REGARDING STEAM TRAPS

Dear Sir,

We would like to quote you the following quotation for the Steam Traps on minimum cost prices. I assure you that you will find excellent result for the long period. We are pleased to submit our proposal for your kind consideration and perusal consists of the following grounds.

Steam Trap     1/2”                                        15,000 /=        

                        3/4”                                         16,000 /=

                          1”                                          18,000 /=

                        1-1/2”                                      38,000 /=

                          2”                                           40,000 /=                                

Type:  High Capacity / Free Float Steam Trap (without liver & hinges problem)

            i.e.: Maintenance Free Type, with built in Strainer inside.           

Make:    NICHOLSON / U.S.A. BRAND

WARRANTY FULL: ONE YEAR / FREE REPLACEMENT

Please don’t hesitate to call us if you may have any query pertaining to this matter.

Thanking you very much and looking forward to hearing from you soon.

Please send your purchase order accordingly.

Yours Sincerely,

For TECHNO ENGINEERING,

(SYED FARHAN IMAM)

Sales & Marketing Executive

OUR BEST RECOMMENDATIONS FOR
BOILER MAINTENANCE & WATER TREATMENT

It must be understood that every  Steam Boiler system requires a proper Boiler Water Treatment Program with regular water analyses, adequate regulated blowdowns, correct maintenance, periodic safety checks and periodic inspection follow-up.  All of these are necessary for long life and efficient boiler service.  These are some of the basic essentials in your boiler program:

1. Soft water should be used at all times to prevent scale build-up and tube stoppage. Test daily and regenerate water softener when hardness exceeds 17 parts per million (or 1.0 Grain per Gallon).

2. Boiler water compound should be selected and regulated on the basis of actual water analysis. This compound should have the proper chemicals to treat for:  (1) hardness up to 5.0 GPG, (2) maintain a pH level of 10.0 to 11.5 in the boiler water, (3) excessive oxygen by maintaining the Sodium Sulfite level between 40 to 100 ppm in the boiler water, (4) a protective metal coating material, and (5) other conditions found in the water analysis.

3. The compound must be added in adequate quantities uniformly throughout the shift. An automatic chemical feed system should be purchased or provided by your chemical supplier so these chemicals are induced into the condensate holding tank or feedwater line as recommended by your chemical supplier. We recommend these chemicals be introduced as far before the boiler as possible to also protect the feed tank and feed lines.

4. Regular Water Analysis should be made as often as possible but at least every 30 days to assure water treatment is properly regulated. If there are indications of scale, corrosion, or any other unfavorable condition, water analysis may need to be performed more often until condition is corrected.

5. Partial blow-downs should be made in accordance with the Blowdown Instructions.  The Boiler blow-downs must be made sufficiently so that total dissolved solids in the Boiler water between 2600-3200 PPM (3600-4200 micromhos/cm) and mud and sediment are removed from the boiler. The type of blow-down and period between blowdowns can be extended only when the total dissolved solids in the boiler are maintained below between 2600-3200 PPM (3600-4200 micromhos/cm).  

6. Regular Internal Tube Inspections should be made every 60 days until the Water Treatment Program is properly regulated. Thereafter, every 6-12 months or more often if an unsatisfactory condition is found. This is done by removing at least two (2) of the plugs on the bottom and top of each Tube Header Section. Internal Drum Inspection is made by removing the Inspection Plugs on the heads of the Steam Drum. Water feed inlet should be Inspected every 6 months by removing the plug on the inlet fitting to Boiler Drum.  Clean as necessary.

Note: always use a high temperature Teflon based anti-seize compound when re-installing plugs.

7. The Return Tank and pump suction strainer should be inspected and flushed clean every 90 days or as needed. This is important to prevent any sediment accumulation from causing stoppage, or damage to Pump 

or Boiler.

8. Proper Grounding of the boiler is necessary if there is a possibility of electrolysis (a form of corrosion) and to help maintain normal tube life. Periodic internal inspections are necessary to determine if the thin protective coating has developed in the tubes.  Proper grounding of the boiler requires driving a copper rod of 6’ or more into the ground. Readings in excess of 35MV on ungrounded installations require grounding to prevent the onset of a corrosion problem.

WARNING:  DO NOT BE MISLED BY PURCHASING YOUR COMPOUND AT A CHEAPER PRICE OR FROM A SUPPLIER THAT IS NOT FULLY COMPETENT TO PROVIDE YOU WITH INSTRUCTIONS, WATER ANALYSIS AND FOLLOW-UP SERVICE NECESSARY FOR SATISFACTORY RESULTS.

The Standard Boiler Warranty covers only original defects and does not cover the repairs resulting from a water condition such as corrosion or scale. It's up to you and is your sole responsibility to see that a proper Water Treatment and Maintenance Program are correctly followed at all times.

BOILER ECONOMIZERS

A boiler economizer is a device that reduces the overall fuel requirements a boiler requires which results in reduced fuel costs as well as fewer emissions – since the boiler now operates at a much higher efficiency. Boiler economizers recover the "waste heat" from the boiler’s hot stack gas from transfers this waste heat to the boiler’s feed-water. Because the boiler feed-water is now at a higher temperature that it would have been without a boiler economizer, the boiler does not need to provide as much additional heating to produce the steam requirements of a facility or process, thereby using less fuel and reducing the fuel expenses. Boiler economizers also help improve a boiler’s efficiency by extracting heat from the flue gases discharged from the final super-heater section of a radiant/reheat unit or the evaporative bank of a non-reheat boiler. Heat is transferred, again, back to the boiler feed-water, which enters at a much lower temperature than saturated steam.

Boiler Economizers are a series of horizontal tubular elements and can be characterized as bare tube and extended surface types. The bare tube includes varying sizes which can be arranged to form hairpin or multi-loop elements. Tubing forming the heating surface is generally made from low-carbon steel. Because steel is subject to corrosion in the presence of even low concentrations of oxygen, water must be practically 100 percent oxygen free. In central stations and other large plants it is common to use desecrators for oxygen removal.

WASTE HEAT RECOVERY BOILERS

Waste heat boilers may be horizontal or vertical shell boilers or water tube boilers. They would be designed to suit individual applications ranging through gases from furnaces, incinerators, gas turbines and diesel exhausts.

The prime requirement is that the waste gases must contain sufficient usable heat to produce steam or hot water at the condition required. Waste-heat boilers may be designed for either radiant or convective heat sources.

In some cases, problems may arise due to the source of waste heat, and due consideration must be taken of this, with examples being plastic content in waste being burned in incinerators, carry-over from some type of furnaces causing strongly bonded deposits and carbon from heavy oil fired engines.

Some may be dealt with by maintaining gas-exit temperatures at a predetermined level to prevent dew point being reached and others by soot blowing. Currently, there is a strong interest in small combined heat and power (CHP) stations, and these will normally incorporate a waste-heat boiler.

Many industrial processes generate large amounts of waste energy that simply pass out of plant stacks and into the atmosphere or are otherwise lost. Most industrial waste heat streams are liquid, gaseous, or a combination of the two and have temperatures from slightly above ambient to over 2000 degrees F. Stack exhaust losses are inherent in all fuel-fired processes and increase with the exhaust temperature and the amount of excess air the exhaust contains. At stack gas temperatures greater than 1000 degrees F, the heat going up the stack is likely to be the single biggest loss in the process. Above 1800 degrees F, stack losses will consume at least half of the total fuel input to the process. Yet, the energy that is recovered from waste heat streams could displace part or all of the energy input needs for a unit operation within a plant. Therefore, waste heat recovery offers a great opportunity to productively use this energy, reducing overall plant energy consumption and greenhouse gas emissions.

Waste heat recovery methods used with industrial process heating operations intercept the waste gases before they leave the process, extract some of the heat they contain, and recycle that heat back to the process.

Common methods of recovering heat include direct heat recovery to the process, regenerators, and waste heat boilers. Unfortunately, the economic benefits of waste heat recovery do not justify the cost of these systems in every application. For example, heat recovery from lower temperature waste streams (e.g., hot water or low-temperature flue gas) is thermodynamically limited. Equipment fouling, occurring during the handling of “dirty” waste streams, is another barrier to more widespread use of heat recovery systems. Innovative, affordable waste heat recovery methods that are ultra-efficient, are applicable to low-temperature streams, or are suitable for use with corrosive or “dirty” wastes could expand the number of viable applications of waste heat recovery, as well as improve the performance of existing applications.

WHAT IS WASTE HEAT RECOVERY

We provide waste heat boilers and related engineering design services. Unlike most companies, we are equipment supplier/vendor neutral. This means we help our clients select the best equipment for their specific application. This approach provides our customers with superior performance, decreased operating expenses and increased return on investment.