A kind of boiler water processing compound
Technical field
The invention belongs to water treatment field, be specifically related to the boiler water processing compound.
Background technology
Industrial Boiler and boiler for domestic inevitably problems such as incrustation scale, corrosion can occur through long-play.Because the generation of dirt makes the thermal conduction variation, so that boiler renders a service and reduces, so be difficult to reach the nominal steam output; And because the thermal conduction variation makes metal overheated, under the BP effect, boiler tube generation bulge, even blast.Therefore, after the gyp, should take necessary method scale removal.General way is through in boiler, dropping into the water-treating agent of boiler of some amount, with Ca in the pot water
2+, Mg
2+Or SiO
2Material generation physics or chemical action etc. easy scale formation form loose grain slag, discharge outside the boiler through blowdown, or make scale-forming ion become dissolved state to be present in the stove water, to reach the purpose that prevents or alleviate gyp.
At present, general water-treating agent of boiler mainly contains following several kinds:
1, soda ash method: this method is mainly thrown in soda ash (Na in pot
2CO
3), and keep certain CO
3 2-Concentration reduces the Ca in the pot water
2+, Mg
2+, still for the feedwater of complicated component, the effect of soda ash method is also unsatisfactory.
2, soda ash-tannin extract method: because the result of the common cooperation of soda ash and tannin extract is more effective with soda ash than single.
3, soda ash-sodium humate method: this method is more effective than soda ash-tannin extract method again, mainly is the water treatment effect cause more superior than tannin extract of sodium humate.
4, trisodium one glue method: trisodium one glue method refers to yellow soda ash, sodium hydroxide, tsp and tannin extract, and this method water treatment effect is more effective than soda ash-sodium humate method.
5, four sodium methods: four sodium methods refer to yellow soda ash, sodium hydroxide, tsp and sodium humate, and the treatment effect of this method is superior to trisodium one glue method again, and various water quality are all had good flexibility.
6, organic poly-phosphate adds the soda ash method: this method is the water treatment agent that just grew up in recent years, and effect is all better than former kinds of treatment processs.
Hydrolysis takes place in yellow soda ash easily, generate NaOH, and pot inner pressure is high more, Na
2CO
3Percent hydrolysis is big more, the OH in the pot water
-Concentration is big more, causes corrosion of metal easily, and the embrittlement phenomenon takes place; Tsp is higher in water temperature, when basicity is big, the tricalcium phosphate of generation become mobile big, be easy to the aquation phosphorus lime sediment that blowdown is removed, on the contrary, if do not reach suitable pH value, calcium phosphate then becomes hard incrustation scale; Organic poly-phosphate, ROHM series scale inhibition, dispersion agent are medicaments the most frequently used in the Treatment of Industrial Water, because its stability better, unlike the such facile hydrolysis of inorganic polyphosphate; Often do not consider their drug effects in system in use; Their drug effects in system have the certain hour scope in fact, if improper use, these medicaments can not be given full play to its due water conditioning effect; After the poly-phosphate hydrolysis, generate orthophosphoric acid salt, this product can form deleterious Ca
3(P0
4)
2Deposition suppresses its performance, has a strong impact on the control to system's corrosion and fouling.
Therefore, present medicament technology can only reduce fouling and corrosion rate, and can't eliminate the iron contamination in the feedwater, and through after a while, boiler still will be shut down cleaning.If boiler systems fouling or corrosion must be shut down, after employing chemistry and physics clean, can adding medicine control.
Summary of the invention
To the deficiency that exists in the prior art; The purpose of this invention is to provide a kind of New-type boiler water treatment compound; This compound can be removed old dirt, prevents that new dirt from forming the hard particles in the removal system and other salts such as iron, chlorine, silicon etc.; This medicament is used for steam boiler can also suppress foaming, priming, prevents that feedwater from getting into steam.
The technical scheme that the present invention adopts is following: a kind of boiler water processing compound, it is characterized in that, formulated by following raw materials by weight percent:
Weibull sodium: 10%~20%, sodium humate: 4%~10%, algae river flowing from Guizhou Province through Hunan into Dongting Lake acid sodium: 10%~12.5%, glycol derivative: 5%, xylogen: 8.5%~12%, starch: 3.6%~6%, sodium hydroxide: 1%~2%, tsp: 2%, surplus is a softening water.
Further, said boiler water processing compound optimization proportioning is:
Weibull sodium: 20%, sodium humate: 5%, algae river flowing from Guizhou Province through Hunan into Dongting Lake acid sodium: 12.5%, glycol derivative: 5%, xylogen: 8.5%, starch: 3.6%, sodium hydroxide: 1%, tsp: 2%, softening water: 42.4%.
Weibull sodium in the compound of the present invention can adsorb remnant oxygen in the stove, forms the tannate protective membrane, thereby avoids metal to be corroded; Effects such as sodium humate and algae river flowing from Guizhou Province through Hunan into Dongting Lake acid sodium can decompose calcium, magnesium salts under alkaline condition, absorption, complexing, demineralized water, and stop crystal growing; The grain slag viscosity that is generated is little; More liquid, be prone to get rid of with blowdown, have stronger osmosis; Make loss of adhesion between old incrustation scale and metallic surface, thereby come off; Glycol derivative is adsorbable in steam steam bubble flow interface both sides, impels water to flow downward and causes the steam steam bubble to break, and effectively suppresses foaming and priming; Xylogen is a kind of unformed aromatics, and active extremely strong, lignin molecule has very strong penetrating power, and it can be penetrated in the hole of bird nest, and at high temperature molecular volume can expand tens of times, utilizes its physical properties that incrustation scale is peeled off from the metallic surface; Starch is neutral macromolecule organic, and very high molecular weight is arranged, the salt of temporary hardness, permanent hardness and the iron content in the ability planar water, chlorine, silicon etc., and formation has flowability, amorphous, noncohesive mud, is easy to get rid of; Sodium hydroxide and tsp mainly help out, and the pH value of keeping water is weakly alkaline, thereby help the reaction of organism particle, and the sodium hydroxide in the water and the content of tsp are very low, have significantly reduced the danger that caustic embrittlement takes place.
Compare prior art, the present invention has following beneficial effect:
1, the present invention adopts organic chemistry medicament and the compound use of inorganic chemistry medicament can effectively remove old dirt; Prevent the formation of new dirt; Hard particles in the removal system; And other salts such as iron, chlorine, silicon, or the like, regulate mud and make it to be easy to remove iron rust in the removal system and corrosion through blowdown.
2, medicament of the present invention can produce the layer of metal protective membrane through chemical reaction on the surface of hardware; Effectively avoid equipment and Corrosion of Pipeline, improve the boiler effect, prolonged boiler work-ing life; Reduce the boiler attendance maintenance cost, guarantee the operational use time of boiler.
3, medicament of the present invention can onlinely use, and under the effect of medicament, old dirt comes off, and stops new dirt to produce.After draining of boiler mouth connection by-passing filter device physical was removed old dirt, feedwater turned back to service pump, thereby reaches the effect of energy-saving and emission-reduction.
4, medicament of the present invention is used for steam boiler and can suppresses foaming, and priming prevents that feedwater from getting into steam.
Embodiment
Below in conjunction with embodiment the present invention is described further.
Embodiment 1:
In the 1000 gram boiler water processing compounds: Weibull sodium 200 grams (20%), sodium humate 50 grams (5%), algae river flowing from Guizhou Province through Hunan into Dongting Lake acid sodium 125 grams (12.5%); Glycol derivative 50 grams (5%); Xylogen 85 grams (8.5%), starch 36 grams (3.6%), sodium hydroxide 10 grams (1%); Tsp 20 grams (2%), softening water 424 grams (42.4%) mix by weight and form.
Embodiment 2:
In the 1000 gram boiler water processing compounds: Weibull sodium 150 grams (15%), sodium humate 100 grams (10%), algae river flowing from Guizhou Province through Hunan into Dongting Lake acid sodium 150 grams (15%); Glycol derivative 50 grams (5%); Xylogen 100 grams (10%), starch 50 grams (5%), sodium hydroxide 10 grams (1%); Tsp 20 grams (2%), softening water 395 grams (39.5%) mix by weight and form.
Embodiment 3
In the 1000 gram boiler water processing compounds: Weibull sodium 100 grams (10%), sodium humate 40 grams (4%), algae river flowing from Guizhou Province through Hunan into Dongting Lake acid sodium 100 grams (10%); Glycol derivative 50 grams (5%); Xylogen 120 grams (12%), starch 60 grams (6%), sodium hydroxide 10 grams (1%); Tsp 20 grams (2%), softening water 510 grams (51%) mix by weight and form.
On three 10T low pressure, 2.0 MPa steam boilers, make simultaneously with medicament after three months test-results following:
Embodiment |
The ton steam boiler |
Moisturizing per ton adds dose |
Effect before using |
Effect after the use |
Embodiment 1 |
10T |
30 grams |
The 1mm incrustation scale is arranged |
Incrustation scale comes off fully, and water quality is limpid, and has protective membrane to form.Each item index reaches and surpasses GB GB/T2008 requirement |
Embodiment 2 |
10T |
30 grams |
The 1mm incrustation scale is arranged |
Incrustation scale comes off basically, the little apparent muddiness of water quality, and filtration starts ordinary.Each item index reaches GB GB/T2008 requirement |
Embodiment 3 |
10T |
30 grams |
The 1mm incrustation scale is arranged |
Incrustation scale comes off basically, and fragmentary incrustation scale is arranged.Water quality is general.Each item index reaches GB GB/T2008 requirement |
Need to prove at last; Above embodiment is only in order to explain technical scheme of the present invention but not the restriction technologies scheme; Although the applicant specifies the present invention with reference to preferred embodiment, those of ordinary skill in the art should be appreciated that those and technical scheme of the present invention is made amendment or is equal to replacement; And do not break away from the aim and the scope of present technique scheme, all should be encompassed in the middle of the claim scope of the present invention.