The National Board of Boiler and Pressure Vessel Inspectors

All fossil fuels, with the possible exception of natural gas, contain constituents that will promote corrosion on the fire side of boiler components. The "bad actors" are compounds of sulfur, vanadium and sodium; but in the case of municipal-refuse boilers, chlorine is an increasing concern.

4-7 Recovery Boiler Fireside Deposits and Plugging Prevention

This "moving target" makes deposit control a ... mainly sodium sulphate (Na2SO4) and sodium carbonate (Na2CO3) with a small amount of sodium chloride (NaCl), and reduced sulphur compounds, such as Na2 ... various locations in the boiler. The carbonate content in deposits decreases dramatically toward the back side of the boiler. 4.7-4 Na 2CO 3 ...

2/18/2014 - The Association of Water Technologies

2/18/2014 10 Condensate inlet and Make Up line are close together. This will cause pitting unless the valve and the "T" are replaced with Stainless Steel. What is The Surge Tank? • Used to control transient heat migration • Can be used as a feed water tank and feed the boiler in lieu of the DA • Can be an integral part of the DA (two

What is caustic embrittlement? - Quora

Caustic embrittlement is the phenomena in which the material of a boiler becomes brittle due to the accumulation of caustic soda. * As water evaporates in the boiler, the concentration of sodium carbonate increases in the boiler. Sodium carbonate ...

Chemical acceleration of a neutral granulated blast ...

This paper presents results of a study on chemical acceleration of a neutral granulated blast-furnace slag activated using sodium carbonate. As strength development of alkali-activated slag cements containing neutral GBFS and sodium carbonate as activator at room temperature is known to be slow, three accelerators were investigated: sodium hydroxide, ordinary Portland cement and a combination ...

Soda Solvay® | Solvay

SODIUM CARBONATE IPH is a superior grade of anhydrous sodium carbonate. It can be used in pharmaceutical application as API (Active Pharmaceuticals Ingredient), as excipient with dessicant properties in effervescent tablets, as high substance with pH-buffering properties in cosmetic.

Feed Water Treatment to Avoid Corrosion - Engineering ToolBox

Sodium erythorbate; Sodium Sulfite. Sodium Sulfite is a white crystalline or powder soluble in water. Sodium Sulfite decomposes on heating and is prepared from sulfur dioxide and sodium carbonate or caustic soda. Sodium Sulfite is an effective scavenger for use in systems operating below 1000 psi.

Refractories by Sodium Carbonate

Refractories by Sodium Carbonate Ying Zhao 1,*, Guishi Cheng 1, Yu Xiang 1, ... is studied from the viewpoint of slag and sedimentt; the anti-sodium corrosion performance of ... Corrosion of the refractory material by sodium salts in a waste liquid boiler.

Boiler Water Treatment | Sodium Chloride | Sodium Hydroxide

Sodium carbonate is converted into Sodium hydroxide, which increases the alkalinity of the water. Lime-Soda Treatment The problems: Increased levels of soluble sodium salts in the boiler, leading to dangers of foaming and carry-over. Uncontrolled production of sodium hydroxide leading to increased levels of caustic alkalinity.

Using of congruent phosphate as equilibrium phosphate ...

2 Methods of boiler internal scale control 2.1 Carbonate control Before the acceptance of phosphate treatment in the 1930's, calcium sulphate scaling was a major boiler problem. Sodium carbonate treatment was used to precipitate calcium as calcium carbonate to prevent formation of calcium sulphate.

US4874541A - All-in-one boiler water treatment composition ...

An all in one boiler water treatment composition includes an oxygen scavenging system, an alkalinity control agent such as sodium carbonate, diethylaminoethanol as a condensate treatment, a polymer system including polymethacrylate or polyacrylate and polymaleic acid along with an oxygen scavenging system. The oxygen scavenging system includes the diethylaminoethanol, a polyhydroxy acid and a ...

FAQs | Weil-McLain Boilers & Products

Sodium carbonate (up to one pound for every 30 gallons of water content) or sodium hydroxide (lye) (up to one pound for every 50 gallons) may be used. Check pH level after cleaning. It should be between 7 and 8.5. A small amount of cleaner maybe added to adjust the pH up to the proper range. DO NOT use petroleum-based products in the boiler.

Power Engineering 4th Class B 6 chapter 1 Flashcards | Quizlet

Pitting of boiler metal may be prevented by: a. Preheating boiler feed water to between 80 and 105°C ... slag deposits in superheaters b) decreased steam pressure c) increased steam pressure d) increase in boiler efficiency e) tube failure. E. ... A. Sodium carbonate B. Sodium anions C. Sodium cations D. Sodium bicarbonate

Assessing the chemical involvement of limestone powder …

carbonate significantly control the sodium carbonate activation process. According to the previous researches [4, 23, 28–30], the main reaction products of sodium carbonate activated slag are C–(A)–S–H gel, calcium carbonate (CaCO 3), gaylussite (Na 2-Ca(CO 3) 2 10H 2O), hydrotalcite (Mg 6Al 2CO 3(OH) 16-4H 2O), etc. With respect to ...

US9939395B2 - Method for measuring ash/slag deposition in ...

The slag control agent reacts with sulfuric acid to form innocuous, non-acidic compounds, thereby reducing acid emissions and corrosion of process surfaces within the utility boiler. The slag control agent also reacts or complexes with any undesirable vanadium compounds that may be …

What do I use to stop boiler foaming and where do it get ...

What do I use to stop boiler foaming and where do it get it. ... allowing one to control the alkalinaty by which of the sodium phosphates is used.When the reaction is with sodium carbonate the products are the insoluable tricalcium phosphate and sodium carbonate which in turn controls calcium sulfate scale and also hydrolyzes to sodium ...

ALKALINITY CONTROL - Guardian CSC

Sodium hydroxide and/or sodium carbonate may be present as excess treating chemicals in the effluent from a lime-soda softener; the use of such pre-treating equipment automatically provides the alkali required for alkalinity control in the boiler water. Most raw waters contain bicarbonate (HCO-). So does effluent waters from sodium cycle and ...

Boiler water - Wikipedia

Boiler water is liquid water within a boiler, or in associated piping, pumps and other equipment, that is intended for evaporation into steam.The term may also be applied to raw water intended for use in boilers, treated boiler feedwater, steam condensate being returned to a boiler, or boiler blowdown being removed from a boiler.

Fuel Ash Corrosion

All fossil fuels, with the possible exception of natural gas, contain constituents that will promote corrosion on the fire side of boiler components. The "bad actors" are compounds of sulfur, vanadium and sodium; but in the case of municipal-refuse boilers, chlorine is an increasing concern.

Air Pollution Control - Fuel Tech Inc

In addition to the application of TIFI for SO 3 control, Fuel Tech can combine this approach with the injection of trona or other sodium based sorbents such as sodium bi-sulfite (SBS) or sodium carbonate/bi-carbonate into the duct downstream of the economizer or air heater. Systems designed for the injection of dry magnesium hydroxide or dry ...

Sodium bicarbonate | หม้อไอน้ำ boiler

Tagged with: Blowdown, Blowdown Recovery, boiler, boiler & pressure vessel 2010, boiler water tube, boiler คือ, boiler คือ อะไร, boilers, hot oil boiler, Nonhardness salt, ph, ph boiler, PH น้ำในหม้อน้ำไม่คงที่, Sodium bicarbonate, Sodium carbonate, steam trap armstrong, steam trap ...

Best Practices in Cleaning Internal Surfaces of High ...

The drum internals are installed before start of alkali boil out. Normally sodium carbonate and sodium phosphate in equal quantity along with a detergent to about 0.05 to 0.1% by volume are used for alkali boil out. After the boil out solution is added, the drum level is checked though a gauge glass and confirmed before firing the boiler.

Controlling the reaction kinetics of sodium carbonate ...

Control of the kinetics of reaction of sodium carbonate-activated slag has been achieved in this study by adding CLDH as a carbonate binding agent, based on the understanding of the relationship between slag chemistry and the role of the functional group of the activator when producing activated slag …