POME Zero Discharge

Coming soon
1. Conceptual  idea
2. Parameter monitoring
3. Fine tuning
4. How to achieve
5. Problems & issues
6. Improvements
7. Equipments
8. Problem solving

Boiler moving floor

Continues disludging

Reduce black smoke at boiler chimneys

Would like to share a story of a steam boiler at my work place with the details as below.

Capacity : 27mt/hr
ASWP      : 24 bar
Working pressure : 21 bar
Fuel         : palm fibre and shell.

Issue of concern : black smoke exceed 15minutes per 24 hrs.

Root  cause :
A. high boiler steam flow during processing, (25-27mt/hr)

B. Fuel feed into boiler furnace only drop at front side of furnace and require boilerman to push it further at this moment black smoke will occur at boiler chimney.

Corrective action
1. High boiler steam flow.
A. Fine tune on sterilizer program by reducing opening of make up valve.
B. Close sterilizer inlet valve during 1st and 2nd peak blow off.
C. Repair leak steam traps at kernel silos, steam main line and engine room.
D. Replace BPV surplus valve metal seat to reduce steam wastage.

Result.
Steam flow able to reduce to 22mt/hr

2. Fuel distributions
A. Dismantle fuel feed duckting and mudalating damper duckting, check on Mudalating damper impeller and ensure all are parallel.
B. Repair fuel feel duckting m.s damper. Reduce gap between and smothen the adjustment mechanism.
C. Clear all solidify fuel stuck at cast iron chute.

Result
A. Fuels able to be distributed evenly in furnace.

Final result.
A. Black smoke emission  is averaging 5-6 minutes / 24 hours.

Condensate as dilution

Condensate generation are normally 15-17% of FFB. So for 60mt/hr oil mill condensation generated every hour are about 19.5mt.

Formula to calculate % of dilution are as followings.
A) % dilution = hot water / diluted crude oil.
B) % dilution = hot water / crude oil.

So for 60mt/hr oil mill with 25% of dilution require 10.5mt/hr hot water for dilution. If we are using condensate as dilution we should able to reduce water consumption by 10.5 mt / hr.

1. Condensate from sterilizer will be pump to vibrating screen or stationery screen and been stored at a holding tank.

2. From holding tank. Condensate will be pumped to dilution tank and heeted to 90d c. Overflow of dilution tank will return back to sludge tank.

3. A float valve shall be installet at dilution tank as backup supply in event of less condensate supply.

4. In Evans condensate supply are not sufficient, float  valve will allow frash water as make up.

With this, we will able to reduce water usage by 9.0 metre cube / hr.

In terms of oil recovers efficiency also shown improvement due to reduce of mass at downstream.

EFB Pellet

EFB Pellet

Renewable and sustainable energy is a hot discussion topic through out many countries in the world.  DST Technology has heavily involved in many biomass sustainable energy sectors such as providing EFB (Empty Fruit Bunch) Fibre, wood chip and palm kernel shell to the market.  Now we introduce EFB pelletto the biomass fuel industry.  With EFB pellet, we have wider up our products list for our customer selection.

EFB Pellet

DST has dedicated biomass pellet mill strategically locate in between several palm oil mill. We do have a strong relation and contract with the palm oil mill for supplying us empty fruit bunch.  Our empty fruit bunch resource has become the confident for us to supply EFB pellet to export market.

EFB Pellet Application

EFB pellet is a palletize material manufacturer from EFB (Empty Fruit Bunch) from palm oil mill.  EFB Fibre is a raw type of biomass material with many restrictions especially for export market.  EFB Fibre goes through a palletize process becomes EFB pellet, and this palletize biomass fuel is easy transportation, handling, application and expectable result.  EFB pellet has become an important biomass fuel for the industry.

EFB Pellet Specification

Calorific value = 4,200kcal/kg
Moisture level < 15%
Ash content < 10%
Pellet diameter = 5mm
Pellet Length = 20mm

EFB Pellet Packaging

The EFB pellet is packed under jumbo bag with 750kg per bag.

Bunch Ash

Source of Bunch Ash

Bunch ash is the ash that derives from burning left over from bunch after burning process.  Instead of bunch ash, there are people classified as wood ash, which originate form the source of wood.
The empty fruit bunch (EFB) has been widely used as a biomass substance in biomass boiler for steam generating, and the left over after incinerating chamber could be known as bunch ash.  The bunch ash is light and comes in grey colour.  Bunch ash is well known for it high Potassium contain.

Form of Bunch Ash

The bunch ash comes in powder form with grey to dark in colour.  Low moisture level.

Ingredient of Organic fertilizer

Potassium is the main ingredient for organic fertilizer.  Apart the potassium, fertilizer manufacturer will add in other source to formulate for appropriate NPK ratio,
Bunch ash is widely known as the raw material for organic fertilizer.  Perhaps, bunch ash also one of the original source for Potassium (K₂O) used in organic fertilizer.

Bunch Ash – General Specification

K₂O level = 30%
Moisture content = 8%
Form = Powder form
Packaging = 900kg/jumbo bag, or 50kg/woven bag
Colour = grey to dark grey
We have many years experience in organic fertilizer industry and looking forward to work with organic fertilizer manufacturer for maximizing the bunch ash supply and application.