1Key Takeaways
The sample is heated in an aluminium retort to a temperatur of 520 鳦. The products of decomposition pass into a water-cooled receiver; the tar and water are condensed while gaseous products pass to atmosphere. The coke residue and the receiver and its contents are weighed. The mass of tar is obtained by difference to t…
2Scope / Description
The sample is heated in an aluminium retort to a temperatur of 520 鳦. The products of decomposition pass into a water-cooled receiver; the tar and water are condensed while gaseous products pass to atmosphere. The coke residue and the receiver and its contents are weighed. The mass of tar is obtained by difference to the mass of water determined by entrainment with toluene or xylene. A separate determination of moisture in the coal, also by entrainment with tulene or xylen, is amde so that the decomposition water can be calculated. The peecentage of gas is obtained by subtracting from 100 the sum of the percentages of coke residue, of tar and decomposition water.
6Frequently Asked Questions
What is ISO 647:1974?
ISO 647:1974 — Brown coals and lignites; Determination of the yields of tar, water, gas and coke residue by low temperature distillation is an international standard developed by International Organization for Standardization (ISO). The sample is heated in an aluminium retort to a temperatur of 520 鳦. The products of decomposition pass into a water-cooled receiver; the tar and water are condensed while gaseous products pass to atmosphere. The coke residue and the receiver and...
What does ISO 647:1974 cover?
This standard covers: The sample is heated in an aluminium retort to a temperatur of 520 鳦. The products of decomposition pass into a water-cooled receiver; the tar and water are condensed while gaseous products pass to atmosphere. The coke residue and the receiver and its contents are weighed. The mass of tar is...
Who should use this standard?
This standard is intended for organizations, professionals, and stakeholders involved in various industries and sectors. It is applicable to manufacturers, service providers, regulatory bodies, and certification organizations.
What is the latest version of ISO 647:1974?
The current published version is ISO 647:1974, published on 1974-11. Always check for amendments or pending revisions.
How do I purchase ISO 647:1974?
You can purchase ISO 647:1974 by visiting our contact page. Click "Get This Standard" to view pricing and send a purchase inquiry. Our team will respond with payment and delivery details.