Sunday, December 30, 2007

What is Hydrogen ?

A Detailed Look at Hydrogen.

When most people hear the word "hydrogen" they have flashing images of an exploding blimp. Hydrogen is a fuel that requires energy to retrieve it. In other words, you have to extract hydrogen from another substance....that's the bad news. The good news is that many chemicals (including water) contain hydrogen.


Just the Facts Energy Content: 1 kg of hydrogen

Equivalent Lengths of Valves and Fittings in Pipeline Pressure Drop Calculations

One of the most basic calculations performed by any process engineer, whether in design or in the plant, is line sizing and pipeline pressure loss. Typically known are the flow rate, temperature and corresponding viscosity and specific gravity of the fluid that will flow through the pipe. These properties are entered into a computer program or spreadsheet along with some pipe physical data (

Competency in Process Control

This is a summary of a general set of recommendations aimed at helping pulp and paper mills manage process and product variability. It suggests a minimum set of standards for human awareness, knowledge and skills in the various aspects of the process control engineering discipline that is needed at each stage of a pulp and paper mill design, start-up and on-going operation/optimization.

1.0

Study of Regenerable Sorbents for CO2 Capture

Introduction

Carbon dioxide (CO2) is a greenhouse gas that is customarily released to the environment during the usage of fossil fuels, including electric power generation. With the projected increase in consumption and demand for fossil fuels, CO2 emissions will correspondingly increase in the absence of any capture/sequestration strategy. In view that CO2 is a greenhouse gas with the potential

Thursday, December 27, 2007

Safeguarding : Boiler and Heater

Sistem alarm dan safeguarding merupakan suatu instrumentasi pelindung bagi personel dan peralatan bila terjadi kegagalan operasi. Fungsinya lebih lanjut dijabarkan dalam uraian berikut :
1.Bila terjadi suatu kondisi yang khas segera menjadi perhatian operator. Kondisi tersebut misalnya tidak berfungsinya suatu peralatan, kekeliruan operasi, dan kondisi lainnya yang menimbulkan resiko bahaya.
2.

Boiler : Operating Parameter

Parameter Pengoperasian Boiler Yang Diukur & Dikendalikan

Pada fire tube boiler dan kebanyakan water tube boiler terutama unit yang dirakit di pabrik dengan pengapian fuel oil atau fuel gas yang hanya dioperasikan dengan forced draught fan, tekanan furnace selalu positif, sekitar 10 mbar, bergantung pada tekanan balik, positif atau negatif , sistem buangan dan perlengkapan heat recovery yang

Recovery of CO2 from Flue Gases: Commercial Trends

1.0 ABSTRACT
Interest in recovery of carbon dioxide (CO2) from flue gases is being propelled by multiple factors: the merchant CO2 market, renewed interest in enhanced oil recovery (EOR), and the desire to reduce greenhouse gas emissions. This paper reviews the latest operating and capital cost data for the Fluor Daniel Econamine FGSM process. It also recaps the key process design and operating

Wednesday, December 26, 2007

Understanding Gas Treating Fundamentals Part 01

The challenges of the new clean fuels regulations, refiners were particularly interested in ways to improve capacity, efficiency and reliability of amine systems and sulphur units. Much of the focus on improving the operation of the amine unit, and the associated affects on the downstream sulphur plant, has been in the area of amine solvent conversion. Some of these solvent conversions have

Tuesday, December 18, 2007

Catalyst Reduction In LTSC

Proses Reduksi Katalis LTSC ( Low Temperature Shift Converter)

As received the LTSC Catalyst are in an oxidized state and must be reduced prior to being placed in service. The method and conditions ofreduction of the catalyst are most essential to the ultimate performance ofthe catalyst and must be carefully controlled.

The catalyst is reduced passing a carrier gas such as nitrogen, natural gas

Catalyst Sulfiding In Hydrocracking Process

Proses konversi primer untuk memproduksi high quality middle distillate adalah proses hydrocracking. Proses yang ekonomis dan menguntungkan adalah maximize jumlah feed/umpan sesuai kapasitas dan menjaga unit pada service factor yang tinggi. Untuk mencapai produksi yang optimum maka hal-hal yang perlu diperhatikan antara lain : pemilihan jenis katalis , tipe feedstock/umpan , feedrate , dan

Tuesday, December 11, 2007

Energy Conservation In Distillation

The preferred method of separation in the chemical industry, distillation, is a very energy intensive process. Fine tuning your distillation columns (and in some cases, making major changes) can save your company thousands of dollars a year or more


Consider the following distillation column:
Table 1: Column Design Specifications Feed Temperature (0C) 90.0