The present disclosure provides a fracturing fluid mixing equipment including a clear water supply system, at least two mixing systems, at least one powder tank, at least two powder conveying systems, a mixing tank, a feeding system and a power system. The clear water supply system has two parallel water supply paths which are connected to the mixing system and the mixing tank respectively. The powder conveying system is connected to the powder tank. There are same number of powder conveying systems and mixing systems which are connected in one-to-one correspondence. The mixing system is connected into the mixing tank. The feeding system adds powder by pneumatic conveying. The power system provides driving force by pure electric power and/or electro-hydraulic power. According to present disclosure, the power system can reduce fuel consumption and exhaust emissions. The feeding system can be compatible with various adding conditions of powders in different packaging, which can reduce the possibility of dust pollution, thereby reducing labor costs and occupational injuries and being more efficient and environmentally friendly.

A system for mixing acid and water can include a tank for holding acid, an acid pump for pumping acid out of the tank, an acid flow meter, an acid control valve, a water pump for pumping water, a water flow meter, a water control valve, a flush valve to selectively flush the system with water, and a controller to monitor the flow meters and control the pumps and the valves. The acid control valve and/or the water control valve can be an electronically controlled valve. The flush valve can be an electronically controlled valve to selectively permit water to flow from downstream of the water pump to upstream of the acid pump. The acid control valve, the water control valve, the flush valve, or any combination thereof can be throttled by the controller to control flow therethrough.

A dual container concrete mixing transport truck chute washout system with (a) a chute attachable funnel container having an open mouth with an upper rim, an attachment for detachably attaching the funnel container below an exit end of a concrete truck concrete chute, and a material outlet connector to drain liquid and debris from the funnel container, and (b) a truck mountable holding container having an upper portion that is adapted to store the funnel container when the funnel container is not affixed to the chute, a lower portion for collection of fluid and solid materials, a seat located between the upper space and the lower portion, a material inlet connector, and a fluid drain valve for draining fluid from the holding container, wherein the upper rim of the funnel container is adapted to sit on the seat of the holding container to act as a lid.

A sink is configured to attach to a bottom surface of a flowline that is configured to flow a mixture of at least two immiscible fluids. One of the immiscible fluids is water. The water is more dense than the other of the at least two immiscible fluids. An outlet formed at a bottom portion of the sink. A valve system is connected to the opening. The valve system is configured to open the outlet in response to the water occupying at least a portion of the sink.

Bleach dilution and delivery vehicles are enabled. For example, a method can comprise: transporting, using a bleach dilution and delivery vehicle, sodium hypochlorite from a first location to a second location, mixing, using the bleach dilution and delivery vehicle, water from the second location and sodium hypochlorite from the bleach dilution and delivery vehicle to a defined strength, resulting in a diluted mix, and dispensing, using the bleach dilution and delivery vehicle, the diluted mix to the second location.

In accordance with one embodiment, a method is provided that includes providing a liquid nitrogen storage system configured to cool a supply of liquid nitrogen to a temperature below the vapor point of liquid nitrogen; coupling a piping system with the liquid nitrogen storage system to convey a portion of the supply of liquid nitrogen from the liquid nitrogen storage system; coupling the piping system with a liquid nitrogen control valve configured to control a flow of liquid nitrogen to at least one liquid nitrogen dispensing head; disposing the at least one liquid nitrogen dispensing head above a conveyance device operable to convey an aggregate stream of a concrete batching plant during use; and disposing the at least one liquid nitrogen dispensing head in a position to dispense an output flow of liquid nitrogen onto the aggregate stream of the concrete batching plant during use.

A blender power unit (BPU) for use in fracturing jobs. The BPU comprises a transformer having an input and an output and configured to receive electrical power via the input at a first voltage to output electrical power via the output at a second voltage; a motor power bus coupled to the output of the transformer; a motor starter bus; at least one motor soft starter having an input coupled to the motor power bus and having an coupled to the motor starter bus; a plurality of electric power relays coupled to the motor power bus and configured to supply electric power from the motor power bus to a load when in a closed state; and a plurality of start electric power relays coupled to the motor starter bus and configured to supply electric power from the motor starter bus to a load when in a closed state.

A closed concentrated dry chemical dispersion system including a closed ingredient container having a volume of dry ingredient therein. The system provides a fluid container and a mixing chamber in which the dry ingredient and fluid can be mixed to form a formulation for delivery to a device such as agrochemical dispensing equipment. The system minimizes worker exposure to the chemicals and enables lower packaging and transportation costs.

A fully electric-drive sand-mixing apparatus comprises a foundation; and a suction pump, a suction pump driving electric motor, a suction manifold, a mixing stirrer, a mixing stirrer driving electric motor, a dry-ingredient-adding device, a dry-ingredient-adding device driving electric motor, a liquid-adding device, a liquid-adding device driving electric motor, a sand-conveying device, a sand-conveying device driving electric motor, a discharge pump, a discharge pump driving electric motor, a discharge manifold, a frequency converter placement room and an operation room, which are fixedly connected to the foundation. The suction pump driving electric motor, the mixing stirrer driving electric motor, the dry-ingredient-adding device driving electric motor, the liquid-adding device driving electric motor, the sand-conveying device driving electric motor and the discharge pump driving electric motor are fixedly and electrically connected to the suction pump, the mixing stirrer, the dry-ingredient-adding device, the liquid-adding device, the sand-conveying device and the discharge pump, respectively.

A system for mixing acid and water can include a tank for holding acid, an acid pump for pumping acid out of the tank, an acid flow meter, an acid control valve, a water pump for pumping water, a water flow meter, a water control valve, a flush valve to selectively flush the system with water, and a controller to monitor the flow meters and control the pumps and the valves. The acid control valve and/or the water control valve can be an electronically controlled valve. The flush valve can be an electronically controlled valve to selectively permit water to flow from downstream of the water pump to upstream of the acid pump. The acid control valve, the water control valve, the flush valve, or any combination thereof can be throttled by the controller to control flow therethrough.