How is ammonia produced by Haber Process?

 Do you think Ammonia is part of Energy Transition, just like hydrogen? I think the answer is yes. Do you ever wonder how ammonia is produced? The most widely used technology by the industry is called Haber Process.

4 Mistakes to Avoid in Your Hydrogen Liquefaction Process Design

Hydrogen is going to be part of energy transition. Hydrogen liquefaction is going to be part of hydrogen value chain.

Are you ready to liquefy hydrogen? Before you start, you might want to avoid four (4) mistakes in your process design.

One Minute Process Engineering: Generate an Air Cooler Datasheet from Hysys, ProMax and Unisim

 Process engineers use different simulation software, such as Hysys, ProMax and Unisim. We also spend lots of time on extracting data from the simulation software to create process data sheets. Do you ever dream to create process datasheets from various simulation software in just one minute?

Hydrogen Liquefier with Helium Brayton Cycle and Liquid Nitrogen

Do you ever wonder how hydrogen can be liquefied? Hydrogen is the first element in the Periodic Table, but it has the second lowest boiling point temperature of -423 F. Do you ever wonder who has the lowest boiling point temperature? The answer is Helium, the 2nd element in the Periodic Table. How about the third and the fourth lowest boiling point? They are Neon and Nitrogen. Because of the low boiling temperature, so Helium, Neon and Nitrogen are commonly used to liquefy hydrogen. In today's video, a helium Brayton cycle and liquid nitrogen are used to liquefy hydrogen.

Use Steam Methane Reformer SMR to Produce Hydrogen

Introduction

Hydrogen is becoming a hotter and hotter topic. Do you know how hydrogen is produced? One popular method to produce hydrogen is through a steam methane reforming process.

Overview

Generally speaking, there are 6 process modules to produce hydrogen. First methane and steam react in the heating & reaction module, then it is cooled to ambient temperature before sending to a Pressure Swing Adsorption or PSA module to get the pure hydrogen. The final step is to compress hydrogen to the required pressure. Along with the 4 main process modules, we also need to have a steam module to produce steam and a flue gas module to provide all the heat needed in the process.

Methane feed is first split to 2 parts. The major part will be converted to hydrogen and the other part will be burned to provide the heat required. I will first go through the 4 main process modules and then come back to the 2 utility modules.

Guofu is presenting a poster in Aspentech Optimize 2019 conference

Guofu is presenting a poster in Aspentech Optimize 2019 conference in Houston in May 2019. Come to the poster to check it out how Guofu utilizes Aspentech Optimizer to optimize capital cost, operational cost and revenue from products sold, for a RSV gas processing cryo plant.

What does a true standard condensate stabilizer look like?

Do you really have a true standard plant?

Do you have a standard plant? Many of us probably say yes.

Do you really have a standard plant? Only some of us might say yes with hesitation.

Do you really have a true standard plant? Only very few of us will say yes with confidence.

The reason why you don't have a standard plant

The reason why only very few of us have a true standard plant is that making plants standard is really, really, really hard. Many of us fail to answer the ultimate question: what's the output with the customer's particular input if they decide to choose your standard plant? We know the performance and the utility requirement at the design conditions of the standard plant, but how about the off-design conditions with a given set of existing equipment? In this video, you will learn what a true standard condensate stabilizer looks like.

Introduction to double-column Nitrogen Rejection Unit NRU

Introduction

It is estimated that 25% of the United States natural gas reserves contain unacceptably large quantities of nitrogen. Nitrogen is inert and lowers the BTU value of natural gas. It also takes up capacity in pipelines that could be used for valuable methane. Thus, nitrogen needs to be rejected from the gas through a Nitrogen Rejection Unit NRU. Typically, the feed to nitrogen rejection unit comes from the top of the DeMethanizer column of a cryogenic NGL recovery unit.

Geothermal Power Plants Modeling 101: Rigorous Rating

Geothermal Power Plants Modeling 101: Rigorous Rating

     This blog is the first article in a series of Geothermal Power Plants Modeling. This 101 shows how a geothermal power plant is rigorously rated, thus the performance of the power plant can be guaranteed with great confidence.

Unveil the Mystery of Air Products APCI C3MR LNG Liquefaciton Process in HYSYS

You are an LNG professional. You understand Air Product C3MR is the most popular LNG liquefaction process. But do you really know all the ins and outs of the C3MR process? All the mystery of the APCI C3MR LNG process will be unveiled in this video.

Do You Really Know How Your PRICO LNG Plant Performs at Off-Design Conditions?

You designed your PRICO LNG plant, you know what it is supposed to do at the design condition. Do you really know how it performs at off design conditions?

Two rate based process simulation models are developed by Guofu Chen. One is a fast rating method utilizing UA, while the other method embeds Aspen EDR to rigorously model the performance of the plate-fin heat exchangers.

Unveil the Top Secret of Mixed Refrigerant Compositions used in the LNG Liquefaction Process

What's the top secret you think when it comes to LNG liquefaction process? There are different technologies, such as C3MR by Air Products, Cascade process, Single Mixed Refrigerant SMR by Black Veatch and Dual Mixed Refrigerant DMR by Shell. For each process, there are secrets for the optimum refrigerant flow, pressure and temperature. However, the top secret among all the secrets is the mixed refrigerant compositions. In general, process engineers spend days and nights to optimize the compositions. Yet, the solution might not be found. In this video, the top secret is unveiled to teach you how you can optimize the mixed refrigerant compositions in a matter of minutes.

Simulate Cryogenic Air Separation Unit in HYSYS

Air was considered not liquefiable a century ago. But nowadays, with the advanced technologies, not only air is liquefied, but it is also separated into nitrogen and oxygen under a cryogenic temperature of -320 F. In this video, you will be able to learn the process to separate oxygen and nitrogen from air with cryogenic method.

Model Liquefied Nitrogen Gas in HYSYS

You probably heard LNG, Liquefied Natural Gas. Did you ever hear Liquefied Nitrogen Gas? Methane can be liquefied at a temperature of -259 F, while to liquefy nitrogen, the temperature is even lower down to -320 F. In this video, a simulation is modeled in HYSYS to demonstrate how nitrogen gas is turned into nitrogen liquid.

One Minute Process Engineering: Generate Expander Datasheets from HYSYS

It is so much fun for being a process engineer to do all kinds of magic calculation in AspenTech HYSYS. But when it comes to generate process data sheet specification, it is so so frustrating. If you have the same experience as I do, you are in the right place.

One Minute Process Engineering: Generate TEMA data sheets from HYSYS

As a process engineer, you've finished the most challenging process calculation in Aspen HYSYS, and now it's time to generate process data sheet specification. Are you excited about copying data one by one from HYSYS to Excel? If not, then you are in the right place.

Geothermal Power Plants Modeling 201: Fast Rating and Optimization

Thanks for continuing reading Geothermal Power Plants Modeling 201: fast rating and optimization. In 101, a very rigorous approach is introduced to give users great confidence to guarantee output with real geometries of heat exchangers and so on. However, the disadvantage is the slow calculation speed. With slow calculation speed, it is almost impossible to optimize the whole plants. In this blog 201, a simplified yet accurate approach is used to optimize the whole power plants by finding the optimum process parameters.

Geothermal Power Plants Modeling 301: Dynamics Simulation

Welcome to Geothermal Power Plants Modeling 301: Dynamics Simulation. If you read my blog 101 which is about rigorous modeling and my blog 201 which is about fast rating and optimization, you notice both 101 and 201 are about steady state simulation. In 301, we are going to explore the dynamics simulation which can simulate the power plant performance real time with variable changes, such as dry bulb. In this blog, you will be able to see the dry bulb changes versus time and the power plant output versus time.

Program a Cooling Water Tower extension in Aspen HYSYS

This cooling tower extension for Aspentech HYSYS is able to predict the cooling water tower performance given the design conditions and the new operating conditions. Given the flow, inlet temperature to the tower and wet bulb, the HYSYS extension will predict the cooling tower outlet temperature.

Optimize Design and Operation of Renewable Energy Cycle through Aspen HYSYS Integrated with Aspen EDR Software

ABSTRACT

In this R&D note, how to utilize ASPEN HYSYS optimizer and ASPEN EDR to improve power output and to reduce the cost in the renewable engineering field is described. First, the process model in HYSYS is set up based on the best engineering practice. Second, HYSYS optimizer is utilized to maximize the power output, subject to constraints such as shell and tube exchanger pinch. Third, HYSYS and EDR are used to size the most cost effective exchangers based on cost and performance evaluation. Finally HYSYS integrated with EDR is utilized to rate the whole cycle, mimic the real plant operation and do what-if studies.