TUBBY SCRAP METAL SYDNEY RECYCLER Scrap Metal Recycling, Scrap Steel Recycling, Scrap Metal Prices, Scrap Copper Recycling Prices, Scrap Brass Prices, Scrap Aluminium Prices, Scrap Steel

Catalytic converter recycling NSW Cash for Catalytic converters. We buy scrap catalytic converters Australia wide. We have organized local collection systems in the state NSW. We look forward to long term partnerships from wreckers and big collectors from all over Australia.

Our pricing is consistent and we offer top dollars for scrap catalytic converters based on a fair and simple grading system. The price calculation is based on international precious metal market prices and the precious metal content of the Australian converters.

Our guarantee to you is to deliver the best price for your converter scrap. No supplier is too small or too big for us to handle

Benefits of our collection service include:
- Unrivalled customer return for your converters
- Regular fortnightly collection to avoid waste build-up
- Low clearance transport available
- Professional & Reliable service
- Full compliance with Environmental plus Health & Safety legislation

Nobody can beat our prices! Others may quote a higher price, but we guarantee the most honest grading possible. With our online Converter Guide you can identify your own converters instead of relying on dishonest converter buyers.

CUTTING SERVICE
We agree on a set price and come to you and cut your converters from the cars. No job to big. We look forward to meeting you. I do the cutting personally no one will come to represent my company but myself.

GRADING CONVERTERS WITH PRECIOUS METALS
A catalytic converter is graded as a full is full and a half is half. We do not play games, we want your business for many years to come.

PICKUP SERVICE
We travel several routes in all directions from NSW, check to see if we run your area. We can possibly make arrangement to come to you.

CUSTOMER SERVICE
We service scrap yards, tow shops, auto repair shops, muffler shops, body shops, auto salvage yards among others. We still cut one converter from a junk car in the back yard to 1000 in a auto salvage yard. We want your catalytic converters for precious metal refining. Call today for any questions you may have.

No two catalytic converters are the same. In fact the quantity of recoverable precious metal in catalytic converters varies by type so much that some are worth much more than others. By categorizing catalytic converters using our grading system, you can expect a better return for your high-value units.

We are dedicated to get you THE MOST for your scrap catalytic converters!

We turn your scrap catalytic converter into cash, quickly and simply.

How Catalytic Converters Die

Catalytic Converters do not fail on their own. The most typical scenario is that an over-rich fuel mixture--caused by a defective fuel injection or carburetor setup--allows un-burnt fuel to find its way into the converter. Therefore, due to the heat generated in the catalysation process, the fuel burns inside the converter. The substrate in the converter melts, then breaks up, resulting in exhaust system clogging and rattles.

	Large Exotic
	- Biscuit weight must be approximately 5 lbs
	Small Exotic
	- Biscuit weight must be approximately 4 lbs
	Large Import
	- Biscuit weight must be approximately 3.75 lbs
	Small Import
	- Biscuit weight must be approximately 2.2 lbs
	Center Hole Honda
	- Biscuit weight must be approximately 2.7 lbs

	Large Exotic
	- Biscuit weight must be approximately 5 lbs
We are not just collectors! We are also cutting and processing,

	Small Exotic
	- Biscuit weight must be approximately 4.0 lbs
We are not just collectors! We are also cutting and processing,

	Large Import
	- Biscuit weight must be approximately 3.75 lbs
We are not just collectors! We are also cutting and processing,

	Small Import
	- Biscuit weight must be approximately 2.2 lbs
We are not just collectors! We are also cutting and processing,

	Center Hole Honda
	- Biscuit weight must be approximately 2.7 lbs
We are not just collectors! We are also cutting and processing,

	Import Pre
	- Biscuit weight must be approximately 1.2 lbs
We are not just collectors! We are also cutting and processing,

	Large GM
	- Biscuit weight must be approximately X lbs
We are not just collectors! We are also cutting and processing,

	Small GM / 4 Hole
	- Biscuit weight must be approximately X lbs
We are not just collectors! We are also cutting and processing,

	Jeep
	- Biscuit weight must be approximately 5.25 lbs
We are not just collectors! We are also cutting and processing,

Large Chrysler

- Biscuit weight must be approximately 4 lbs

Large Ford

- Biscuit weight must be approximately 2.8 lbs

	Small Honeycomb
	- Biscuit weight must be approximately 2.1 lbs
We are not just collectors! We are also cutting and processing,

	2 Pipe
	- Biscuit weight must be approximately X lbs

	Domestic Pre
	- Biscuit weight must be approximately 1.1 lbs
We are not just collectors! We are also cutting and processing,

Taurus

Vehicle Types:

Dimensions:

Cigar

Vehicle Types:

Dimensions:

Jumbo Bead

Vehicle Types:

Dimensions

There are millions of cars on the road in the Australia, and each one is potentially a source of air pollution. Especially in large cities, the amount of pollution that all the cars produce together can create big problems.

To solve those problems, cities, states and the federal government create clean-air laws, and many laws have been enacted that restrict the amount of pollution that cars can produce. To keep up with these laws, automakers have made many refinements to car engines and fuel systems. To help reduce the emissions further, they have developed an interesting device called a catalytic converter, which treats the exhaust before it leaves the car and removes a lot of the pollution.

Location of catalytic converter in car.

In this article, you will learn which pollutants are produced by an engine and why, and how a catalytic converter deals with each of these pollutants. Catalytic converters are amazingly simple devices, so it is incredible to see how big an impact they have!

Pollutants Produced by a Car Engine

In order to reduce emissions, modern car engines carefully control the amount of fuel they burn. They try to keep the air-to-fuel ratio very close to the stoichiometric point, which is the calculated ideal ratio of air to fuel. Theoretically, at this ratio, all of the fuel will be burned using all of the oxygen in the air. For Petrol, the stoichiometric ratio is about 14.7:1, meaning that for each kg of Petrol, 14.7 kgs of air will be burned. The fuel mixture actually varies from the ideal ratio quite a bit during driving. Sometimes the mixture can be lean (an air-to-fuel ratio higher than 14.7), and other times the mixture can be rich (an air-to-fuel ratio lower than 14.7). The main emissions of a car engine are:

Nitrogen gas (N2) - Air is 78-percent nitrogen gas, and most of this passes right through the car engine.
Carbon dioxide (CO2) - This is one product of combustion. The carbon in the fuel bonds with the oxygen in the air.
Water vapor (H2O) - This is another product of combustion. The hydrogen in the fuel bonds with the oxygen in the air.

These emissions are mostly benign (although carbon dioxide emissions are believed to contribute to global warming). But because the combustion process is never perfect, some smaller amounts of more harmful emissions are also produced in car engines:

Carbon monoxide (CO) - a poisonous gas that is colorless and odorless
Hydrocarbons or volatile organic compounds (VOCs) - produced mostly from unburned fuel that evaporates Sunlight breaks these down to form oxidants, which react with oxides of nitrogen to cause ground level ozone (O3), a major component of smog.
Nitrogen oxides (NO and NO2, together called NOx) - contributes to smog and acid rain, and also causes irritation to human mucus membranes

These are the three main regulated emissions, and also the ones that catalytic converters are designed to reduce.

How Catalytic Converters Reduce Pollution

Most modern cars are equipped with three-way catalytic converters. "Three-way" refers to the three regulated emissions it helps to reduce -- carbon monoxide, VOCs and NOx molecules. The converter uses two different types of catalysts, a reduction catalyst and an oxidization catalyst. Both types consist of a ceramic structure coated with a metal catalyst, usually platinum, rhodium and/or palladium. The idea is to create a structure that exposes the maximum surface area of catalyst to the exhaust stream, while also minimizing the amount of catalyst required (they are very expensive).

catalytic-converter-side

A three-way catalytic converter: Note the two separate catalysts

There are two main types of structures used in catalytic converters -- honeycomb and ceramic beads. Most cars today use a honeycomb structure.

catalytic-converter-catalyst
Ceramic honeycomb catalyst structure

The Reduction Catalyst

The reduction catalyst is the first stage of the catalytic converter. It uses platinum and rhodium to help reduce the NOx emissions. When an NO or NO2 molecule contacts the catalyst, the catalyst rips the nitrogen atom out of the molecule and holds on to it, freeing the oxygen in the form of O2. The nitrogen atoms bond with other nitrogen atoms that are also stuck to the catalyst, forming N2.

For example:

2NO => N2 + O2 or 2NO2 => N2 + 2O2

The Oxidization Catalyst

The oxidation catalyst is the second stage of the catalytic converter. It reduces the unburned hydrocarbons and carbon monoxide by burning (oxidizing) them over a platinum and palladium catalyst. This catalyst aids the reaction of the CO and hydrocarbons with the remaining oxygen in the exhaust gas.

For example:

2CO + O2 => 2CO2

But where did this oxygen come from?

The Control System

The third stage is a control system that monitors the exhaust stream, and uses this information to control the fuel injection system. There is an oxygen sensor mounted upstream of the catalytic converter, meaning it is closer to the engine than the converter is. This sensor tells the engine computer how much oxygen is in the exhaust. The engine computer can increase or decrease the amount of oxygen in the exhaust by adjusting the air-to-fuel ratio. This control scheme allows the engine computer to make sure that the engine is running at close to the stoichiometric point, and also to make sure that there is enough oxygen in the exhaust to allow the oxidization catalyst to burn the unburned hydrocarbons and CO.

Other Ways to Reduce Pollution

The catalytic converter does a great job at reducing the pollution, but it can still be improved substantially. One of its biggest shortcomings is that it only works at a fairly high temperature. When you start your car cold, the catalytic converter does almost nothing to reduce the pollution in your exhaust.

One simple solution to this problem is to move the catalytic converter closer to the engine. This means that hotter exhaust gases reach the converter and it heats up faster, but this may also reduce the life of the converter by exposing it to extremely high temperatures. Most carmakers position the converter under the front passenger seat, far enough from the engine to keep the temperature down to levels that will not harm it.

Preheating the catalytic converter is a good way to reduce emissions. The easiest way to preheat the converter is to use electric resistance heaters. Unfortunately, the 12-volt electrical systems on most cars don't provide enough energy or power to heat the catalytic converter fast enough. Most people would not wait several minutes for the catalytic converter to heat up before starting their car. Hybrid cars that have big, high-voltage battery packs can provide enough power to heat up the catalytic converter very quickly.