Tuesday, January 29, 2019

Jual Epoxy Coating for Metal

Steel will rust only if water and oxygen are both present and the rusting process is greatly accelerated by pollutants in the atmosphere, such as sulphur dioxide from the burning of oil, coal, or gas and chlorides from de-icing salts or marine atmospheres. Solid pollutants can be hygroscopic and may promote localised attack (e.g. corrosion pitting) at specific points on exposed steel. Protective systems must be resistant to attack by such pollutants and should be applied only to surfaces from which they have been removed.

To ensure good coating adhesion, it is essential that the surface to be coated is rendered free of dirt, dust and debris that might affect performance. Water-soluble residues, if left on the surface, will cause rapid deterioration at the interface with paint when the coating is exposed to moisture.

Paint is the most commonly used material to protect steel, and in practice the term, ‘paint’ covers a wide range of materials with different properties. The application of paint is comparatively easy with no limitation on the size of steelwork that can be treated.

For structural steelwork the paint film thickness is important for lasting protection since it is difficult to obtain perfect application under construction conditions. Best results are obtained when coatings are applied in heated enclosed workshops; units for bridge structures and building framework can be coated in this manner before erection and additional coats may be applied on site, where required.

EPOXY PRIMERS
Epoxy primers are two-pack materials utilising epoxy resins and usually have either polyamide or polyamine curing agents. They are pigmented with a variety of inhibitive and non-inhibitive pigments. Zinc phosphate epoxy primers are the most frequently encountered and give the best durability within the group.

Epoxy coatings are generally packaged in two parts that are mixed prior to application. The two parts consist of 1) an epoxy resin which is cross-linked with 2) a co-reactant or hardener. Epoxy coatings are formulated based upon the performance requirements for the end product. When properly catalyzed and applied, epoxies produce a hard, chemical and solvent resistant finish. They are typically used on concrete and steel to give resistance to water, alkali and acids.


For any query Hardener and Epoxy Resin for Metal Coating please feel free to contact us.


Regards,

Michael
michael@sanminglobe.com
WA 0858944436642

Thursday, January 24, 2019

EDTA CLEANING PROCESS

Chemical Cleaning of Boilers :

Pre-operative
> Maintaining steam quality at the turbine inlet.
> Minimizing corrosion of the metal surface of boiler.

Post-operative
> Improving heat transfer in the system.
> Enhancing efficiency of the power plant.
> Minimizing under deposit corrosion of the metal surface of boiler.
> Minimizing plant outage due to boiler tube failures.


What is EDTA?
EDTA or Ethylene Di-amine Tetra Acetic Acid is a strong chelating agent having ability to form stable complexes with transition metal ions  present in boiler such as of iron and copper etc.

Alkali Flushing

  • Alkali Flushing 
          > Removes polar organic material such as oil, grease etc. from the metal surface
          > Alkali reacts with polar organic materials to form  soluble glycerols and salts.
          > Loose deposits, dust, etc. are also removed
          > TSP and DSP is used as alkali
  • Hot Water Flushing
  • Cold Water Rinse

ALKALI FLUSHING PROCEDURE
*ALKALI FLUSHING
  • Alkali solution made by  adding TSP ( 01%) & DSP ( 0.05% ) with dm water.
  • Solution is filled into boiler through bottom ring header & economizer drains up to NWL.
  • Boiler is fired. Water temperature is raised to 140 oC and boiler tripped.
  • Solution is allowed to cool till 95 oC and then drained.
* HOT WATER FLUSHING
  • System is filled with DM Water and temperature raised to 1400 oC and allowed to cool to 95 oC and drained subsequently.

* COLD WATER RINSE
  • System is filled with DM Water and drained. The process is repeated till phosphate level is less than 10 ppm.

EDTA Cleaning
  • EDTA pickling& passivation
  • Treated DM water rinsing
PREPARING EDTA SOLUTION
EDTA solution is prepared for total boiler volume by mixing
  1. EDTA Ammoniated ( 40 % ).  : 4 %
  2. BHEL Max ( inhibitor ).          : 0.15-0.2% w/v
  3. BHEL Sol ( inhibitor )             : 0.15-0.2% w/v
  4. Hydrazine Hydrate                  : 1000 ppm
  5. Ammonia.                                : for setting pH as 9.5-9.8


EDTA PICKLING & PASSIVATION
  • The system is filled with EDTA solution upto drum NWL.
  • The boiler is lighted up and temperature raised to 140 oC and maintained for 4 hours and sample solution checked for iron, pH and EDTA concentration every 1/2 an hour.
  • The boiler is tripped on achieving 3 consecutive readings of iron concentration.
  • The solution is allowed to cool till 95 oC and drained.

TREATED DM WATER RINSING
  • A. solution of hydrazine ( 0.01-0.02 % ) and ammonia with DM Water is prepared ( pH 9.5-9.8 ) and the system is filled with this solution.
  • Boiler is fired and temperature raised to 120 oC.
  • Boiler is tripped and allowed to cool. When the temperature comes down to 95 oC, the solution is drained.
SUPER HEATER BACK FLUSHING
Super heater is filled with a solution of hydrazine ( N2H4 . 50 ppm ) & Ammonia ( pH > 9.5 ) in DM Water through SH drain header. When the solution comes through SH openings in the drum, back flushing is continued for 10-30 minutes and drained.


EDTA is a strong chelating agent with transition metal ions and hence has an efficient action as metal remover.

Process advantages
  • Use of nitrogen & its system is eliminated.
  • Auxiliary steam is not required at all.
  • DM Water and fuel consumption is less
  • Shorter cycle tie ( 5 days ).
  • Less temporary piping required
  • Less number of chemicals required
  • Ease of handling
  • Effluent treatment easy
  • Economical
Conclusion
  • EDTA cleaning process ensures efficient cleaning and passivation of boiler internal surfaces.
  • EDTA cleaning has obvious advantages over conventional HCL cleaning with minimum effect on the base metal surface.
Source : by HC Madan, SS Chauhan, Dhruv Garg

For any further info and query please feel free to contact us.


Stock availability :



Tuesday, January 15, 2019

Jual Caustic Soda Flake


  1. Caustic  Soda Flake dental  humus kimia NaOH berfungsi untuk mengendalikan tingkat keasaman pada proses pengolahan air atau water treatment.

  2. Selain itu  NaOH adalah salah satu bahan baku pembuatan Sodium Hypo/ NaOCl dalam skala industri.
  3. NaOH juga sering digunakan pada proses regenerasi anion resin yang terdapat pada anion exchanger, pada unit pembuatan air bebas mineral atau purified water.

  4. NaOH merupakan salah satu bahan kimia terpenting dalam industri kertas. digunakan sebagai larutan untuk membersihkan selulosa kayu dari material yang tidak diinginkan.
  5. Dalam industri daur ulang kertas, NaOH dimanfaatkan untuk memisahkan tinta dari serat kertas, sebelum digunakan kembali.

  6. NAOH juga bermanfaat sebagai bahan kimia anti mampet, untuk mengatasi masalah saluran pembuangan dari dapur yang mampet.

  7. NaOH juga memegang peranan penting dalam industri minyak dan gas, yang digunakan untuk mengendalikan alkalinitas dan menguraikan material organik. Selain itu, NAOH bermanfaat untuk menghilangkan gas-gas pengotor seperti senyawa sulfur dan karbon dioksida.

  8. Manfaat lain :
  9. >  Proses produksi epoxy resin.
  10. >  Proses produksi fuel cell.
  11. >  Proses pembuatan berbagai macam obat dan produk farmasi seperti anticoagulant, obat untuk mengurangi kolesterol dalam darah dan obat penghilang rasa sakit.
  12. Dalam industri tekstil, caustic soda digunakan dalam pemrosesan kapas disamping juga dalam proses pewarnaan serat sintetik seperti nilon dan polyester.
  13. Dalam industri sabun dan deterjen, caustic soda digunakan dalam reaksi saponifikasi, yaitu reaksi konversi minyak nabati menjadi sabun. Caustic soda juga digunakan dalam pembuatan surfaktan anionic yang merupakan komponen penting dalam produk deterjen maupun produk pembersih.

Informasi pemesanan silahkan hubungi kami.

MT
michael@sanminglobe.com

Thursday, January 10, 2019

Jual HEDP as corrosion inhibitor

CAS No.  2809-21-4 
Molecular Formula:   C2H8O7P2                Molecular weight: 206.02
Structural Formula: 
1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP)

Properties:

HEDP is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn ions to form stable chelating compounds.It can dissolve the oxidized materials on these metals’ surfaces. HEDPshows excellent scale and corrosion inhibition effects under temperature 250℃. HEDP has good chemical stability under high pH value, hard to be hydrolyzed, and hard to be decomposed under ordinary light and heat conditions. Its acid/alkali and chlorine oxidation tolerance are better than that of other organophosphoric acids (salt). HEDP can react with metal ions in water system to form hexa-element chelating complex, with calcium ion in particular. Therefore, HEDP has good antiscale and visible threshold effects. When built together with other water treatment chemicals, it shows good synergistic effects.

Specification:


Usage:

HEDP is used as scale and corrosion inhibition in circulating cool water system, oil field and low-pressure boilers in fields such as electric power, chemical industry, metallurgy, fertilizer, etc.. In light woven industry, HEDP is used as detergent for metal and nonmetal. In dyeing industry, HEDP is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP is used as chelating agent. The dosage of 1-10mg/L is preferred as scale inhibitor, 10-50mg/L as corrosion inhibitor, and 1000-2000mg/L as detergent. Usually, HEDP is used together with polycarboxylic acid.

Synonyms:


MT
michael@sanminglobe.com














OTHERS

> PARAFORMALDEHYDE
> DECYL ALCOHOL
> CHOLINE CHLORIDE
>

Jual Paraformaldehyde

Jual Paraformaldehyde harga bersaing, barang import. Kemasan 25 kg/zak. Stock tersedia.

Apa itu Paraformaldehyde?

Paraformaldehyde merupakan formaldehyde cair dalam bentuk padat, yang dibentuk oleh polimerisasi formaldehyde dengan tingkat khas polimerisasi 8 -100 unit. Karena paraformaldehyde pada dasarnya merupakan bentuk padat dari formaldehyde atau formaldehyde cair, sehingga memiliki karakteristik yang sama tetapi dengan beragam aplikasi.





Mengenai fungi dan kegunaan silahkan search di google banyak sekali informasi mengenai ini.

Atau silahkan buka  link : Paraformaldehyde


Salam,

MT
michael@sanminglobe.com

Friday, January 4, 2019

GALAXY 610

GALAXY 610 as trade name for chemical name Ethylene Glycol Distearate





APPLICATIONS :
> As a opacifying and pearlizing agent in shampoos, liquid soaps, bath and shower gels 
   bubble bath, cold creams, cleansing lotions and body wash.
As a secondary emulsifier in creams, lotions and conditioners


for any query or any further info please fee free to contact us.

Michael
michael@sanminglobe.com
085894436642 ( wa )