Carbon steel specimen (coupon). Before and after contact preparation solution, clean sample with phosphoric acid trisodium and float stone. Use isopropyl alcohol flushing sample after cleaning. Each low-Carbon steel specimen was immersed in the copper solution (being formed by above-mentioned reserve liquid preparation) of 1% (weight) 24 hours. (only have two exceptions be in the following data table latter two, comprise low-Carbon steel specimen immersed in the undiluted reserve liquid) weight of total test solution is 100 grams. Each test is carried out under 30 ℃ in the water-bath with the 40rpm vibration. Determine corrosion rate by the weight loss amount that shows after 24 hours. The ingredients of all tests is carried out twice test, and the corrosion rate shown in therefore is twice mean value. Keep copper (such as the Cu in EP 9587 for every kind of new ingredients for subsequent use for preparing2+(4.84%)) content is constant. The percentage in surfactant, water and copper ion source is controlled variable. % by weight based on every kind of component prepares all blend things. In addition, with using 11 days test of undiluted reserve liquid than the superior in two kinds of corrosion blend things.
Experimental result
(its content in every kind of reserve liquid of following test is 4.84%Cu to copper class burning promoter (CBCE)=19% 5 hydrated copper sulfate2+)/1.6% alkyl polysaccharide glycosides (alkylpolyglucoside) surfactant (Triton BG-10).
Anticorrisive agent blend thing (CIB)=2-ethylaminoethanol, triethanolamine and boric acid (Maxhib AB-400), available from Chemax, Rutgers Organic Corporation, Greenville, SC 29606.
Following data table 1 has shown the above-mentioned CBCE with suitable used concentration and the CIB that lists.
Table 1
Embodiment The composition (wt%) of the reserve liquid of test Corrosion rate on mild steel (mpy) The decline % (with respect to CBCE) of corrosion rate
Contrast CBCE (4.84%Cu) [contrast]  935   NA
  C-1 Similar with CBCE, but 4.84% Cu is from maltonic acid copper (II) rather than CuSO4.5H 2O  25   97
  C-2 The CBCE that contains 1% gluconic acid sodium of adding  959   0
  C-3 Add 6.7% gluconic acid sodium  974   0
  CBCE
  C-4 The CBCE that adds 9% gluconic acid sodium   1000   0
  C-5 Similar with CBCE, but 1% Cu is from maltonic acid copper (II), and other Cu of 3.84% is from CuSO4.5H 2O   968   0
  C-6 CBCE, but use NH4OH is with 1 unit of pH rising   964   0
  C-7 Similar with CBCE, but 1% Cu is from maltonic acid copper (II), and other Cu of 3.84% is from CuSO4.   5H 2O. Add in addition 0.1% zinc   955   0
  C-8 Similar with CBCE, but 1% Cu is from maltonic acid copper (II), and other Cu of 3.84% is from CuSO4.   5H 2O. Use in addition NH4OH is with 1/2 unit of pH rising   466   50
  C-9 Similar with CBCE, but 1% Cu is from maltonic acid copper (II), and other Cu of 3.84% is from CuSO4.   5H 2O. In addition with KOH with pH 1 unit that raises   175 81 (unstable products)
  C-10 Similar with CBCE, but 1% Cu is from maltonic acid copper (II), and other Cu of 3.84% is from CuSO4.   5H 2O. In addition with NaOH with pH 1 unit that raises   212 77 (unstable products)
  C-11 Similar with CBCE, but 1% Cu is from maltonic acid copper (II), and other Cu of 3.34% is from CuSO4.   5H 2O. In addition with NaOH with pH 1 unit that raises   174 81 (unstable products)
  C-12 Similar with CBCE, but 1% Cu is from maltonic acid copper (II), and other Cu of 3.84% is from CuSO4.   5H 2O. Use in addition NH4OH is with pH   147 84 (unstable products)
1 unit raises
  C-13 Similar with CBCE, but contain 1.35% rather than 1.6% alkyl polysaccharide glycosides surfactant (Triton BG-10), and the alkoxylate mercaptan (Burco TME) that adds 0.25%   900   4
  C-14 Similar with CBCE, but contain 1.35% rather than 1.6% alkyl polysaccharide glycosides surfactant (Triton BG-10), and the alkoxylate mercaptan (Burco TME) that adds 1.5%   957   0
  C-15 Similar with CBCE, but replace 1.6% alkyl polysaccharide glycosides surfactant (Triton BG-10) with 1.6% alkoxylate amine   838   10
  C-16 Similar with CBCE, but replace 1.6% alkyl polysaccharide glycosides surfactant (Triton BG-10) with 1.6% alkoxylate amine   787   16
  C-17 Similar with CBCE, but replace 1.6% alkyl polysaccharide glycosides surfactant (Triton BG-10) with 1.6% special-purpose surfactant and propargyl alcohol blend thing (Maxhib PA 315)   808   14
  C-18 Similar with CBCE, but replace 1.6% alkyl polysaccharide glycosides surfactant (Triton BG-10) with four (quaternary) aryl ammonium chloride (Dodicor 2565) of 1.6%   852   9
  C-19 Similar with CBCE, but do not add 1.6% alkyl polysaccharide glycosides surfactant (Triton BG-10). Change the boric acid of adding 1% and 1% EDTA into.   998   0
  C-20 Similar with CBCE, but do not add 1.6% alkyl polysaccharide glycosides surfactant   913   2
(Triton BG-10). Change special-purpose surfactant and the propargyl alcohol blend thing (Maxhib PA 315) of adding 5% into.
  C-21 Similar with CBCE, but do not add 1.6% alkyl polysaccharide glycosides surfactant (Triton BG-10). Change the four aryl ammonium chlorides (Dodicor 2565) of adding 5% into  543   42
  C-22 Similar with CBCE, but do not add 1.6% alkyl polysaccharide glycosides surfactant (Triton BG-10). Change the four aryl ammonium chlorides (Dodicor 2565) of adding 10% into  576   38
  C-23 Similar with CBCE, but replace 1.6% alkyl polysaccharide glycosides surfactant (Triton BG-10) with 1.6% four aryl ammonium chlorides (Dodicor 2565). Use in addition NH4OH is with 1 unit of pH rising  875   6
  C-24 Similar with CBCE, but replace 1.6% alkyl polysaccharide glycosides surfactant (Triton BG-10) with 1.6% four aryl ammonium chlorides (Dodicor 2565). In addition, 1% Cu is from maltonic acid copper (II), and other Cu of 3.84% is from CuSO4.5H 2O. Also use NH4OH is with 1 unit of pH rising  832   11
  C-25 Similar with CBCE, but replace 1.6% alkyl polysaccharide glycosides surfactant (Triton BG-10) with 1.6% special-purpose surfactant (Maxhib PA 315) with propargyl alcohol blend thing. In addition, 1% Cu is from maltonic acid copper (II), and other Cu of 3.84% is from CuSO4.   5H 2O. Also with NaOH pH is raise  692   26
1 unit
Embodiment 1 Similar with CBCE, but do not add 1.6% alkyl polysaccharide glycosides surfactant (Triton BG-10). The CIB (Maxhib AB 400) and the 6.7% gluconic acid sodium that change into 2.27% are added to 4.84% the Cu (CuSO from 19%4.5H 2O)   222   76
Embodiment 2 Similar with CBCE, but do not add 1.6% alkyl polysaccharide glycosides surfactant (Triton BG-10). The CIB (Maxhib AB 400) and the 5.4% gluconic acid sodium that change into 2.3% are added to 4.84% the Cu (CuSO from 19%4.5H 2O)   213   77
Embodiment 3 Similar with CBCE, but do not add 1.6% alkyl polysaccharide glycosides surfactant (Triton BG-10). The CIB (Maxhib AB 400) and the 4.3% gluconic acid sodium that change into 2.8% are added to 4.84% the Cu (CuSO from 19%4.5H 2O)   223   76
Embodiment 4 Similar with CBCE, but do not add 1.6% alkyl polysaccharide glycosides surfactant (Triton BG-10). The CIB (Maxhib AB 400) and the 4.0% gluconic acid sodium that change into 3.0% are added to 4.84% the Cu (CuSO from 19%4.5H 2O)   230   75
Embodiment 5 Similar with CBCE, but do not add 1.6% alkyl polysaccharide glycosides surfactant (Triton BG-10). Change into 3.0% CIB (Maxhib AB 400) and 5.0% gluconic acid sodium are added to 4.84% Cu (from 19%   181   81
  CuSO 4.5H 2O)
Embodiment 6 Similar with CBCE, but do not add 1.6% alkyl polysaccharide glycosides surfactant (Triton BG-10). The CIB (Maxhib AB 400) and the 4.2% gluconic acid sodium that change into 3.5% are added to 4.84% the Cu (CuSO from 19%4.5H 2O)  541   42
Embodiment 7 Similar with CBCE, but do not add 1.6% alkyl polysaccharide glycosides surfactant (Triton BG-10). Change the CIB (Maxhib AB 400) of adding 2% into. In addition, 1% Cu is from maltonic acid copper (II), and 3.84% Cu is from CuSO4.5H 2O obtains 4.84% Cu total amount  200   79
Embodiment 8 Similar with CBCE, but do not add 1.6% alkyl polysaccharide glycosides surfactant (Triton BG-10). Change the CIB (Maxhib AB 400) of adding 2.5% into. In addition, 1% Cu is from maltonic acid copper (II), and 3.84% Cu is from CuSO4.5H 2O obtains 4.84% Cu total amount  146   84
  C-27 Similar with CBCE, but replace 1.6% alkyl polysaccharide glycosides surfactant (Triton BG-10) with 1.6% modification varies (modified complex amine) (Deterge AT-100). In addition, 1% Cu is from maltonic acid copper (II), and 3.84% Cu is from CuSO4.5H 2O obtains 4.84% Cu total amount  820   12
  C-28 Similar with CBCE, but do not add 1.6% alkyl polysaccharide glycosides surfactant  775   17
(Triton BG-10). Change the modification varies (Deterge AT-100) of adding 3% into. In addition, 1% Cu is from maltonic acid copper (II), and 3.84% Cu is from CuSO4.5H 2O. Also with NaOH with pH 1 unit that raises
Use bottle examinations in 11 days of undiluted reserve liquid
Embodiment 9 The undiluted CBCE (contrast of test in 11 days) that is used for test in 11 days   4961   NA
Be used for the undiluted blend phase of test in 11 days for CBCE. At this moment, the CBCE of preparation does not contain 1.6% alkyl polysaccharide glycosides surfactant (Triton BG-10). The CIB (Maxhib AB 400) and the 4.0% gluconic acid sodium that change into 3.0% are added to 4.84% the Cu (CuSO from 19%4.5H 2O)   781   84
Embodiment 2
Again carry out step among the embodiment 1 in conjunction with contrast handled thing and handled thing of the present invention. The results are shown in table 2.
Table 2
Implement embodiment The composition (wt%) of the reserve liquid of test Corrosion rate on mild steel (mpy) The decline % (with respect to EP9587) of corrosion rate
Contrast EP9587[contrast]   935   NA
  C-29 The Cu of EP9587W/4.84% is from maltonic acid copper (II) rather than CuSO4.5H 2O   25 97 (expense of raw materials of increase is higher than 20%)
  C-30 EP9587 1% gluconic acid sodium   959   0
  C-31 EP9587 6.7% gluconic acid sodium   974   0
  C-32 EP9587 9% gluconic acid sodium   1000   0
  C-33 EP9587, but 1% Cu from D-copper gluconate (II) and other Cu of 3.84% from CuSO4.5H 2O   968   0
  C-34 EP9587, but use NH4OH is with the pH liter   964   0
High 1 unit
  C-35 The Cu of EP9587w/1% from the Cu of maltonic acid copper (II) and 3.84% from CuSO4.5H 2O w/0.1% zinc   955   0
  C-36 The Cu of EP9587w/1% from the Cu of maltonic acid copper (II) and 3.84% from CuSO4.5H 2O and use NH4OH is with 1/2 unit of pH rising   466   50
  C-37 The Cu of EP9587w/1% from the Cu of maltonic acid copper (II) and 3.84% from CuSO4.5H 2O and with KOH with pH 1 unit that raises   175 81 (unstable products)
  C-38 The Cu of EP9587w/1% from the Cu of maltonic acid copper (II) and 3.84% from CuSO4.5H 2O and with NaOH with pH 1 unit that raises   212 77 (unstable products)
  C-39 The Cu of EP9587w/1.5% from the Cu of maltonic acid copper (II) and 3.34% from CuSO4.5H 2O and with NaOH with pH 1 unit that raises   174 81 (unstable products)
  C-40 The Cu of EP9587w/1% from the Cu of maltonic acid copper (II) and 3.84% from CuSO4.5H 2O and use NH4OH is with 1 unit of pH rising   147 84 (unstable products)
  C-41   EP9587w/1.35％Triton BG-10   &0.25％Burko TME   900   4
  C-42   EP9587w/0.1％Triton BG-10 &   1.5％Burko TME   957   0
  C-43 EP9587w/ replaces Triton BG-10 with alkane oxidation amine   838   10
  C-44 EP9587w/ replaces Triton BG-10 with alkane oxidation amine   787   16
  C-45 EP9587w/ replaces Triton BG-10 with Maxhib PA 315   808   14
  C-46 EP9587w/ replaces with Dodicor 2565   852   9
  Triton BG-10
  C-47 EP9587w/ replaces Triton BG-10 with 1% boric acid and EDTA   998   0
  C-48 EP9587w/ replaces Triton BG-10 with Maxhib PA 315   913   2
  C-49 EP9587w/ replaces Triton BG-10 with 5%Dodicor 2565   543   42
  C-50 EP9587w/ replaces Triton BG-10 with 10%Dodicor 2565   576   38
  C-51 EP9587w/ replaces Triton BG-10 and uses NH with Dodicor 25654OH is with 1 unit of pH rising   875   6
  C-52 Replace Triton BG-10 with Dodicor 2565,1% Cu from the Cu of maltonic acid copper (II) and 3.84% from CuSO4.5H 2O and with NaOH with pH 1 unit that raises   832   11
Embodiment 10 Replace Triton BG-10 with Maxhib PA 315,1% Cu from the Cu of maltonic acid copper (II) and 3.84% from CuSO4.5H 2O and with NaOH with pH 1 unit that raises   692   26
Embodiment 11 Replace Triton BG-10 with 2.27%Maxhib AB 400 and 6.7% gluconic acid sodium, and 19%CuSO4.5H 2O   222   76
Embodiment 12 Replace Triton BG-10 with 2.3%Maxhib AB 400 and 5.4% gluconic acid sodium, and 19%CuSO4.5H 2O   213   77
Embodiment 13 Replace Triton BG-10 with 2.8%Maxhib AB 400 and 4.3% gluconic acid sodium, and 19%CuSO4.5H 2O   223   76
Embodiment 14 Replace Triton BG-10 with 3.0%Maxhib AB 400 and 4.0% gluconic acid sodium, and 19%CuSO4.5H 2O   23   75
Embodiment 15 With 3.0%Maxhib AB 400 and 5.0%   181   81
Gluconic acid sodium replaces Triton BG-10, and 19%CuSO4.5H 2O
Embodiment 16 Replace Triton BG-10 with 3.5%Maxhib AB 400 and 4.2% gluconic acid sodium, and 19%CuSO4.5H 2O   541   42
Embodiment 17 Replace Triton BG-10 with 2.0%Maxhib AB 400, and 1% Cu from the Cu of maltonic acid copper (II) and 3.84% from CuSO4.5H 2O   200   79
Embodiment 18 Replace Triton BG-10 with 2.5%Maxhib AB 400, and 1% Cu from the Cu of maltonic acid copper (II) and 3.84% from CuSO4.5H 2O   146   84
  C-53 Replace Triton BG-10 with Deterge AT-100, and 1% Cu from the Cu of maltonic acid copper (II) and 3.84% from CuSO4.5H 2O   820   12
  C-54 Replace Triton BG-10 with 3% Deterge AT-100, and 1% Cu from the Cu of maltonic acid copper (II) and 3.84% from CuSO4.5H 2O reaches with NaOH 1 unit of pH rising   775   17
  C-55 The undiluted CBCE (contrast of test in 11 days) that is used for test in 11 days   4961   NA
Embodiment 19 The undiluted blend phase that is used for test in 11 days replaces Triton BG-10 for EP9587: usefulness 3.0%Maxhib AB 400 and 4.0% gluconic acid sodium, and 19%CuSO4.5H 2O   781   84

Claims (21)

1. method that in stove, prevents metal surface corrosion, the wherein coal burning that acts as a fuel, the preservative treatment thing that described method is included in the blend thing of the water-soluble salt that comprises primary amino alcohols and boric acid or described boric acid exists and descends to burn described coal.
2. method claimed in claim 1, wherein said coal is pulverized, and described handled thing is that the form with the aqueous solution applies on described coal dust.
3. the method described in the claim 1, wherein said handled thing are that the form with the aqueous solution is sprayed in the described stove.
4. method claimed in claim 1, wherein said blend thing also comprise and have uncle's amino alcohol that the tertiary amine official can spend.
5. method claimed in claim 1, wherein said blend thing comprises the 2-ethylaminoethanol.
6. method claimed in claim 4, wherein said uncle's amino alcohol is triethanolamine.
7. method claimed in claim 6, wherein said coal burns in the presence of copper.
8. method claimed in claim 2, the wherein said aqueous solution is sprayed on the described coal dust with the amount of every ton of described coal dust 100ml～1 L.
9. method claimed in claim 8, the wherein said aqueous solution is sprayed on the described coal dust with the amount of every ton of described coal dust 300ml～1 L.
10. method claimed in claim 6, wherein said 2-ethylaminoethanol, triethanolamine and boric acid or its salt are present in the aqueous solution with the total amount of 1～10wt%.
11. method claimed in claim 10, it also is included in the gluconic acid sodium in the described aqueous solution, and the amount that described gluconic acid sodium exists in the described aqueous solution is 1～10wt%.
12. coal dust acts as a fuel, and burning is to improve the method for stove operation in the presence of copper in stove, improvement also is included in the preservative treatment thing and has the described coal of lower burning, and described handled thing comprises 2-ethylaminoethanol, triethanolamine and boric acid or its water-soluble salt.
13. the described method of claim 12, wherein said copper and described preservative treatment thing are sprayed on the described coal with the form of the single aqueous solution.
14. the described method of claim 12, wherein said preservative treatment thing also comprise gluconic acid or its water-soluble salt.
15. the described method of claim 14, wherein said preservative treatment thing comprises gluconic acid sodium.
16. the described method of claim 15, wherein said 2-ethylaminoethanol, triethanolamine and boric acid or its salt are present in the described aqueous solution with the total amount of 1～10wt%, the amount that is present in the described gluconic acid sodium in the described aqueous solution is 1～15wt%, and wherein with Cu2+The form amount that is present in the described copper in the described aqueous solution be 1～20wt%, and wherein the described aqueous solution of 100ml～1L is sprayed on the described coal dust.
17. be used for preventing at stove the anticorrosive composite of metal surface corrosion, it comprises the aqueous solution that contains following material:
(a) 2-ethylaminoethanol;
(b) triethanolamine; With
(c) boric acid or its water-soluble salt.
18. the described anticorrosive composite of claim 17, it also comprises (d) gluconic acid sodium.
19. the described anticorrosive composite of claim 18, it also comprises (e) copper ion source.
20. the described anticorrosive composite of claim 19, wherein said copper ion source are five hydrated copper sulfates or D copper gluconate (II).
21. the described anticorrosive composite of claim 19, wherein said (a), (b) and (c) be present in the described aqueous solution with the total amount of 1～10wt%, the amount that is present in described (d) in the described aqueous solution is 1～15 wt%, and the amount that wherein said copper ion source (e) exists is enough to provide the Cu of 1～20wt% in the described aqueous solution2+Ion.
CNB2004800079997A 2003-02-19 2004-01-26 A non-corrosive treatment to enhance pressurized and non-pressurized pulverized coal combustion Expired - Fee Related CN100351430C (en)

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CA2516491C (en) 2013-07-09
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JP4440919B2 (en) 2010-03-24
US20070033864A1 (en) 2007-02-15

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