Methods and methods for cleaning process equipment. Cleaning of industrial equipment. Typical contaminants that have to be removed during technological cleaning

Preventive cleaning of industrial equipment from various kinds of contaminants

The fulfillment of the required productivity, trouble-free performance and, as a result, high income of the enterprise directly depend on the state of the technological equipment, which in turn depends on its proper operation and timely implementation of preventive maintenance.

One of the main points of these preventive works is the cleaning of industrial equipment, which can be carried out in several ways.

Let's take a closer look at each of them.

sandblasting method

This method is based on the use of a special apparatus that, under high pressure, delivers an abrasive, that is, sand, to the surface. Due to such an intense impact, pollution is easily removed from the units.

Most effective for removing old paint and rust.

The disadvantage of the sandblasting method is that it does not make it possible to clean hard-to-reach areas, and also generates a large amount of dust and additional contaminants.

Hydrodynamic method

Such cleaning of industrial equipment is partially similar to sandblasting, however, here the high-pressure apparatus does not supply sand, but a jet of water. Under its influence, pollution is washed away.

The main disadvantage of hydrodynamic cleaning is that with ordinary water, even under high pressure, it is difficult to remove oil and fuel oil stains, which have a very viscous structure. in extreme cases, you can remove only their surface part.

blasting

This method, one might say, combines the two previous ones. Special installations for blasting supply water to the surface with the addition of fine abrasive under high pressure.

This is a more gentle method, since the surface practically does not suffer during such processing. Cleaning turns out to be quite high-quality, since pollution of almost any origin is removed.

All of the above methods have common disadvantages, including high energy consumption during operation, the need for special equipment and the inability to clean hard-to-reach assemblies, as well as small parts.

Chemical method

Cleaning of industrial equipment using special chemicals is becoming increasingly popular today.

First of all, it can be carried out independently, by the efforts of the employees of the enterprise, without the involvement of specialists.

Secondly, contaminants are removed more efficiently and without damaging the surface.

The main thing here is to choose a quality product from a reliable manufacturer.

The advantages of modern cleaners are:

The content in the composition of non-aggressive substances that do not violate the surface of the aggregates.
Possibility of processing without a complete stop of production.
Easy to clean and fast results.
Efficient removal of contaminants of any origin.
Increasing the productivity of production after cleaning.

DOCKER MAZBIT TURBO is a concentrated industrial cleaner for all types of heavy dirt. Designed for effective quick cleaning of any surfaces: parts, assemblies, mechanisms, plastics, general building materials (concrete, stone, tile, asphalt) from various oil-fat and oil-based contaminants, fuels and lubricants, lubricants, graphite, fuel oil, oil.
Has no smell. Acid free.

Equipment used in various industries, as well as special equipment, need regular cleaning. This is necessary for the continuity of the technological process, ensuring the necessary performance and extending the life of the equipment.

Until recently, this problem was solved in several ways, depending on the specifics of production. For this, strong chemical solvents, sandblasting and hydrotreating were used.

Disadvantages of chemical treatment technologies

toxicity of chemicals;
the toxicity of sand containing silicon dioxide and has long been banned for use in most developed countries;
the need to collect and dispose of consumables after completion of work; the need to suspend production for the period of technological maintenance (cleaning);
the need to protect certain parts of the equipment from the ingress of aggressive substances, sand or water;
large expenditure of time and labor resources;
high cost of work performed.

Industrial equipment cleaning with soda blasting technology

The advanced technology of soda blasting solves the above problems with ease. It not only saves money and time for clients, but also provides an order of magnitude higher quality of work.

Soft blasting technology has become an ideal way to perform such types of work:

Removing the old layer of paint and dirt

Removal of old paint from equipment using a special abrasive Armex is carried out quickly, efficiently and at minimal cost. The basis of abrasive particles is sodium bicarbonate - simple soda, which is mixed with chalk. These natural, environmentally friendly components guarantee complete safety of work.

The composition of Armex is sprayed with special compact devices onto the surface to be cleaned. During the collision of the granules with the surface, they are destroyed with the simultaneous destruction of the surface layer of pollution.

Since the density of the abrasive is low, it removes only those substances that have the same or lower density, without damaging the surface being cleaned.

Blasting industrial equipment

Soft blasting has a number of advantages when cleaning equipment:

no need to use harmful chemicals;
cleaning is easy to carry out;
the remains of abrasive granules are easily dissolved in water, which makes it possible to simply wash them off without additional cleaning and disposal of materials after cleaning;
no additional preparatory work is required, for example, protection of equipment from abrasive ingress into mechanisms;
you can clean chrome, nickel, galvanized and aluminum surfaces without fear of damaging them;
allows cleaning engines and other parts of mechanisms without dismantling and disassembly;
consumable residues do not accumulate inside the mechanisms, as they are easily removed with water;
in case of unwanted dust formation, the abrasive can be used together with water;
significantly reduces the time spent on cleaning and its cost.

Armex blasting technology

Due to its versatility and simplicity, the technology can be applied to any modern enterprise, ensuring the excellent condition of the equipment, saving time and money.

1. The operation of production equipment, its load and the main parameters of the process must comply with the established technological regime and its passport data.

2. In case of violation of certain standards of pressure, temperature, liquid level and other parameters, the reasons must be clarified and measures taken to exclude the possibility of such violations.

3. The wall thickness of apparatuses and pipelines containing explosive and flammable substances must be periodically checked with a corresponding entry in a special log.

The frequency, methods and control points should be determined by the instruction approved by the employer.

4. Equipment, storage facilities and pipelines, before being put into operation after installation or repair, must be tested for tightness and strength with compressed air, inert gas or water under pressure specified in the technical specifications or working drawings. Tests for the strength and density of devices, storages and pipelines must be carried out in accordance with the requirements of the current regulatory legal acts.

The results of tests of devices and pipelines must be documented in an act.

5. Before commissioning, all safety valves must be adjusted on a special stand to the set pressure, sealed and checked for tightness of the valve and detachable connections. All this must be formalized by the relevant act, which is a mandatory annex to the act of putting the valves into operation.

6. Revision of safety valves must be made during each shutdown of the unit for inspection, cleaning or repair, but at least once a year, which must be certified in the unit log.

7. Locking devices and fittings for devices and pipelines must be tested for tightness before installation and after each repair. These tests must be carried out upon completion of lapping and bench-machining. Tests must be carried out in accordance with applicable standards and specifications.

8. Apparatus, vessels and pipelines subject to disclosure for internal inspection, cleaning or repair must be emptied of products, disconnected from the operating equipment with locking devices and plugs. In addition, depending on the products contained in them and the design, they must be steamed with live steam or washed with water and blown with clean air.

Dismantling of flange connections on the internal gas pipelines of the heating gas of coke oven batteries (replacement of diaphragms, valves, sections of gas pipelines, installation of valves, repair of gas heaters) must be carried out on a disconnected and plugged section of the gas pipeline after the installation of shut-off devices on the external section of the gas pipeline, with the exception of works in compliance with the technology of heating coke ovens. furnaces (cleaning and lubrication of tilt and stop valves "for gas", replacement of adjusting cylinders and washers, flexible and rubber hoses, degraphing devices and their parts, tilt valves, gas-air valves, inlet pipes, cornices).

During the emptying of apparatuses and pipelines from the remnants of chemical products in the form of liquid, pulp, etc., special safety measures must be observed.

9. Before opening coke oven gas apparatuses and gas pipelines, it is necessary to steam them, and after opening, moisturizing and removing pyrophoric (sulphurous) iron.

If the device is stopped for repair, that part of it to be repaired must be grounded to the plugs. In this case, the grounding conductor must be welded to the apparatus by gas welding after the preparatory measures necessary and sufficient for hot work.

10. Disconnection of devices, vessels and pipelines subject to internal inspection, cleaning or repair must be carried out by disconnecting them from existing pipelines and devices, ensuring an air gap of at least 200 mm between the ends of the disconnected pipelines.

If, due to design features, disconnection is not possible, the installation of plugs in each individual case must be carried out with the permission of the employer. It is forbidden to install interbolt plugs in these cases.

11. All non-working chemical devices must be disconnected from working devices with locking devices and metal plugs; purge plug fittings must remain open.

All measures must be taken to prevent their self-ignition and explosions.

12. Metal plugs used to disconnect devices, gas pipelines and product pipelines must be manufactured in accordance with standards and specifications. Plugs must be installed after the locking device and have shanks protruding beyond the flanges.

The installation and removal of the plugs must be noted in the workshop log signed by the employee who performed this work.

13. During cleaning, all surfaces of apparatuses, tanks and pipelines covered with deposits of resins, polymers, iron sulfide and unidentified deposits must be moistened. The deposits must be collected and, after cleaning, removed from the room to a fireproof place.

14. During the performance of repair work in gas hazardous places, the simultaneous performance of other work, as well as the presence of workers not involved in these works, is prohibited.

Repair work must be stopped if:

– to the equipment being repaired, at least part of the operating equipment is connected;

– a discrepancy between the actual state of preparation and performance of work with safety requirements was revealed;

– there was a threat to the life and health of workers;

- the volume and nature of work has changed so that the shutdown schemes or the conditions for performing these works are changed;

– a signal about an accident has been given;

- suddenly there was a smell or a visible amount of hazardous products of production.

15. The procedure for preparing for inspection or repair of units, apparatus and communications containing harmful or explosive substances in the operating mode should be set out in the work plan.

16. All work on shutting down existing apparatuses, vessels and pipelines, as well as cleaning them from the remnants of technological products, steaming and other preparatory activities must be carried out by operating personnel. The performance of these works by the personnel of contractors is prohibited.

Until recently, this problem was solved in several ways, depending on the specifics of production. For this, strong chemical solvents, sandblasting and hydrotreating were used.

Disadvantages of chemical treatment technologies

toxicity of chemicals;
the toxicity of sand containing silicon dioxide and has long been banned for use in most developed countries;
the need to collect and dispose of consumables after completion of work; the need to suspend production for the period of technological maintenance (cleaning);
the need to protect certain parts of the equipment from the ingress of aggressive substances, sand or water;
large expenditure of time and labor resources;
high cost of work performed.

Industrial equipment cleaning with soda blasting technology

The advanced technology of soda blasting solves the above problems with ease. It not only saves money and time for clients, but also provides an order of magnitude higher quality of work.

Soft blasting technology has become an ideal way to perform such types of work:

Removing the old layer of paint and dirt

Since the density of the abrasive is low, it removes only those substances that have the same or lower density, without damaging the surface being cleaned.

Blasting industrial equipment

Soft blasting has a number of advantages when cleaning equipment:

no need to use harmful chemicals;
cleaning is easy to carry out;
the remains of abrasive granules are easily dissolved in water, which makes it possible to simply wash them off without additional cleaning and disposal of materials after cleaning;
no additional preparatory work is required, for example, protection of equipment from abrasive ingress into mechanisms;
you can clean chrome, nickel, galvanized and aluminum surfaces without fear of damaging them;
allows cleaning engines and other parts of mechanisms without dismantling and disassembly;
consumable residues do not accumulate inside the mechanisms, as they are easily removed with water;
in case of unwanted dust formation, the abrasive can be used together with water;
significantly reduces the time spent on cleaning and its cost.

Armex blasting technology

Due to its versatility and simplicity, the technology can be applied to any modern enterprise, ensuring the excellent condition of the equipment, saving time and money.

Our video

Where is the washing of technological equipment used?

Cleaning of equipment with ultra-high pressure is carried out in the range from 150 bar to 1500 bar (power from 3 to 55 kW).

At the enterprises of the energy industry and mechanical engineering. Boilers, machine tools, equipment, tools are cleaned without surface damage;
In chemical production (factories for the production of paint, plastic, rubber and other products). It is used to clean equipment from chemical synthesis products, oil pollution and other deposits;

At the enterprises and organizations of the food industry. It is used to clean tanks from scale, soot, rust;
Metallurgical and oil refining industries. Ultra-high pressure flushing technology is used to flush tanks and other tanks from oil products: oil, fuel oil, etc.

Benefits of cleaning equipment with us

Ecological cleanliness of the process. All work is carried out using environmentally friendly means.
Complete safety for others. You do not have to stop production for a long time.
The absence of a large amount of waste and, as a result, problems with their disposal.
Efficiency combined with an acceptable cost of work.

Many years of experience in cleaning boilers, heat exchangers, pipelines, containers and reservoirs of any type, qualified personnel and reasonable prices will allow you to make the right choice. Call and order professional equipment cleaning. Our experts will answer all your questions and select the best solution for any problem.