Heat Exchanger Application Notes

Plate Heat Exchanger Gasket Material For plate (and frame) heat exchangers, the standard materials are EPDM and Nitrile rubber (NBR). EPDM is used normally for non-fatty/oily applications, and NBR for oil/fat applications. However, there are no rules without exceptions. An "oil" and fatty application may have a low fat content, making the application more suitable for EPDM instead of NBR. Other rubbers used for PHE's are Hydrogenated Nitrile Rubber (HNBR), Fluorocarbon rubber (FKM), Butyl, Chloroprene Rubber (GR), Chlorsulphonated Polyethylene (CSM), Styrene Rubber (SBR), Natural Rubber (NR) and Silicone Rubber (Q) are less common ones. Lifetime Eventually all rubber materials will degrade, loosing their properties, making them unsuitable for further use. It is all a matter of time and the original quality of the product. The lifetime of rubber products is dependent on the environment (chemical types, concentrations) and temperature. Also, temperature changes and pressure...

Plate Heat Exchanger Day-Testing 100% Dye-Testing is our standard for locating cracks, pinholes, or failures.  With proprietary red dye-penetrant saturating the plate surface, and white developer solution covering the reverse side, WCR is capable of detecting even miniscule imperfections. We test 100% of the plates that come in for service, most competitors only test a percentage.Consider that 90% of plates tested have a 10% fail rate. Basically, random checking of 10-20% cannot eliminate all bad plates, which guarantees prior to leaving our facility.  Although Dye-Testing is the most time consuming and expensive method for leak detection, we chooses the process for its reliability and effectiveness. Early discovery of plate defects alleviates cross-contamination concerns, saving costly down-time in the future. Ultraviolet Testing The ultraviolet test is used upon request, usually specialty applications where fluid mediums can only ...

Plate Heat Exchanger In 1980, West Coast Re-gasketing, the company began by providing alternative OEM specified replacement gaskets at lower prices. We recognized that OEMs were taking advantage of their position as being the sole provider of parts for your heat exchanger.The industry needed competition, and we didn't disappoint. Our re-gasketing processes are the standard in heat exchanger repair. Service is specialized to each model, gasket type, and bonding agent. We follow a rigorous process before and after the gasket is applied to the plate to assure proper adhesion, alignment, and function. Initial Plate Login and Inspection Each plate and component is logged to assure responsibility and show transparency throughout the maintenance process of your heat exchanger. Trained experts with years of experience with all heat exchanger brands and models inspect every piece of equipment prior completing any work on the unit. We will only recondition parts that require a...

As shown in the cover picture is a Tranter 06T2 before and after our cleaning procedures.Our company invented the cleaning process that's mimicked by other heat exchanger companies.We built our reputation by utilizing select cleansing methods for different applications,returning the heat exchanger specifications back to nameplate performance. Pre-Cleaning This includes a high-pressure water cleaning and brushed hand scrub if necessary to remove loose scaling and fouling. In the case of severe fouling or scaling, a high-pressure steam clean will follow. Power-Blasting For rigid scaling not dissolved in acidic or caustic solutions, powder-blasting is used along with high-pressure steam or water. Chemical Bath The company services over a half million plates every year, the majority of which are bathed in a proprietary series of chemicals depending on the heat exchanger application. A carefully selected process of altering chemicals, temperatures, and agitation assures the most ef...

Application of Plate Heat Exchanger in Ozone Oxidation Absorption and Denitrification Process Ozone denitrification refers to oxidizing the NO in the flue gas to high nitrogen oxides using the strong oxidation of ozone to achieve the purpose of emission standards. Ozone denitrification takes place at low temperatures, so ozone cooling is critical. Ozone is mainly prepared by oxygen. When ozone is produced in the ozone generator, water is used to cool the ozone. The internal circulating water in the ozone generator is cooled by a plate heat exchanger and then pumped into the ozone generator again to achieve the purpose of water recycling. Application of Plate Heat Exchanger in Sulfuric Acid Power Boiler Gas Purification Power wave purification system is mainly used for dust removal and removal of arsenic, selenium, fluoride and other impurities. The dust furnace first enters the primary power wave washing device and rapidly cools and removes impurities, and then passes through the gas ...

  Application of Plate Heat Exchanger in Blast Furnace Gas Combined Power Plant In order to reduce the emissions of coal gas emissions to achieve the purpose of energy saving and environmental protection, you can use blast furnace gas combined cycle power generation equipment for blast furnace gas recycling. The remaining waste heat steam from steam turbine power generation is cooled through the plate heat exchanger and then flow into the waste heat boiler through the feed pump, after generate steam, and then enter the steam turbine to generate electricity, to achieve the purpose of circulating water. Hofmann plate heat exchangers are not only to meet the requirements of the conditions, but also has a compact structure, small size, high heat transfer coefficient, high heat transfer characteristics, which is your best choice in this condition. Process Flow Diagram of Thermal Power Plant Firstly, send the steam generated by the boiler to the turbine, and then the turbine rotates the ...

Beer yeast yeast used to brew beer, are mostly different varieties of Saccharomyces Cerevisiae (Sac-charomyces cerevisiae). S. cerevisiae is a typical above-fermented yeast commonly used in beer production. In addition to brewing beer, alcohol and other beverages, it can also ferment bread. Baker's yeast It's divided into pressed yeast, active dry yeast and fast active dry yeast. Pressed yeast is a blocky product having a water content of 70 to 73% produced by Saccharomyces cerevisiae. Active dry yeast is a dry yeast product produced by Saccharomyces cerevisiae with a moisture content of about 8%, granular-shaped, and having a baking ability. Fast active dry yeast is a new type of fine granular (less than 1 mm diameter) product with fast and efficient fermentation. The moisture content is 4 to 6%. Yeast Production Process Diagram   Molasses treatment The original molasses is sterilized and diluted by steam high temperature (95-120 ° C), and then enters the thin molasses tempora...

Reverse flotation - cold crystallization  process This process provides significant energy savings compared to cold decomposition-flotation and cold decomposition-hot melt crystallization. The process was developed in 1979 by Israel Dead Sea Engineering. The whole process is carried out at room temperature except for the drying process. It is the best process for preparing potassium chloride by using carnallite as raw material. The processes in Jordan and Israel are mainly for screening after harvesting through the Dead Sea salt field. Coarse grain carnallite is directly subjected to cold crystallization. Fine-grained carnallite is subjected to reverse flotation, concentrated dehydration and then cold crystallization. After cold crystallization, it is sieved, concentrated and dehydrated, washed and dehydrated, and dried. It is then sieved to obtain a coarse and finely divided potassium chloride product. Reverse flotation-cold crystallization process for producing potassium chl...

For Clear Juice Heating The heat transfer performance of the heated juice by the plate heat exchanger is more than double that of the tubular type, so that the heat transfer area used can be reduced by half or more. Here, it is better to use the first effect juice, and there is a certain energy saving effect compared with heating using waste steam. In the case that the heat exchanger has good performance and is close to the evaporation can, the juice is heated by the juice vapor to make the temperature of the juice close to the juice vapor temperature, only 3 to 5°C lower, which can basically meet the needs of evaporation. Heating with juice vapor can also prevent the coking of sugar juice caused by excessive steam temperature. Some sugar factories in China use waste steam. Some factories have been seriously coked due to careless operation, and the char is difficult to remove. For Molasses Cooling The cooling of molasses before entering the storage tank is a key measure to prevent dete...

  Cold storage refrigeration introduction A ccording to the type of refrigerant , t he refrigerant circulation system can be classified into an ammonia refrigeration system and a fluorine refrigeration system . The heat exchange equipment used in the cooling room, freezing room, refrigerating room, cold storage room, ice making room and ice storage is: cooler, waste heat exchanger, shell-and-tube water heat exchanger, evaporator, condenser and so on. The temperature in the cooling compartment is generally maintained at 0-2°C. A ccording to  temperature,assembled  cold storage can be divided into: 1) L-level preservation library. Mainly used for storing fruits and vegetables, eggs, medicinal materials, fresh-keeping and drying; the temperature of the food into the warehouse is +30 °C; the temperature of the cold storage is generally +5 ~ -5°C. 2) Class D refrigerator. It is mainly used for storing meat, aquatic products and products suitable for this temperature range...

DATA CENTER COOLING SYSTEM The data center is an important infrastructure for the information industry. Nowadays the energy consumption of data center is getting higher along with the high density, high power server in use. About 40% of data center energy consumption is from the cooling system. While meeting the cooling requirements of the equipment room, to reduce the energy consumption of the cooling system, natural cooling technology is currently widely recognized as a technology with better energy saving effect in improving the energy efficiency. Categories of natural cooling Natural cooling is mainly divided into two categories: wind side natural cooling and water side natural cooling. W ind side natural cooling Direct type: direct outdoor cold air into the room, direct evaporative cooling Indirect type: indirect outdoor cold air into the room, through heat exchanger (dry/wet), heat pipe, and recycle refrigerant W ater side natural cooling Direct type:...

Process of Alumina Production The basic  principles  of the Bayer process for alumina production are as follows: (1)  Use NaOH solution to dissolve out the bauxite and the alumina in the resulting sodium aluminate solution is separated out as aluminum hydroxide under the conditions of adding seeds or stirring continuously, that is, seed precipitation process. (2)   After decomposition, the mother  liquor  can be used to dissolve out new bauxite at high temperature after evaporation and concentration, that is, dissolution process. Using these two processes alternately, you can get a batch of aluminum hydroxide by processing each batch of ore, which constitutes the so-called Bayer process cycle. The reaction equation is as follows: Al 2 O 3 （1or3）H 2 O＋2NaOH＋aq 2 NaAl(OH) 4 ＋aq Heat exchanger type Bayer process of alumina production: to use NaOH solution to dissolve out the bauxite and the alumina in the resulting sodium aluminate solution is separated out as...

Introduction of Plate Heat Exchanger in Marine Turbine In marine turbine, the heat exchange is undoubtedly a very critical factor to ensure the normal use of the engine. Because when the turbine is working, it needs to maintain a certain temperature to ensure the normal operation of the machine. There are many kinds of heat exchangers used in marine engine, in which plate heat exchanger is one of the very important one, and will be the very popular potential equipment on vessels in the future. The heat exchanger has been one of the indispensable equipments in marine engine, which can be applied in the main and auxiliary oil cooler, cylinder liner fresh water cooler, fuel heater, steam condensers, water heater and other equipments. The marine itself is very compact in structure, having more stringent restrictions on the heat exchanger space and quality. The heat transfer medium of traditional heat exchanger is always water, and the heat transfer medium of marine heat exchangers is gener...

  There are many ways to use the heat of urban sewage, but the most effective way to use is using sewage. That is, in summer, the excess heat of building is released into the city sewage through the units; in winter, the city sewage heat will be extracted through the unit to the building. The resource potential of urban sewage heat depends mainly on the temperature of the wastewater. After the treatment of urban sewage water temperature, it will have perennial changes in a certain range. The use of sewage systems to the building cooling or heating, make full use of waste water in urban sewage, reducing the consumption of high energy. Not only save energy, but also reduce the environmental pollution and water consumption. In addition, because of the high efficiency of the pollution unit work, room covers a small area, greatly reducing the operating costs and initial investment. For the use of sewage treatment plant secondary effluent or the sewage source heat pump system of recycled...

Introduction of plate heat exchanger in paper and pulp processing line Pulp cooking refers to the process of pulping that put the papermaking raw material and the cooking liquor into the digester and then heat by steam to remove the non-cellulose part of the fiber material. Papermaking boiled black liquor with a high calorific value and good flammability is an important self-produced energy of the paper industry. Hofmann's products can be used as a series of key energy-saving equipment in the black liquor enrichment process, which is an important measure to improve the energy utilization and environmental protection of paper mills. Heat exchangers are the essential parts for pulp & paper mills. With the help of heat exchangers, paper mills benefits a lot either in energy saving or environment protecting. One part of the paper machine uses a type of heat exchanger known as a waste heat recovery system, which is one of the ways that heat exchangers are able to save energy, resour...

  Process flowchart of crude oil treatment First-line oil flows from the 30th or 32th tray into the upper stage (Column-103) of the atmospheric stripping tower, then it is pumped into heat exchanger and heated up to 45℃, and after flowing into the diesel alkali-washing or water-washing ionizer (Volumn-111) combined with second-line oil for electrochemical treating, the stripping oil gas returns to the 33rd tray of the atmospheric column. Second-line oil flows into the middle stage of the stripping tower from the 18th or 20th tray of the atmospheric column and then it is cooled down to 60 ～ 70℃ by the heat exchanger and condenser. After flowing into the diesel alkali-washing or water-washing ionizer (Volumn-111) combined with first-line oil for electrochemical treating, the stripping oil gas returns to the 21st tray of the atmospheric column. Third-line oil flows into the bottom stage of the stripping tower from the 8th or 10th tray of the atmospheric column and then enters into the...

  Fruit Juice Production Process flow raw material selection→cleaning and sorting→crushing→pressing→coarse filtration→clarification→fine filtration→sugar acid adjustment→degassing→sterilization→packaging. Process Steps 1. Raw material selection:  Choose mature, fresh and intact apple. Suitable varieties are Guoguang, Hongyu and so on. 2. Cleaning and sorting:  Rinse the selected fruits in a running water tank. If there is residual pesticide in the epidermis, dilute with 0.5%-1% dilute hydrochloric acid or 0.1-0.2% detergent, then strongly rinse with water. Sort and remove rotten fruit while cleaning. 3. Crushing:  Use an apple grinder and a hammer crusher to crush the apples. The particle size should be the same and the crushing should be moderate. After crushing, it is treated with a pulper to make the particles fine and increase the juice extraction rate. 4. Pressing and coarse filtration:  Commonly squeezed and centrifuged to extract juice. The coarse fi...