Product category:
Gas monitoring and analysis
News Release from: Servomex | Subject: Servomex 2700 series
Edited by the Processingtalk Editorial
Team on 03 February 2005
Hospital waste incinerator combustion
gas analyser
A Servomex combustion gas analyser was chosen to meet the installation requirements for a clinical waste incinerator upgrade for White Rose Environmental at the Royal Oldham Hospital
White Rose Environmental operates a clinical waste incinerator based at the Royal Oldham Hospital The facility runs on a continuous basis, safely disposing of 750kg of waste per hour, 24 hours per day, seven days per week
This article was originally published on Processingtalk on 3 Jul 2008 at 8.00am (UK)
Related stories
Measurement of nitrogen in argon and helium
Exceptional precision, proven reliability and impressive connectivity makes the Kontrol Analytik k2001 on-line analyser the best choice for the measurement of trace nitrogen in argon or helium
Oxygen analyser in catalyst production SIS loop
Sud-Chemie AG is one of the world's largest manufacturers of catalysts for the chemical and petro-chemical industries: Servomex process oxygen analysers play a crucial role in the plant safety
In order to meet the terms of its licence from the Local Authority, White Rose Environmental has to ensure that the combustion gases contain a minimum of 6 per cent oxygen at all times.
To do this, the plant has recently been upgraded with a Servomex 2700 series oxygen analyser that has a probe mounted just downstream of the secondary combustion chamber.
The ceramic probe copes easily with temperatures as high as the 1100 degrees C encountered in this location.
Further reading
Petrochemical gas analysis for CEM and safety
A major Middle Eastern ethylene production (EO/EG) facility is using Servomex gas analysers for CEM (continuous emissions monitoring) and safety applications
Six combustion gas analysers help BP Chemicals
Servomex oxygen and combustibles analysers supplied for a refurbishment project at the BP Chemicals acetic acid production plant in Hull have contributed to a significantly reduced fuel consumption
MCERTS approval for N2O measurements
MCERTS approval makes Servomex infra-red gas analysers attractive to companies seeking to reduce Nitrous Oxide emissions and claim credits under the Kyoto protocol
Moreover, the probe does not need to be regularly removed for cleaning, despite it sampling continuously in the harshest of operating conditions.
On the system originally installed on the plant, the zirconia cell had to be removed and cleaned as part of the twice-yearly servicing; but the main problem was not the servicing frequency, rather the fact that the probe was invariably problematic after it had been reinstalled, leading to costly downtime.
With the Servomex 2700, however, the ceramic probe is self-cleaning, so there is no need for it to be removed and therefore no follow-on reliability issues.
White Rose Environmental wanted to upgrade to the latest oxygen analysis technology so looked at several potential suppliers.
The Oldham plant had heard good reports about the Servomex 2700 analyser from another plant in the group, so had invited Servomex to tender for the work.
Technically the Servomex offering was as good as all the alternatives, if not better in many respects, but the main factor behind White Rose Environmental choosing the Servomex equipment related to the ease of installation.
Trevor Cadman, Plant Manager, explains: "The physical structure of the plant is such that the probe had to be installed at an angle of 30 degrees.
I would have preferred to fit it vertically, but that would not have been possible without carrying out major restructuring of the plant, which was out of the question.
Servomex was the only supplier whose probe could be installed at any angle, so the 2700 analyser offered a clear advantage over the alternatives." The combustion gas analyser is a key element of the process control feedback loop, helping to keep the combustion gas oxygen at the 9 per cent set-point.
If the level falls, a secondary fan is used to increase the airflow; if the level rises, the speed of the secondary fan is reduced.
Because the composition of the clinical waste feedstock continually varies, there is a need for a fast-responding oxygen analyser; instrumentation critical to the process also has to be highly reliable in order to avoid downtime.
The Servomex 2700 meets both of these requirements and has the versatility that enables it to be easily retrofitted to existing plants - even where space is severely restricted.
So impressed is White Rose Environmental with the Servomex 2700 that additional units have already been ordered for plants at Pontefract, Bolton and two other sites.
Trevor Cadman comments: "We are very pleased with the performance of the 2700 oxygen analyser, as well as the support we have received from Servomex.
The analyser has proved itself to be so reliable that we do not anticipate needing anything other than routine servicing.".
• Servomex: contact details and other news
• Email this article to a colleague
• Register for the free Processingtalk email newsletter
• Processingtalk Home Page
